HKC [HelpKidz Coin] Token

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

Reentrancy in HelpKidzCoin._transfer(address,address,uint256) (#732-782):
External calls:
- swapAndLiquify(contractTokenBalance) (#777)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#777)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _rOwned[charityAddress] = _rOwned[charityAddress].add(rfunding.div(2)) (#671)
- _rOwned[marketingWallet] = _rOwned[marketingWallet].add(rfunding.div(2)) (#672)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#881)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#867)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#912)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#897)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#868)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#883)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#898)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#914)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _rTotal = _rTotal.sub(rFee).sub(rBurn) (#608)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _tOwned[charityAddress] = _tOwned[charityAddress].add(tfunding.div(2)) (#674)
- _tOwned[marketingWallet] = _tOwned[marketingWallet].add(tfunding.div(2)) (#675)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#896)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#911)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#882)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#913)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _tTotal = _tTotal.sub(tBurn) (#611)
Reentrancy in HelpKidzCoin.tokenSale(address) (#924-937):
External calls:
- _transfer(address(this),_refer,_tkns) (#932)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
- _transfer(address(this),msg.sender,_tkns) (#935)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
External calls sending eth:
- _transfer(address(this),_refer,_tkns) (#932)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- _transfer(address(this),msg.sender,_tkns) (#935)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
State variables written after the call(s):
- _transfer(address(this),msg.sender,_tkns) (#935)
- _burnFee = _previousBurnFee (#698)
- _burnFee = 0 (#692)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _fundingFee = _previousfundingFee (#699)
- _fundingFee = 0 (#693)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _previousBurnFee = _burnFee (#688)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _previousTaxFee = _taxFee (#687)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _previousfundingFee = _fundingFee (#689)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _rOwned[charityAddress] = _rOwned[charityAddress].add(rfunding.div(2)) (#671)
- _rOwned[marketingWallet] = _rOwned[marketingWallet].add(rfunding.div(2)) (#672)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#881)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#867)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#912)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#897)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#868)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#883)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#898)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#914)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _rTotal = _rTotal.sub(rFee).sub(rBurn) (#608)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _tBurnTotal = _tBurnTotal.add(tBurn) (#610)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _tFeeTotal = _tFeeTotal.add(tFee) (#609)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _tOwned[charityAddress] = _tOwned[charityAddress].add(tfunding.div(2)) (#674)
- _tOwned[marketingWallet] = _tOwned[marketingWallet].add(tfunding.div(2)) (#675)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#896)
- _tOwned[sender] = _tOwned[sender].sub(tAmount) (#911)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#882)
- _tOwned[recipient] = _tOwned[recipient].add(tTransferAmount) (#913)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _tTotal = _tTotal.sub(tBurn) (#611)
- _transfer(address(this),msg.sender,_tkns) (#935)
- _taxFee = _previousTaxFee (#697)
- _taxFee = 0 (#691)
- _transfer(address(this),msg.sender,_tkns) (#935)
- inSwapAndLiquify = true (#426)
- inSwapAndLiquify = false (#428)
Apply the check-effects-interactions pattern.

Additional information: link

HelpKidzCoin.withdrawToken() (#949-953) ignores return value by erc20token.transfer(owner(),balance) (#952)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

Contract ownership is not renounced (belongs to a wallet)

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.

HelpKidzCoin._transferStandard(address,address,uint256) (#863-875) performs a multiplication on the result of a division:
-Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#873)
HelpKidzCoin._transferStandard(address,address,uint256) (#863-875) performs a multiplication on the result of a division:
-Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#874)
HelpKidzCoin._transferToExcluded(address,address,uint256) (#877-890) performs a multiplication on the result of a division:
-Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#888)
HelpKidzCoin._transferToExcluded(address,address,uint256) (#877-890) performs a multiplication on the result of a division:
-Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#889)
HelpKidzCoin._transferFromExcluded(address,address,uint256) (#892-905) performs a multiplication on the result of a division:
-Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#903)
HelpKidzCoin._transferFromExcluded(address,address,uint256) (#892-905) performs a multiplication on the result of a division:
-Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#904)
HelpKidzCoin._transferBothExcluded(address,address,uint256) (#907-921) performs a multiplication on the result of a division:
-Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#919)
HelpKidzCoin._transferBothExcluded(address,address,uint256) (#907-921) performs a multiplication on the result of a division:
-Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#920)
Consider ordering multiplication before division.

Additional information: link

HelpKidzCoin.addLiquidity(uint256,uint256) (#826-840) ignores return value by uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
Ensure that all the return values of the function calls are used.

Additional information: link

HelpKidzCoin.allowance(address,address).owner (#481) shadows:
- Ownable.owner() (#328-330) (function)
HelpKidzCoin._approve(address,address,uint256).owner (#708) shadows:
- Ownable.owner() (#328-330) (function)
HelpKidzCoin.claim(uint256)._owner (#945) shadows:
- Ownable._owner (#317) (state variable)
Rename the local variables that shadow another component.

Additional information: link

HelpKidzCoin.setTaxFeePercent(uint256) (#576-578) should emit an event for:
- _taxFee = taxFee (#577)
HelpKidzCoin.setLiquidityFeePercent(uint256) (#580-582) should emit an event for:
- _liquidityFee = liquidityFee (#581)
HelpKidzCoin.setfundingFeePercent(uint256) (#584-586) should emit an event for:
- _fundingFee = fundingFee (#585)
HelpKidzCoin.setburnFeePercent(uint256) (#588-590) should emit an event for:
- _burnFee = burnFee (#589)
HelpKidzCoin.setMaxTxPercent(uint256) (#592-596) should emit an event for:
- _maxTxAmount = _tTotal.mul(maxTxPercent).div(10 ** 2) (#593-595)
Emit an event for critical parameter changes.

Additional information: link

HelpKidzCoin.claim(uint256)._owner (#945) lacks a zero-check on :
- _owner.transfer(amount) (#946)
Check that the address is not zero.

Additional information: link

Reentrancy in HelpKidzCoin._transfer(address,address,uint256) (#732-782):
External calls:
- swapAndLiquify(contractTokenBalance) (#777)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#777)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
State variables written after the call(s):
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _burnFee = _previousBurnFee (#698)
- _burnFee = 0 (#692)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _fundingFee = _previousfundingFee (#699)
- _fundingFee = 0 (#693)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _previousBurnFee = _burnFee (#688)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _previousTaxFee = _taxFee (#687)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _previousfundingFee = _fundingFee (#689)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _tBurnTotal = _tBurnTotal.add(tBurn) (#610)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _tFeeTotal = _tFeeTotal.add(tFee) (#609)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- _taxFee = _previousTaxFee (#697)
- _taxFee = 0 (#691)
Reentrancy in HelpKidzCoin.constructor() (#431-452):
External calls:
- uniswapV2PairAddr = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#441-442)
State variables written after the call(s):
- _isExcludedFromFee[owner()] = true (#447)
- _isExcludedFromFee[address(this)] = true (#448)
- sPrice = 100000 * 10 ** 12 (#451)
- uniswapV2RouterObject = _uniswapV2Router (#444)
Reentrancy in HelpKidzCoin.swapAndLiquify(uint256) (#786-806):
External calls:
- swapTokensForEth(half) (#798)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
- addLiquidity(otherHalf,ETHBalanceFromSwap) (#804)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
External calls sending eth:
- addLiquidity(otherHalf,ETHBalanceFromSwap) (#804)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
State variables written after the call(s):
- addLiquidity(otherHalf,ETHBalanceFromSwap) (#804)
- _allowances[owner][spender] = amount (#712)
Reentrancy in HelpKidzCoin.tokenSale(address) (#924-937):
External calls:
- _transfer(address(this),_refer,_tkns) (#932)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
- _transfer(address(this),msg.sender,_tkns) (#935)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
External calls sending eth:
- _transfer(address(this),_refer,_tkns) (#932)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- _transfer(address(this),msg.sender,_tkns) (#935)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
State variables written after the call(s):
- _transfer(address(this),msg.sender,_tkns) (#935)
- _allowances[owner][spender] = amount (#712)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in HelpKidzCoin._transfer(address,address,uint256) (#732-782):
External calls:
- swapAndLiquify(contractTokenBalance) (#777)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
External calls sending eth:
- swapAndLiquify(contractTokenBalance) (#777)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
Event emitted after the call(s):
- Transfer(sender,recipient,tTransferAmount) (#871)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,recipient,tTransferAmount) (#886)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,recipient,tTransferAmount) (#901)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,recipient,tTransferAmount) (#917)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,_blackholeZero,tBurn) (#872)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,_blackholeZero,tBurn) (#902)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,_blackholeZero,tBurn) (#887)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,_blackholeZero,tBurn) (#918)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#873)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#888)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#903)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#919)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#874)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#904)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#889)
- _tokenTransfer(from,to,amount,takeFee) (#781)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#920)
- _tokenTransfer(from,to,amount,takeFee) (#781)
Reentrancy in HelpKidzCoin.constructor() (#431-452):
External calls:
- uniswapV2PairAddr = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#441-442)
Event emitted after the call(s):
- Transfer(_blackholeZero,_msgSender(),_tTotal) (#449)
Reentrancy in HelpKidzCoin.swapAndLiquify(uint256) (#786-806):
External calls:
- swapTokensForEth(half) (#798)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
- addLiquidity(otherHalf,ETHBalanceFromSwap) (#804)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
External calls sending eth:
- addLiquidity(otherHalf,ETHBalanceFromSwap) (#804)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#713)
- addLiquidity(otherHalf,ETHBalanceFromSwap) (#804)
- SwapAndLiquify(half,ETHBalanceFromSwap,otherHalf) (#805)
Reentrancy in HelpKidzCoin.tokenSale(address) (#924-937):
External calls:
- _transfer(address(this),_refer,_tkns) (#932)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
- _transfer(address(this),msg.sender,_tkns) (#935)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- uniswapV2RouterObject.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#817-823)
External calls sending eth:
- _transfer(address(this),_refer,_tkns) (#932)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
- _transfer(address(this),msg.sender,_tkns) (#935)
- uniswapV2RouterObject.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,_blackholeDead,block.timestamp) (#832-839)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#713)
- _transfer(address(this),msg.sender,_tkns) (#935)
- SwapAndLiquify(half,ETHBalanceFromSwap,otherHalf) (#805)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,recipient,tTransferAmount) (#871)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,recipient,tTransferAmount) (#901)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,recipient,tTransferAmount) (#886)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,recipient,tTransferAmount) (#917)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,_blackholeZero,tBurn) (#872)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,_blackholeZero,tBurn) (#887)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,_blackholeZero,tBurn) (#902)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,_blackholeZero,tBurn) (#918)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#873)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#903)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#888)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,charityAddress,(tfunding.div(5)).mul(2)) (#919)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#874)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#904)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#889)
- _transfer(address(this),msg.sender,_tkns) (#935)
- Transfer(sender,marketingWallet,(tfunding.div(5).mul(3))) (#920)
- _transfer(address(this),msg.sender,_tkns) (#935)
Apply the check-effects-interactions pattern.

