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$NPC [NPC Coin] Token

About $NPC

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[CoinMarketCap] alert: Smart contract of the following asset can be modified by the contract creator (for example: disable selling, change fees, mint new tokens, or transfer tokens). Please exercise caution before taking any action and DYOR.
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NPC’s mission is to utilize a marketing strategy never seen before in the Web3 space to ultimately attract a community of like-minded individuals who want to break free from the traditional paradigm of becoming an NPC in the modern day system.

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Laser Scorebeta Last Audit: 26 August 2022

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Token is either risky or in presale. For presale 30+ is a fine score.

NPCCoin.swapAndLiquify(uint256) (#982-1007) sends eth to arbitrary user
Dangerous calls:
- marketingWallet.transfer(address(this).balance) (#1004)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in NPCCoin._transfer(address,address,uint256) (#953-980):
External calls:
- swapAndLiquify(contractTokenBalance) (#975)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#975)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
State variables written after the call(s):
- _tokenTransfer(from,to,amount) (#979)
- _liquidityFee = _previousLiquidityFee (#940)
- _liquidityFee = 0 (#933)
- _tokenTransfer(from,to,amount) (#979)
- _marketingFee = _previousMarketingFee (#942)
- _marketingFee = 0 (#934)
- _tokenTransfer(from,to,amount) (#979)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#907)
- _rOwned[deadAddress] = _rOwned[deadAddress].add(rBurn) (#1091)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1110)
- _rOwned[address(this)] = _rOwned[address(this)].add(rMarketing) (#1103)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1121)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#853)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1076)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1112)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1122)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#855)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1077)
- _tokenTransfer(from,to,amount) (#979)
- _rTotal = _rTotal.sub(rFee) (#862)
- _tokenTransfer(from,to,amount) (#979)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#909)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#852)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#1120)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#1111)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#854)
Apply the check-effects-interactions pattern.

Additional information: link


Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains


Contract ownership is not renounced (belongs to a wallet)


Combination 1: Reentrancy vulnerabilities + Functions that send Ether to arbitraty destination. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

NPCCoin.setMarketingWallet(address).newWallet (#1140) lacks a zero-check on :
- marketingWallet = newWallet (#1141)
Check that the address is not zero.

Additional information: link

NPCCoin.includeInReward(address) (#837-848) has costly operations inside a loop:
- _excluded.pop() (#844)
Use a local variable to hold the loop computation result.

Additional information: link

NPCCoin._rTotal (#682) is set pre-construction with a non-constant function or state variable:
- (MAX - (MAX % _tTotal))
NPCCoin._previousTaxFee (#690) is set pre-construction with a non-constant function or state variable:
- _taxFee
NPCCoin._previousLiquidityFee (#693) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
NPCCoin._previousBurnFee (#696) is set pre-construction with a non-constant function or state variable:
- _burnFee
NPCCoin._previousMarketingFee (#700) is set pre-construction with a non-constant function or state variable:
- _marketingFee
Remove any initialization of state variables via non-constant state variables or function calls. If variables must be set upon contract deployment, locate initialization in the constructor instead.

Additional information: link

Pragma version0.8.16 (#3) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.16 is not recommended for deployment
Deploy with any of the following Solidity versions: 0.5.16 - 0.5.17, 0.6.11 - 0.6.12, 0.7.5 - 0.7.6 Use a simple pragma version that allows any of these versions. Consider using the latest version of Solidity for testing.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#533) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#534)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._transferStandard(address,address,uint256).rTransferAmount (#1073) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#883) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin._transferToExcluded(address,address,uint256).rTransferAmount (#1109) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin._getValues(uint256).rTransferAmount (#868) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#851)
Variable NPCCoin.takeBurn(address,uint256,uint256,uint256).rTransferAmount (#1084) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#851) is too similar to NPCCoin._transferToExcluded(address,address,uint256).tTransferAmount (#1109)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin.takeMarketing(address,uint256,uint256,uint256).tTransferAmount (#1096)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin._getValues(uint256).tTransferAmount (#867)
Variable NPCCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1119) is too similar to NPCCoin.takeBurn(address,uint256,uint256,uint256).tTransferAmount (#1084)
Variable NPCCoin.reflectionFromToken(uint256,bool).rTransferAmount (#817) is too similar to NPCCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#1119)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin._transferStandard(address,address,uint256).tTransferAmount (#1073)
Variable NPCCoin.takeMarketing(address,uint256,uint256,uint256).rTransferAmount (#1096) is too similar to NPCCoin._getTValues(uint256).tTransferAmount (#875)
Prevent variables from having similar names.

