SRPAY [SecurePay] Token

SecurePay.claimStuckTokens(address) (#544-553) sends eth to arbitrary user
Dangerous calls:
- address(msg.sender).transfer(address(this).balance) (#547)
SecurePay.sendBNB(address,uint256) (#559-564) sends eth to arbitrary user
Dangerous calls:
- (success) = recipient.call{value: amount}() (#562)
SecurePay.swapAndLiquify(uint256) (#814-843) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in SecurePay._transfer(address,address,uint256) (#707-811):
External calls:
- swapAndLiquify(liquidityTokens) (#748)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(half,0,path,address(this),block.timestamp) (#824-829)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(contractTokenBalance,0,path,address(this),block.timestamp) (#761-766)
- sendBNB(address(marketingWallet),marketingBNB) (#772)
- (success) = recipient.call{value: amount}() (#562)
- sendBNB(address(developmentWallet),developmentBNB) (#779)
- (success) = recipient.call{value: amount}() (#562)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#748)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
- sendBNB(address(marketingWallet),marketingBNB) (#772)
- (success) = recipient.call{value: amount}() (#562)
- sendBNB(address(developmentWallet),developmentBNB) (#779)
- (success) = recipient.call{value: amount}() (#562)
State variables written after the call(s):
- super._transfer(from,address(this),fees) (#807)
- _balances[sender] = senderBalance - amount (#177)
- _balances[recipient] += amount (#179)
- super._transfer(from,to,amount) (#810)
- _balances[sender] = senderBalance - amount (#177)
- _balances[recipient] += amount (#179)
- swapping = false (#785)
Apply the check-effects-interactions pattern.

Additional information: link

SecurePay.claimStuckTokens(address) (#544-553) ignores return value by ERC20token.transfer(msg.sender,balance) (#552)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

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.

Combination 2: Unchecked transfer + 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.

Combination 3: Reentrancy vulnerabilities + Unchecked transfer vulnerability. Usual for scams. May be justified by some complex mechanics (e.g. rebase, reflections). DYOR & manual audit are advised.

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

Contract ownership is not renounced (belongs to a wallet)

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#311) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#312)
Prevent variables from having similar names.

Additional information: link

SecurePay.setSwapTokensAtAmount(uint256) (#702-705) uses literals with too many digits:
- require(bool,string)(newAmount > totalSupply() / 100000,SwapTokensAtAmount must be greater than 0.001% of total supply) (#703)
SecurePay.slitherConstructorVariables() (#439-845) uses literals with too many digits:
- DEAD = 0x000000000000000000000000000000000000dEaD (#462)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

SecurePay.DEAD (#462) should be constant
SecurePay.swapEnabled (#467) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

SecurePay._transfer(address,address,uint256).liquidityTokens (#745) is a local variable never initialized
Initialize all the variables. If a variable is meant to be initialized to zero, explicitly set it to zero to improve code readability.

Additional information: link

SecurePay.swapAndLiquify(uint256) (#814-843) ignores return value by uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
Ensure that all the return values of the function calls are used.

Additional information: link

SecurePay._setOperator(address) (#588-591) should emit an event for:
- operator = _operator (#590)
Emit an event for critical parameter changes.

Additional information: link

SecurePay.setSwapTokensAtAmount(uint256) (#702-705) should emit an event for:
- swapTokensAtAmount = newAmount (#704)
Emit an event for critical parameter changes.

Additional information: link

SecurePay.constructor(address,address)._uniswapV2Pair (#505-506) lacks a zero-check on :
- uniswapV2Pair = _uniswapV2Pair (#509)
SecurePay.updateUniswapV2Router(address)._uniswapV2Pair (#570-571) lacks a zero-check on :
- uniswapV2Pair = _uniswapV2Pair (#572)
Check that the address is not zero.