Additional information: link

Ownable.unlock() (#357-362) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now > _lockTime,Contract is locked until 7 days) (#359)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#69-78) uses assembly
- INLINE ASM (#76)
Address._functionCallWithValue(address,bytes,uint256,string) (#99-118) uses assembly
- INLINE ASM (#110-113)
Do not use evm assembly.

Additional information: link

HelpKidzCoin._transfer(address,address,uint256) (#732-782) compares to a boolean constant:
-saleend == true (#746)
HelpKidzCoin.afterSaleEnd(address) (#724-727) compares to a boolean constant:
-require(bool)(allowed == true || from == address(this) || from == owner()) (#725)
Remove the equality to the boolean constant.

Additional information: link

HelpKidzCoin.includeInReward(address) (#552-563) has costly operations inside a loop:
- _excludedAddressesFromReward.pop() (#559)
Use a local variable to hold the loop computation result.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#99-118) is never used and should be removed
Address.functionCall(address,bytes) (#86-88) is never used and should be removed
Address.functionCall(address,bytes,string) (#89-91) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#92-94) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#95-98) is never used and should be removed
Address.sendValue(address,uint256) (#79-85) is never used and should be removed
Context._msgData() (#62-65) is never used and should be removed
SafeMath.mod(uint256,uint256) (#49-51) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#52-55) is never used and should be removed
Remove unused functions.