Additional information: link

NPCCoin.slitherConstructorVariables() (#666-1170) uses literals with too many digits:
- _tTotal = 1000000000 * (10 ** 18) (#681)
NPCCoin.slitherConstructorVariables() (#666-1170) uses literals with too many digits:
- deadAddress = 0x000000000000000000000000000000000000dEaD (#697)
NPCCoin.slitherConstructorVariables() (#666-1170) uses literals with too many digits:
- numTokensSellToAddToLiquidity = 500000 * 10 ** 18 (#706)
NPCCoin.slitherConstructorVariables() (#666-1170) uses literals with too many digits:
- _maxTxAmount = 1000000000 * 10 ** 18 (#707)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

NPCCoin.takeBurn(address,uint256,uint256,uint256) (#1084-1094) performs a multiplication on the result of a division:
-tBurn = tAmount.div(100).mul(_burnFee) (#1087)
NPCCoin.takeMarketing(address,uint256,uint256,uint256) (#1096-1106) performs a multiplication on the result of a division:
-tMarketing = tAmount.div(100).mul(_marketingFee) (#1099)
Consider ordering multiplication before division.

Additional information: link

NPCCoin.allowance(address,address).owner (#769) shadows:
- Ownable.owner() (#112-114) (function)
NPCCoin._approve(address,address,uint256).owner (#945) shadows:
- Ownable.owner() (#112-114) (function)
Rename the local variables that shadow another component.

Additional information: link

NPCCoin.setFeePercent(uint256,uint256,uint256,uint256) (#1144-1150) should emit an event for:
- _taxFee = taxFee (#1146)
- _liquidityFee = liquidityFee (#1147)
- _marketingFee = marketingFee (#1148)
- _burnFee = burnFee (#1149)
NPCCoin.setNumTokensSellToAddToLiquidity(uint256) (#1152-1154) should emit an event for:
- numTokensSellToAddToLiquidity = newAmount (#1153)
NPCCoin.setMaxTxAmount(uint256) (#1156-1159) should emit an event for:
- _maxTxAmount = maxTxAmount (#1157)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in NPCCoin._transfer(address,address,uint256) (#953-980):
External calls:
- swapAndLiquify(contractTokenBalance) (#975)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#975)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
State variables written after the call(s):
- _tokenTransfer(from,to,amount) (#979)
- _burnFee = _previousBurnFee (#941)
- _burnFee = 0 (#935)
- _tokenTransfer(from,to,amount) (#979)
- _previousBurnFee = _burnFee (#929)
- _tokenTransfer(from,to,amount) (#979)
- _previousLiquidityFee = _liquidityFee (#928)
- _tokenTransfer(from,to,amount) (#979)
- _previousMarketingFee = _marketingFee (#930)
- _tokenTransfer(from,to,amount) (#979)
- _previousTaxFee = _taxFee (#927)
- _tokenTransfer(from,to,amount) (#979)
- _tFeeTotal = _tFeeTotal.add(tFee) (#863)
- _tokenTransfer(from,to,amount) (#979)
- _taxFee = _previousTaxFee (#939)
- _taxFee = 0 (#932)
Reentrancy in NPCCoin.constructor() (#723-741):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#729-730)
State variables written after the call(s):
- _isExcludedFromFee[owner()] = true (#736)
- _isExcludedFromFee[marketingWallet] = true (#737)
- _isExcludedFromFee[address(this)] = true (#738)
- uniswapV2Router = _uniswapV2Router (#733)
Reentrancy in NPCCoin.swapAndLiquify(uint256) (#982-1007):
External calls:
- swapTokensForEth(half) (#995)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1001)
- _allowances[owner][spender] = amount (#949)
Reentrancy in NPCCoin.swapAndLiquify(uint256) (#982-1007):
External calls:
- swapTokensForEth(half) (#995)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- swapTokensForEth(contractTokenBalance.sub(liquidityTokens)) (#1003)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
State variables written after the call(s):
- swapTokensForEth(contractTokenBalance.sub(liquidityTokens)) (#1003)
- _allowances[owner][spender] = amount (#949)
Reentrancy in NPCCoin.transferFrom(address,address,uint256) (#778-782):
External calls:
- _transfer(sender,recipient,amount) (#779)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- _transfer(sender,recipient,amount) (#779)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#780)
- _allowances[owner][spender] = amount (#949)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in NPCCoin._transfer(address,address,uint256) (#953-980):
External calls:
- swapAndLiquify(contractTokenBalance) (#975)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#975)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
Event emitted after the call(s):
- Transfer(sender,deadAddress,tBurn) (#1092)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,address(this),tMarketing) (#1104)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#1115)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#1125)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#1080)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#858)
- _tokenTransfer(from,to,amount) (#979)
Reentrancy in NPCCoin.constructor() (#723-741):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#729-730)
Event emitted after the call(s):
- Transfer(address(0),owner(),_tTotal) (#740)
Reentrancy in NPCCoin.swapAndLiquify(uint256) (#982-1007):
External calls:
- swapTokensForEth(half) (#995)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#950)
- addLiquidity(otherHalf,newBalance) (#1001)
Reentrancy in NPCCoin.swapAndLiquify(uint256) (#982-1007):
External calls:
- swapTokensForEth(half) (#995)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- swapTokensForEth(contractTokenBalance.sub(liquidityTokens)) (#1003)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#950)
- swapTokensForEth(contractTokenBalance.sub(liquidityTokens)) (#1003)
Reentrancy in NPCCoin.swapAndLiquify(uint256) (#982-1007):
External calls:
- swapTokensForEth(half) (#995)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- swapTokensForEth(contractTokenBalance.sub(liquidityTokens)) (#1003)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
Event emitted after the call(s):
- SwapAndLiquify(half,newBalance,otherHalf) (#1006)
Reentrancy in NPCCoin.transferFrom(address,address,uint256) (#778-782):
External calls:
- _transfer(sender,recipient,amount) (#779)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1018-1024)
External calls sending eth:
- _transfer(sender,recipient,amount) (#779)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#950)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#780)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (#159-164) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp > _lockTime,Contract is locked until 7 days) (#161)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#337-346) uses assembly
- INLINE ASM (#344)
Address._functionCallWithValue(address,bytes,uint256,string) (#430-451) uses assembly
- INLINE ASM (#443-446)
Do not use evm assembly.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#430-451) is never used and should be removed
Address.functionCall(address,bytes) (#390-392) is never used and should be removed
Address.functionCall(address,bytes,string) (#400-402) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#415-417) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#425-428) is never used and should be removed
Address.isContract(address) (#337-346) is never used and should be removed
Address.sendValue(address,uint256) (#364-370) is never used and should be removed
Context._msgData() (#82-85) is never used and should be removed
SafeMath.mod(uint256,uint256) (#294-296) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#310-313) is never used and should be removed
Remove unused functions.

