KAIR [KAIROS] Token

Reentrancy in kairos._transfer(address,address,uint256) (#797-833):
External calls:
- swapAndSendToFee(sellTokens) (#819)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#867-873)
External calls sending eth:
- swapAndSendToFee(sellTokens) (#819)
- address(_marketingWallet).transfer(ethToSend) (#840)
State variables written after the call(s):
- _tOwned[from] -= amount (#823)
- transferAmount = _getValues(amount,from) (#828)
- _tOwned[address(this)] += marketingFee + liquidityFee (#779)
- _tOwned[to] += transferAmount (#831)
- swapping = false (#820)
Apply the check-effects-interactions pattern.

Additional information: link

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

Contract ownership is not renounced (belongs to a wallet)

kairos.allowance(address,address).owner (#738) shadows:
- Ownable.owner() (#417-419) (function)
kairos._approve(address,address,uint256).owner (#789) shadows:
- Ownable.owner() (#417-419) (function)
Rename the local variables that shadow another component.

Additional information: link

Reentrancy in kairos.constructor() (#695-711):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#700)
State variables written after the call(s):
- _isExcludedFromFee[owner()] = true (#706)
- _isExcludedFromFee[address(this)] = true (#707)
- _isExcludedFromFee[_marketingWallet] = true (#708)
- uniswapV2Pair = _uniswapV2Pair (#703)
- uniswapV2Router = _uniswapV2Router (#702)
Reentrancy in kairos.swapAndLiquify() (#843-855):
External calls:
- newBalance = swapTokensForEth(half) (#848)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#867-873)
- addLiquidity(otherHalf,newBalance) (#852)
- (ethFromLiquidity) = uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#882-889)
- (success) = recipient.call{value: amount}() (#302)
- address(_marketingWallet).sendValue(ethAmount - ethFromLiquidity) (#892)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#852)
- (ethFromLiquidity) = uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#882-889)
- (success) = recipient.call{value: amount}() (#302)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#852)
- _allowances[owner][spender] = amount (#793)
Reentrancy in kairos.transferFrom(address,address,uint256) (#747-751):
External calls:
- _transfer(sender,recipient,amount) (#748)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#867-873)
External calls sending eth:
- _transfer(sender,recipient,amount) (#748)
- address(_marketingWallet).transfer(ethToSend) (#840)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()] - amount) (#749)
- _allowances[owner][spender] = amount (#793)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in kairos._transfer(address,address,uint256) (#797-833):
External calls:
- swapAndSendToFee(sellTokens) (#819)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#867-873)
External calls sending eth:
- swapAndSendToFee(sellTokens) (#819)
- address(_marketingWallet).transfer(ethToSend) (#840)
Event emitted after the call(s):
- Transfer(from,address(this),marketingFee + liquidityFee) (#780)
- transferAmount = _getValues(amount,from) (#828)
- Transfer(from,to,transferAmount) (#832)
Reentrancy in kairos.constructor() (#695-711):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#700)
Event emitted after the call(s):
- Transfer(address(0),_msgSender(),_tTotal) (#710)
Reentrancy in kairos.swapAndLiquify() (#843-855):
External calls:
- newBalance = swapTokensForEth(half) (#848)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#867-873)
- addLiquidity(otherHalf,newBalance) (#852)
- (ethFromLiquidity) = uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#882-889)
- (success) = recipient.call{value: amount}() (#302)
- address(_marketingWallet).sendValue(ethAmount - ethFromLiquidity) (#892)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#852)
- (ethFromLiquidity) = uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,owner(),block.timestamp) (#882-889)
- (success) = recipient.call{value: amount}() (#302)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#794)
- addLiquidity(otherHalf,newBalance) (#852)
- SwapAndLiquify(half,newBalance,otherHalf) (#853)
Reentrancy in kairos.transferFrom(address,address,uint256) (#747-751):
External calls:
- _transfer(sender,recipient,amount) (#748)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#867-873)
External calls sending eth:
- _transfer(sender,recipient,amount) (#748)
- address(_marketingWallet).transfer(ethToSend) (#840)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#794)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()] - amount) (#749)
Apply the check-effects-interactions pattern.