Additional information: link

HelpKidzCoin._rTotal (#383) is set pre-construction with a non-constant function or state variable:
- (MAX - (MAX % _tTotal))
HelpKidzCoin._previousTaxFee (#390) is set pre-construction with a non-constant function or state variable:
- _taxFee
HelpKidzCoin._previousLiquidityFee (#392) is set pre-construction with a non-constant function or state variable:
- _liquidityFee
HelpKidzCoin._previousBurnFee (#394) is set pre-construction with a non-constant function or state variable:
- _burnFee
HelpKidzCoin._previousfundingFee (#396) is set pre-construction with a non-constant function or state variable:
- _fundingFee
HelpKidzCoin._maxTxAmount (#412) is set pre-construction with a non-constant function or state variable:
- _tTotal
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.sendValue(address,uint256) (#79-85):
- (success) = recipient.call{value: amount}() (#83)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#99-118):
- (success,returndata) = target.call{value: weiValue}(data) (#102)
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() (#144) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#145) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#159) is not in mixedCase
Function IUniswapV2Router01.WETH() (#177) is not in mixedCase
Parameter HelpKidzCoin.setSwapAndLiquifyEnabled(bool)._enabled (#598) is not in mixedCase
Parameter HelpKidzCoin.calculateTaxFee(uint256)._amount (#656) is not in mixedCase
Parameter HelpKidzCoin.calculateBurnFee(uint256)._amount (#662) is not in mixedCase
Parameter HelpKidzCoin.calculatefundingFee(uint256)._amount (#678) is not in mixedCase
Parameter HelpKidzCoin.setEndSale(bool)._saleend (#718) is not in mixedCase
Parameter HelpKidzCoin.setAllowed(bool)._allowed (#728) is not in mixedCase
Parameter HelpKidzCoin.tokenSale(address)._refer (#924) is not in mixedCase
Variable HelpKidzCoin._taxFee (#389) is not in mixedCase
Variable HelpKidzCoin._liquidityFee (#391) is not in mixedCase
Variable HelpKidzCoin._burnFee (#393) is not in mixedCase
Variable HelpKidzCoin._fundingFee (#395) is not in mixedCase
Variable HelpKidzCoin._maxTxAmount (#412) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#63)" inContext (#58-66)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#181) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#182)
Variable HelpKidzCoin._transferStandard(address,address,uint256).rTransferAmount (#864) is too similar to HelpKidzCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#908)
Variable HelpKidzCoin._transferStandard(address,address,uint256).rTransferAmount (#864) is too similar to HelpKidzCoin._getTValues(uint256).tTransferAmount (#624)
Variable HelpKidzCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#908) is too similar to HelpKidzCoin._transferToExcluded(address,address,uint256).tTransferAmount (#878)
Variable HelpKidzCoin.reflectionFromToken(uint256,bool).rTransferAmount (#531) is too similar to HelpKidzCoin._transferToExcluded(address,address,uint256).tTransferAmount (#878)
Variable HelpKidzCoin._transferStandard(address,address,uint256).rTransferAmount (#864) is too similar to HelpKidzCoin._transferStandard(address,address,uint256).tTransferAmount (#864)
Variable HelpKidzCoin._transferStandard(address,address,uint256).rTransferAmount (#864) is too similar to HelpKidzCoin._transferToExcluded(address,address,uint256).tTransferAmount (#878)
Variable HelpKidzCoin._getValues(uint256).rTransferAmount (#616) is too similar to HelpKidzCoin._getTValues(uint256).tTransferAmount (#624)
Variable HelpKidzCoin._getValues(uint256).rTransferAmount (#616) is too similar to HelpKidzCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#908)
Variable HelpKidzCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#893) is too similar to HelpKidzCoin._getTValues(uint256).tTransferAmount (#624)
Variable HelpKidzCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#893) is too similar to HelpKidzCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#908)
Variable HelpKidzCoin._transferStandard(address,address,uint256).rTransferAmount (#864) is too similar to HelpKidzCoin._getValues(uint256).tTransferAmount (#615)
Variable HelpKidzCoin._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#633) is too similar to HelpKidzCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#908)
Variable HelpKidzCoin._transferToExcluded(address,address,uint256).rTransferAmount (#878) is too similar to HelpKidzCoin._transferToExcluded(address,address,uint256).tTransferAmount (#878)
Variable HelpKidzCoin._transferStandard(address,address,uint256).rTransferAmount (#864) is too similar to HelpKidzCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#893)