Additional information: link

Low level call in Address.sendValue(address,uint256) (#364-370):
- (success) = recipient.call{value: amount}() (#368)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#430-451):
- (success,returndata) = target.call{value: weiValue}(data) (#434)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Reentrancy in NPCCoin._transfer(address,address,uint256) (#953-980):
External calls:
- swapAndLiquify(contractTokenBalance) (#975)
- marketingWallet.transfer(address(this).balance) (#1004)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#975)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
State variables written after the call(s):
- _tokenTransfer(from,to,amount) (#979)
- _burnFee = _previousBurnFee (#941)
- _burnFee = 0 (#935)
- _tokenTransfer(from,to,amount) (#979)
- _liquidityFee = _previousLiquidityFee (#940)
- _liquidityFee = 0 (#933)
- _tokenTransfer(from,to,amount) (#979)
- _marketingFee = _previousMarketingFee (#942)
- _marketingFee = 0 (#934)
- _tokenTransfer(from,to,amount) (#979)
- _previousBurnFee = _burnFee (#929)
- _tokenTransfer(from,to,amount) (#979)
- _previousLiquidityFee = _liquidityFee (#928)
- _tokenTransfer(from,to,amount) (#979)
- _previousMarketingFee = _marketingFee (#930)
- _tokenTransfer(from,to,amount) (#979)
- _previousTaxFee = _taxFee (#927)
- _tokenTransfer(from,to,amount) (#979)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#907)
- _rOwned[deadAddress] = _rOwned[deadAddress].add(rBurn) (#1091)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1110)
- _rOwned[address(this)] = _rOwned[address(this)].add(rMarketing) (#1103)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1121)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#853)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1076)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1112)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1122)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#855)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1077)
- _tokenTransfer(from,to,amount) (#979)
- _rTotal = _rTotal.sub(rFee) (#862)
- _tokenTransfer(from,to,amount) (#979)
- _tFeeTotal = _tFeeTotal.add(tFee) (#863)
- _tokenTransfer(from,to,amount) (#979)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#909)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#852)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#1120)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#1111)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#854)
- _tokenTransfer(from,to,amount) (#979)
- _taxFee = _previousTaxFee (#939)
- _taxFee = 0 (#932)
Event emitted after the call(s):
- Transfer(sender,address(this),tMarketing) (#1104)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,deadAddress,tBurn) (#1092)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#1115)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#1125)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#1080)
- _tokenTransfer(from,to,amount) (#979)
- Transfer(sender,recipient,tTransferAmount) (#858)
- _tokenTransfer(from,to,amount) (#979)
Reentrancy in NPCCoin.swapAndLiquify(uint256) (#982-1007):
External calls:
- marketingWallet.transfer(address(this).balance) (#1004)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1001)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
Event emitted after the call(s):
- SwapAndLiquify(half,newBalance,otherHalf) (#1006)
Reentrancy in NPCCoin.transferFrom(address,address,uint256) (#778-782):
External calls:
- _transfer(sender,recipient,amount) (#779)
- marketingWallet.transfer(address(this).balance) (#1004)
External calls sending eth:
- _transfer(sender,recipient,amount) (#779)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
- marketingWallet.transfer(address(this).balance) (#1004)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#780)
- _allowances[owner][spender] = amount (#949)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#950)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#780)
Apply the check-effects-interactions pattern.