Additional information: link

Reentrancy in SecurePay.constructor(address,address) (#493-533):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#505-506)
State variables written after the call(s):
- _approve(address(this),address(uniswapV2Router),type()(uint256).max) (#511)
- _allowances[owner][spender] = amount (#223)
- _isExcludedFromFees[newOwner] = true (#514)
- _isExcludedFromFees[owner()] = true (#515)
- _isExcludedFromFees[DEAD] = true (#516)
- _isExcludedFromFees[address(this)] = true (#517)
- _isExcludedMaxTxn[newOwner] = true (#525)
- _isExcludedMaxTxn[owner()] = true (#526)
- _isExcludedMaxTxn[DEAD] = true (#527)
- _isExcludedMaxTxn[address(this)] = true (#528)
- _isExcludedMaxTxn[router_] = true (#529)
- _isExcludedMaxWallet[newOwner] = true (#519)
- _isExcludedMaxWallet[owner()] = true (#520)
- _isExcludedMaxWallet[DEAD] = true (#521)
- _isExcludedMaxWallet[address(this)] = true (#522)
- _isExcludedMaxWallet[router_] = true (#523)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#512)
- automatedMarketMakerPairs[pair] = value (#583)
- swapTokensAtAmount = totalSupply() / 5000 (#532)
- swapWithLimit = false (#531)
- uniswapV2Pair = _uniswapV2Pair (#509)
- uniswapV2Router = _uniswapV2Router (#508)
Reentrancy in SecurePay.updateUniswapV2Router(address) (#566-573):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#570-571)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (#572)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in SecurePay._transfer(address,address,uint256) (#707-811):
External calls:
- swapAndLiquify(liquidityTokens) (#748)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(half,0,path,address(this),block.timestamp) (#824-829)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(contractTokenBalance,0,path,address(this),block.timestamp) (#761-766)
- sendBNB(address(marketingWallet),marketingBNB) (#772)
- (success) = recipient.call{value: amount}() (#562)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#748)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
- sendBNB(address(marketingWallet),marketingBNB) (#772)
- (success) = recipient.call{value: amount}() (#562)
Event emitted after the call(s):
- ProcessMarketingTax(marketingBNB) (#774)
Reentrancy in SecurePay._transfer(address,address,uint256) (#707-811):
External calls:
- swapAndLiquify(liquidityTokens) (#748)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(half,0,path,address(this),block.timestamp) (#824-829)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(contractTokenBalance,0,path,address(this),block.timestamp) (#761-766)
- sendBNB(address(marketingWallet),marketingBNB) (#772)
- (success) = recipient.call{value: amount}() (#562)
- sendBNB(address(developmentWallet),developmentBNB) (#779)
- (success) = recipient.call{value: amount}() (#562)
External calls sending eth:
- swapAndLiquify(liquidityTokens) (#748)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
- sendBNB(address(marketingWallet),marketingBNB) (#772)
- (success) = recipient.call{value: amount}() (#562)
- sendBNB(address(developmentWallet),developmentBNB) (#779)
- (success) = recipient.call{value: amount}() (#562)
Event emitted after the call(s):
- ProcessDevelopmentTax(developmentBNB) (#781)
- Transfer(sender,recipient,amount) (#181)
- super._transfer(from,to,amount) (#810)
- Transfer(sender,recipient,amount) (#181)
- super._transfer(from,address(this),fees) (#807)
Reentrancy in SecurePay.constructor(address,address) (#493-533):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#505-506)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#224)
- _approve(address(this),address(uniswapV2Router),type()(uint256).max) (#511)
- SetAutomatedMarketMakerPair(pair,value) (#585)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#512)
Reentrancy in SecurePay.swapAndLiquify(uint256) (#814-843):
External calls:
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(half,0,path,address(this),block.timestamp) (#824-829)
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
External calls sending eth:
- uniswapV2Router.addLiquidityETH{value: newBalance}(address(this),otherHalf,0,0,DEAD,block.timestamp) (#833-840)
Event emitted after the call(s):
- SwapAndLiquify(half,newBalance,otherHalf) (#842)
Apply the check-effects-interactions pattern.