Variable HelpKidzCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#893) is too similar to HelpKidzCoin._transferStandard(address,address,uint256).tTransferAmount (#864)
Variable HelpKidzCoin._getValues(uint256).rTransferAmount (#616) is too similar to HelpKidzCoin._transferToExcluded(address,address,uint256).tTransferAmount (#878)
Variable HelpKidzCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#893) is too similar to HelpKidzCoin._transferToExcluded(address,address,uint256).tTransferAmount (#878)
Variable HelpKidzCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#908) is too similar to HelpKidzCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#908)
Variable HelpKidzCoin.reflectionFromToken(uint256,bool).rTransferAmount (#531) is too similar to HelpKidzCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#908)
Variable HelpKidzCoin.reflectionFromToken(uint256,bool).rTransferAmount (#531) is too similar to HelpKidzCoin._getTValues(uint256).tTransferAmount (#624)
Variable HelpKidzCoin._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#633) is too similar to HelpKidzCoin._transferToExcluded(address,address,uint256).tTransferAmount (#878)
Variable HelpKidzCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#893) is too similar to HelpKidzCoin._getValues(uint256).tTransferAmount (#615)
Variable HelpKidzCoin._transferFromExcluded(address,address,uint256).rTransferAmount (#893) is too similar to HelpKidzCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#893)
Variable HelpKidzCoin._transferToExcluded(address,address,uint256).rTransferAmount (#878) is too similar to HelpKidzCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#893)
Variable HelpKidzCoin._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#633) is too similar to HelpKidzCoin._getTValues(uint256).tTransferAmount (#624)
Variable HelpKidzCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#908) is too similar to HelpKidzCoin._transferStandard(address,address,uint256).tTransferAmount (#864)
Variable HelpKidzCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#908) is too similar to HelpKidzCoin._getValues(uint256).tTransferAmount (#615)
Variable HelpKidzCoin._getValues(uint256).rTransferAmount (#616) is too similar to HelpKidzCoin._transferStandard(address,address,uint256).tTransferAmount (#864)
Variable HelpKidzCoin._getValues(uint256).rTransferAmount (#616) is too similar to HelpKidzCoin._getValues(uint256).tTransferAmount (#615)
Variable HelpKidzCoin.reflectionFromToken(uint256,bool).rTransferAmount (#531) is too similar to HelpKidzCoin._transferStandard(address,address,uint256).tTransferAmount (#864)
Variable HelpKidzCoin._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#633) is too similar to HelpKidzCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#893)
Variable HelpKidzCoin._transferToExcluded(address,address,uint256).rTransferAmount (#878) is too similar to HelpKidzCoin._transferBothExcluded(address,address,uint256).tTransferAmount (#908)
Variable HelpKidzCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#908) is too similar to HelpKidzCoin._getTValues(uint256).tTransferAmount (#624)
Variable HelpKidzCoin.reflectionFromToken(uint256,bool).rTransferAmount (#531) is too similar to HelpKidzCoin._getValues(uint256).tTransferAmount (#615)
Variable HelpKidzCoin._transferToExcluded(address,address,uint256).rTransferAmount (#878) is too similar to HelpKidzCoin._transferStandard(address,address,uint256).tTransferAmount (#864)
Variable HelpKidzCoin._transferToExcluded(address,address,uint256).rTransferAmount (#878) is too similar to HelpKidzCoin._getValues(uint256).tTransferAmount (#615)
Variable HelpKidzCoin._transferBothExcluded(address,address,uint256).rTransferAmount (#908) is too similar to HelpKidzCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#893)
Variable HelpKidzCoin._transferToExcluded(address,address,uint256).rTransferAmount (#878) is too similar to HelpKidzCoin._getTValues(uint256).tTransferAmount (#624)
Variable HelpKidzCoin._getValues(uint256).rTransferAmount (#616) is too similar to HelpKidzCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#893)
Variable HelpKidzCoin._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#633) is too similar to HelpKidzCoin._transferStandard(address,address,uint256).tTransferAmount (#864)
Variable HelpKidzCoin.reflectionFromToken(uint256,bool).rTransferAmount (#531) is too similar to HelpKidzCoin._transferFromExcluded(address,address,uint256).tTransferAmount (#893)
Variable HelpKidzCoin._getRValues(uint256,uint256,uint256,uint256,uint256).rTransferAmount (#633) is too similar to HelpKidzCoin._getValues(uint256).tTransferAmount (#615)
Prevent variables from having similar names.

