Doge2 [Dogecoin 2.0] Token

Unable to find manual contract audit (e.g. Certik, PeckShield, Solidity...)

Reentrancy in Dogecoin._transfer(address,address,uint256) (#1011-1055):
External calls:
- swapAndLiquify(contractTokenBalance) (#1042)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1103-1110)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1089-1095)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#1042)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1103-1110)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#1054)
- _rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity) (#967)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1136)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1145)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#1156)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#883)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1137)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1147)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#1157)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#885)
- _tokenTransfer(from,to,amount,takeFee) (#1054)
- _rTotal = _rTotal.sub(rFee) (#922)
- _tokenTransfer(from,to,amount,takeFee) (#1054)
- _tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity) (#969)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#1155)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#882)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#1146)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#884)
Apply the check-effects-interactions pattern.

Additional information: link

Contract name (Dogecoin 2.0) 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.

Dogecoin.addLiquidity(uint256,uint256) (#1098-1111) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1103-1110)
Ensure that all the return values of the function calls are used.

Additional information: link

Dogecoin._approve(address,address,uint256).owner (#1003) shadows:
- Ownable.owner() (#435-437) (function)
Rename the local variables that shadow another component.

Additional information: link

Dogecoin.setMaxTxPercent(uint256) (#907-911) should emit an event for:
- _maxTxAmount = _tTotal.mul(maxTxPercent).div(10 ** 2) (#908-910)
Emit an event for critical parameter changes.

Additional information: link

Reentrancy in Dogecoin.transferFrom(address,address,uint256) (#808-812):
External calls:
- _transfer(sender,recipient,amount) (#809)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1103-1110)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1089-1095)
External calls sending eth:
- _transfer(sender,recipient,amount) (#809)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1103-1110)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#810)
- _allowances[owner][spender] = amount (#1007)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Dogecoin.transferFrom(address,address,uint256) (#808-812):
External calls:
- _transfer(sender,recipient,amount) (#809)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1103-1110)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1089-1095)
External calls sending eth:
- _transfer(sender,recipient,amount) (#809)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#1103-1110)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1008)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#810)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (#482-487) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now > _lockTime,Contract is locked until 7 days) (#484)
Avoid relying on block.timestamp.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#380-401) uses assembly
- INLINE ASM (#393-396)
Do not use evm assembly.

Additional information: link

SafeMath.mod(uint256,uint256,string) (#248-251) is never used and should be removed
Remove unused functions.

Additional information: link

Dogecoin._previousLiquidityFee (#730) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
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

Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#380-401):
- (success,returndata) = target.call{value: weiValue}(data) (#384)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Variable Dogecoin._maxTxAmount (#738) is not in mixedCase
Follow the Solidity naming convention.

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Redundant expression "this (#260)" inContext (#254-263)
Remove redundant statements if they congest code but offer no value.

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Variable Dogecoin._transferFromExcluded(address,address,uint256).rTransferAmount (#1154) is too similar to Dogecoin._transferStandard(address,address,uint256).tTransferAmount (#1135)
Prevent variables from having similar names.

Additional information: link

Dogecoin.slitherConstructorVariables() (#704-1167) uses literals with too many digits:
- numTokensSellToAddToLiquidity = 500000 * 10 ** 6 * 10 ** 9 (#739)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

Dogecoin.numTokensSellToAddToLiquidity (#739) should be constant
Add the constant attributes to state variables that never change.

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isExcludedFromFee(address) should be declared external:
- Dogecoin.isExcludedFromFee(address) (#999-1001)
Use the external attribute for functions never called from the contract.

Additional information: link

Token is deployed only at one blockchain

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute number of swaps.

Unable to crawl data from the website

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

Additional information: link

Unable to find token contract audit

Unable to verify token contract address on the website

Unable to find audit link on the website

Unable to find whitepaper link on the website

Unable to find Telegram link on the website

Unable to find Twitter link on the website

Token has a considerable age, but we're still unable to find its website

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

Token has a considerable age, but social accounts / website are missing or have few users

Young tokens have high risks of price dump / death

Token has relatively low CoinGecko rank

Token has relatively low CoinMarketCap rank