Additional information: link

Context._msgData() (#44-47) is never used and should be removed
ERC20._burn(address,uint256) (#198-213) is never used and should be removed
SecurePay.isContract(address) (#555-557) is never used and should be removed
Remove unused functions.

Additional information: link

SecurePay._totalFeesOnBuy (#449) is set pre-construction with a non-constant function or state variable:
- lpTaxOnBuy + marketingTaxOnBuy + developmentTaxOnBuy
SecurePay._totalFeesOnSell (#450) is set pre-construction with a non-constant function or state variable:
- lpTaxOnSell + marketingTaxOnSell + developmentTaxOnSell
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 version0.8.15 (#15) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.15 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

Low level call in SecurePay.sendBNB(address,uint256) (#559-564):
- (success) = recipient.call{value: amount}() (#562)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#268) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#269) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#286) is not in mixedCase
Function IUniswapV2Router01.WETH() (#306) is not in mixedCase
Function SecurePay._setOperator(address) (#588-591) is not in mixedCase
Parameter SecurePay._setOperator(address)._operator (#588) is not in mixedCase
Parameter SecurePay.updateBuyFees(uint256,uint256,uint256)._lpTaxOnBuy (#635) is not in mixedCase
Parameter SecurePay.updateBuyFees(uint256,uint256,uint256)._marketingTaxOnBuy (#635) is not in mixedCase
Parameter SecurePay.updateBuyFees(uint256,uint256,uint256)._developmentTaxOnBuy (#635) is not in mixedCase
Parameter SecurePay.updateSellFees(uint256,uint256,uint256)._lpTaxOnSell (#647) is not in mixedCase
Parameter SecurePay.updateSellFees(uint256,uint256,uint256)._marketingTaxOnSell (#647) is not in mixedCase
Parameter SecurePay.updateSellFees(uint256,uint256,uint256)._developmentTaxOnSell (#647) is not in mixedCase
Parameter SecurePay.changeMarketingWallet(address)._marketingWallet (#688) is not in mixedCase
Parameter SecurePay.changeDevelopmentWallet(address)._developmentWallet (#695) is not in mixedCase
Variable SecurePay.DEAD (#462) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#45)" inContext (#39-48)
Remove redundant statements if they congest code but offer no value.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#70-73)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#75-79)
name() should be declared external:
- ERC20.name() (#97-99)
symbol() should be declared external:
- ERC20.symbol() (#101-103)
decimals() should be declared external:
- ERC20.decimals() (#105-107)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#117-120)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#122-124)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#126-129)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#131-147)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#149-152)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#154-162)
setAutomatedMarketMakerPair(address,bool) should be declared external:
- SecurePay.setAutomatedMarketMakerPair(address,bool) (#575-579)
excludeFromLimits(address,bool) should be declared external:
- SecurePay.excludeFromLimits(address,bool) (#601-607)
isExcludedFromFees(address) should be declared external:
- SecurePay.isExcludedFromFees(address) (#609-611)
isExcludedMaxTxn(address) should be declared external:
- SecurePay.isExcludedMaxTxn(address) (#613-615)
isExcludedMaxWallet(address) should be declared external:
- SecurePay.isExcludedMaxWallet(address) (#617-619)
Use the external attribute for functions never called from the contract.

Additional information: link

Token seems to be untradeable: there is no PancakeSwap trading pair and no trading volumes. Ignore for presale.

Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.

BscScan page for the token does not contain additional info: website, socials, description, etc.

Additional information: link

Unable to verify that token and website are owned by the same team (no listings + unable to find contract on website)

Unable to verify token contract address on the website

Unable to find audit link on the website

Unable to find Telegram link on the website

Unable to find token on CoinGecko

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Unable to find token on CoinMarketCap

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Token is not listed at Mobula.Finance

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Unable to find token on CoinHunt

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Token is relatively young, but twitter if very old (probably it's fake).