Additional information: link

HelpKidzCoin.constructor() (#431-452) uses literals with too many digits:
- sPrice = 100000 * 10 ** 12 (#451)
HelpKidzCoin.tokenSale(address) (#924-937) uses literals with too many digits:
- msg.sender != _refer && balanceOf(_refer) != 0 && _refer != 0x0000000000000000000000000000000000000000 (#930)
HelpKidzCoin.slitherConstructorVariables() (#365-956) uses literals with too many digits:
- _tTotal = 1000000000 * 10 ** 12 (#382)
HelpKidzCoin.slitherConstructorVariables() (#365-956) uses literals with too many digits:
- _blackholeDead = 0x000000000000000000000000000000000000dEaD (#403)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

HelpKidzCoin._previousLiquidityFee (#392) is never used in HelpKidzCoin (#365-956)
Remove unused state variables.

Additional information: link

HelpKidzCoin._blackholeDead (#403) should be constant
HelpKidzCoin._blackholeZero (#402) should be constant
HelpKidzCoin._decimals (#379) should be constant
HelpKidzCoin._name (#377) should be constant
HelpKidzCoin._symbol (#378) should be constant
HelpKidzCoin.charityAddress (#386) should be constant
HelpKidzCoin.epoch (#415) should be constant
HelpKidzCoin.lastPoolBurnTime (#414) should be constant
HelpKidzCoin.marketingWallet (#387) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#335-340)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#341-345)
geUnlockTime() should be declared external:
- Ownable.geUnlockTime() (#346-348)
lock(uint256) should be declared external:
- Ownable.lock(uint256) (#350-355)
unlock() should be declared external:
- Ownable.unlock() (#357-362)
name() should be declared external:
- HelpKidzCoin.name() (#455-457)
symbol() should be declared external:
- HelpKidzCoin.symbol() (#459-461)
decimals() should be declared external:
- HelpKidzCoin.decimals() (#463-465)
totalSupply() should be declared external:
- HelpKidzCoin.totalSupply() (#467-469)
transfer(address,uint256) should be declared external:
- HelpKidzCoin.transfer(address,uint256) (#476-479)
allowance(address,address) should be declared external:
- HelpKidzCoin.allowance(address,address) (#481-483)
approve(address,uint256) should be declared external:
- HelpKidzCoin.approve(address,uint256) (#485-488)
transferFrom(address,address,uint256) should be declared external:
- HelpKidzCoin.transferFrom(address,address,uint256) (#490-494)
increaseAllowance(address,uint256) should be declared external:
- HelpKidzCoin.increaseAllowance(address,uint256) (#496-499)
decreaseAllowance(address,uint256) should be declared external:
- HelpKidzCoin.decreaseAllowance(address,uint256) (#501-504)
isExcludedFromReward(address) should be declared external:
- HelpKidzCoin.isExcludedFromReward(address) (#506-508)
totalFees() should be declared external:
- HelpKidzCoin.totalFees() (#512-514)
deliver(uint256) should be declared external:
- HelpKidzCoin.deliver(uint256) (#516-523)
excludeFromReward(address) should be declared external:
- HelpKidzCoin.excludeFromReward(address) (#542-550)
excludeFromFee(address) should be declared external:
- HelpKidzCoin.excludeFromFee(address) (#566-569)
includeInFee(address) should be declared external:
- HelpKidzCoin.includeInFee(address) (#571-574)
setSwapAndLiquifyEnabled(bool) should be declared external:
- HelpKidzCoin.setSwapAndLiquifyEnabled(bool) (#598-601)
isExcludedFromFee(address) should be declared external:
- HelpKidzCoin.isExcludedFromFee(address) (#704-706)
setEndSale(bool) should be declared external:
- HelpKidzCoin.setEndSale(bool) (#718-720)
setAllowed(bool) should be declared external:
- HelpKidzCoin.setAllowed(bool) (#728-730)
tokenSale(address) should be declared external:
- HelpKidzCoin.tokenSale(address) (#924-937)
claim(uint256) should be declared external:
- HelpKidzCoin.claim(uint256) (#944-947)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract has 5% buy tax and 4% sell tax.
Taxes are low but contract ownership is not renounced. Token has a high risk of becoming a honeypot.

Average 30d PancakeSwap liquidity is low.

Average 30d PancakeSwap volume is low.

Number of Binance Smart Chain (BSC) token holders is low.

Average PancakeSwap trading volume, liqudity, number of swaps are low. Token seems to be inactive.

Token is deployed only at one blockchain

Token has only one trading pair

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

Additional information: link

Unable to find token on CoinMarketCap

Additional information: link

Unable to find token contract audit

Unable to find audit link on the website

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death

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

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death