Additional information: link

NPCCoin._decimals (#687) should be constant
NPCCoin._name (#685) should be constant
NPCCoin._symbol (#686) should be constant
NPCCoin._tTotal (#681) should be constant
NPCCoin.deadAddress (#697) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#131-134)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#140-144)
geUnlockTime() should be declared external:
- Ownable.geUnlockTime() (#146-148)
lock(uint256) should be declared external:
- Ownable.lock(uint256) (#151-156)
unlock() should be declared external:
- Ownable.unlock() (#159-164)
name() should be declared external:
- NPCCoin.name() (#743-745)
symbol() should be declared external:
- NPCCoin.symbol() (#747-749)
decimals() should be declared external:
- NPCCoin.decimals() (#751-753)
transfer(address,uint256) should be declared external:
- NPCCoin.transfer(address,uint256) (#764-767)
allowance(address,address) should be declared external:
- NPCCoin.allowance(address,address) (#769-771)
approve(address,uint256) should be declared external:
- NPCCoin.approve(address,uint256) (#773-776)
transferFrom(address,address,uint256) should be declared external:
- NPCCoin.transferFrom(address,address,uint256) (#778-782)
increaseAllowance(address,uint256) should be declared external:
- NPCCoin.increaseAllowance(address,uint256) (#784-787)
decreaseAllowance(address,uint256) should be declared external:
- NPCCoin.decreaseAllowance(address,uint256) (#789-792)
isExcludedFromReward(address) should be declared external:
- NPCCoin.isExcludedFromReward(address) (#794-796)
totalFees() should be declared external:
- NPCCoin.totalFees() (#798-800)
deliver(uint256) should be declared external:
- NPCCoin.deliver(uint256) (#802-809)
reflectionFromToken(uint256,bool) should be declared external:
- NPCCoin.reflectionFromToken(uint256,bool) (#811-820)
excludeFromReward(address) should be declared external:
- NPCCoin.excludeFromReward(address) (#828-835)
isExcludedFromFee(address) should be declared external:
- NPCCoin.isExcludedFromFee(address) (#1128-1130)
includeInFee(address) should be declared external:
- NPCCoin.includeInFee(address) (#1132-1134)
excludeFromFee(address) should be declared external:
- NPCCoin.excludeFromFee(address) (#1136-1138)
setSwapAndLiquifyEnabled(bool) should be declared external:
- NPCCoin.setSwapAndLiquifyEnabled(bool) (#1161-1164)
Use the external attribute for functions never called from the contract.

Additional information: link

NPCCoin.addLiquidity(uint256,uint256) (#1027-1040) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,deadAddress,block.timestamp) (#1032-1039)
Ensure that all the return values of the function calls are used.

Additional information: link

Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#490) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#491) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#507) is not in mixedCase
Function IUniswapV2Router01.WETH() (#528) is not in mixedCase
Parameter NPCCoin.calculateLiquidityFee(uint256)._amount (#912) is not in mixedCase
Parameter NPCCoin.calculateTaxFee(uint256)._amount (#918) is not in mixedCase
Parameter NPCCoin.setSwapAndLiquifyEnabled(bool)._enabled (#1161) is not in mixedCase
Variable NPCCoin._taxFee (#689) is not in mixedCase
Variable NPCCoin._liquidityFee (#692) is not in mixedCase
Variable NPCCoin._burnFee (#695) is not in mixedCase
Variable NPCCoin._marketingFee (#699) is not in mixedCase
Variable NPCCoin._maxTxAmount (#707) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#83)" inContext (#77-86)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Contract ticker ($NPC) contains non-alphanumeric characters.
Not a direct threat, but may indicate unreliable intentions of developer. Non-alphanumeric chars (,.;!#*&") are extremely rare among low risk tokens.

Holders:

Contract has 10% buy tax and 9% sell tax.
Taxes are low but contract ownership is not renounced. Token has a high risk of becoming a honeypot.


Token is deployed only at one blockchain


Unable to find Blog account (Reddit or Medium)


Unable to find Discord account


Unable to find Twitter link on the website


Token is not listed at Mobula.Finance

Additional information: link


Unable to find token on CoinHunt

Additional information: link


Young tokens have high risks of scam / price dump / death


Young tokens have high risks of scam / price dump / death


Young tokens have high risks of scam / price dump / death


Young tokens have high risks of scam / price dump / death


Young tokens have high risks of scam / price dump / death


Token has no active CoinGecko listing / rank


Token has no active CoinMarketCap listing / rank

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