Additional information: link

kairos._transfer(address,address,uint256) (#797-833) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(_lastBuy[to] + _buyCooldown < block.timestamp,Must wait til after coooldown to buy) (#811)
kairos.addLiquidity(uint256,uint256) (#877-893) uses timestamp for comparisons
Dangerous comparisons:
- ethAmount - ethFromLiquidity > 0 (#891)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#271-280) uses assembly
- INLINE ASM (#278)
Address._functionCallWithValue(address,bytes,uint256,string) (#364-385) uses assembly
- INLINE ASM (#377-380)
Do not use evm assembly.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#364-385) is never used and should be removed
Address.functionCall(address,bytes) (#324-326) is never used and should be removed
Address.functionCall(address,bytes,string) (#334-336) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#349-351) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#359-362) is never used and should be removed
Address.isContract(address) (#271-280) is never used and should be removed
Address.sendValue(address,uint256) (#298-304) is never used and should be removed
Context._msgData() (#243-246) is never used and should be removed
SafeMath.add(uint256,uint256) (#106-111) is never used and should be removed
SafeMath.div(uint256,uint256) (#180-182) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#196-202) is never used and should be removed
SafeMath.mod(uint256,uint256) (#216-218) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#232-235) is never used and should be removed
SafeMath.mul(uint256,uint256) (#154-166) is never used and should be removed
SafeMath.sub(uint256,uint256) (#123-125) is never used and should be removed
SafeMath.sub(uint256,uint256,string) (#137-142) is never used and should be removed
kairos.addLiquidity(uint256,uint256) (#877-893) is never used and should be removed
kairos.swapAndLiquify() (#843-855) is never used and should be removed
Remove unused functions.

Additional information: link

Low level call in Address.sendValue(address,uint256) (#298-304):
- (success) = recipient.call{value: amount}() (#302)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#364-385):
- (success,returndata) = target.call{value: weiValue}(data) (#368)
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() (#488) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#489) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#506) is not in mixedCase
Function IUniswapV2Router01.WETH() (#528) is not in mixedCase
Contract kairos (#665-895) is not in CapWords
Variable kairos._maxTxAmount (#678) is not in mixedCase
Constant kairos._name (#680) is not in UPPER_CASE_WITH_UNDERSCORES
Constant kairos._symbol (#681) is not in UPPER_CASE_WITH_UNDERSCORES
Constant kairos._decimals (#682) is not in UPPER_CASE_WITH_UNDERSCORES
Variable kairos._marketingFee (#684) is not in mixedCase
Variable kairos._liquidityFee (#685) is not in mixedCase
Variable kairos._marketingWallet (#686) is not in mixedCase
Variable kairos._buyCooldown (#688) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#244)" inContext (#238-247)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Reentrancy in kairos._transfer(address,address,uint256) (#797-833):
External calls:
- swapAndSendToFee(sellTokens) (#819)
- address(_marketingWallet).transfer(ethToSend) (#840)
State variables written after the call(s):
- _tOwned[from] -= amount (#823)
- transferAmount = _getValues(amount,from) (#828)
- _tOwned[address(this)] += marketingFee + liquidityFee (#779)
- _tOwned[to] += transferAmount (#831)
- swapping = false (#820)
Event emitted after the call(s):
- Transfer(from,address(this),marketingFee + liquidityFee) (#780)
- transferAmount = _getValues(amount,from) (#828)
- Transfer(from,to,transferAmount) (#832)
Reentrancy in kairos.transferFrom(address,address,uint256) (#747-751):
External calls:
- _transfer(sender,recipient,amount) (#748)
- address(_marketingWallet).transfer(ethToSend) (#840)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()] - amount) (#749)
- _allowances[owner][spender] = amount (#793)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#794)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()] - amount) (#749)
Apply the check-effects-interactions pattern.

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)
Prevent variables from having similar names.

Additional information: link

Address.sendValue(address,uint256) (#298-304) uses literals with too many digits:
- recipient = address(0x000000000000000000000000000000000000dEaD) (#300)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

kairos._buyCooldown (#688) should be constant
kairos._liquidityFee (#685) should be constant
kairos._marketingFee (#684) should be constant
kairos._marketingWallet (#686) should be constant
kairos._maxTxAmount (#678) should be constant
kairos._tTotal (#677) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#436-439)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#445-449)
name() should be declared external:
- kairos.name() (#713-715)
symbol() should be declared external:
- kairos.symbol() (#717-719)
decimals() should be declared external:
- kairos.decimals() (#721-723)
totalSupply() should be declared external:
- kairos.totalSupply() (#725-727)
transfer(address,uint256) should be declared external:
- kairos.transfer(address,uint256) (#733-736)
allowance(address,address) should be declared external:
- kairos.allowance(address,address) (#738-740)
approve(address,uint256) should be declared external:
- kairos.approve(address,uint256) (#742-745)
transferFrom(address,address,uint256) should be declared external:
- kairos.transferFrom(address,address,uint256) (#747-751)
increaseAllowance(address,uint256) should be declared external:
- kairos.increaseAllowance(address,uint256) (#753-756)
decreaseAllowance(address,uint256) should be declared external:
- kairos.decreaseAllowance(address,uint256) (#758-761)
excludeFromFee(address) should be declared external:
- kairos.excludeFromFee(address) (#763-765)
includeInFee(address) should be declared external:
- kairos.includeInFee(address) (#767-769)
isExcludedFromFee(address) should be declared external:
- kairos.isExcludedFromFee(address) (#785-787)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract has 9% buy tax and 9% 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.

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

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find website, listings and other project-related information

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank