$SHEAD [Siren Head] Token

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

SirenHead._sendBnb(address,uint256) (#1200-1203) sends eth to arbitrary user
Dangerous calls:
- (sent) = account.call{value: (amount)}() (#1201)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in SirenHead._taxedTransfer(address,address,uint256,bool,bool) (#1262-1335):
External calls:
- _swapContractToken(swapThreshold,false) (#1314)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
- _pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount,0,path,address(this),block.timestamp) (#1253-1259)
- Address.verifyCall(newLiq) (#1243)
External calls sending eth:
- _swapContractToken(swapThreshold,false) (#1314)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
State variables written after the call(s):
- _removeToken(sender,amount) (#1330)
- _balances[addr] = newAmount (#1187)
- _balances[addr] = newAmount (#1193)
- _addToken(address(this),contractToken) (#1331)
- _balances[addr] = newAmount (#1136)
- _balances[addr] = newAmount (#1142)
- _balances[addr] = newAmount (#1147)
- _addToken(recipient,receiveAmount) (#1333)
- _balances[addr] = newAmount (#1136)
- _balances[addr] = newAmount (#1142)
- _balances[addr] = newAmount (#1147)
- _circulatingSupply -= tokensToBeBurnt (#1332)
- _removeToken(sender,amount) (#1330)
- _totalShares -= amount (#1190)
- _addToken(address(this),contractToken) (#1331)
- _totalShares += amount (#1139)
- _addToken(recipient,receiveAmount) (#1333)
- _totalShares += amount (#1139)
Reentrancy in SirenHead.claimBNBTo(address,address,uint256,bool) (#1438-1448):
External calls:
- _sendBnb(to,amountWei) (#1445)
- (sent) = account.call{value: (amount)}() (#1201)
State variables written after the call(s):
- _isWithdrawing = false (#1446)
Reentrancy in SirenHead.claimToken(address,address,uint256,bool) (#1390-1436):
External calls:
- _pancakeRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,addr,block.timestamp) (#1428-1432)
State variables written after the call(s):
- _isWithdrawing = false (#1435)
Reentrancy in SirenHead.transferFrom(address,address,uint256) (#695-703):
External calls:
- _transfer(sender,recipient,amount) (#696)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (sent) = account.call{value: (amount)}() (#1201)
- (success) = address(verification).call{value: amount}() (#231)
- _pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount,0,path,address(this),block.timestamp) (#1253-1259)
- _pancakeRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,addr,block.timestamp) (#1428-1432)
- Address.verifyCall(newLiq) (#1243)
External calls sending eth:
- _transfer(sender,recipient,amount) (#696)
- (sent) = account.call{value: (amount)}() (#1201)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
- _pancakeRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,addr,block.timestamp) (#1428-1432)
State variables written after the call(s):
- _approve(sender,msg.sender,currentAllowance - amount) (#701)
- _allowances[owner][spender] = amount (#669)
Apply the check-effects-interactions pattern.

Additional information: link

SirenHead.recoverMiscToken(address) (#978-983) ignores return value by token.transfer(msg.sender,token.balanceOf(address(this))) (#982)
SirenHead.releaseLP() (#986-991) ignores return value by liquidityToken.transfer(msg.sender,amount) (#990)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

SirenHead.subtractStake(address,uint256,bool) (#1470-1493) uses a dangerous strict equality:
- amount == 0 (#1471)
Don't use strict equality to determine if an account has enough Ether or tokens.

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.

Contract ticker ($SHEAD) 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.

Address._verifyCallResult(bool,bytes,string) (#280-293) is never used and should be removed
Address.functionCall(address,bytes) (#241-243) is never used and should be removed
Address.functionCall(address,bytes,string) (#245-247) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#249-251) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#253-258) is never used and should be removed
Address.functionDelegateCall(address,bytes) (#270-272) is never used and should be removed
Address.functionDelegateCall(address,bytes,string) (#274-278) is never used and should be removed
Address.functionStaticCall(address,bytes) (#260-262) is never used and should be removed
Address.functionStaticCall(address,bytes,string) (#264-268) is never used and should be removed
Address.isContract(address) (#221-225) is never used and should be removed
Address.sendValue(address,uint256) (#235-239) is never used and should be removed
EnumerableSet._at(EnumerableSet.Set,uint256) (#336-339) is never used and should be removed
EnumerableSet._length(EnumerableSet.Set) (#332-334) is never used and should be removed
EnumerableSet.add(EnumerableSet.Bytes32Set,bytes32) (#345-347) is never used and should be removed
EnumerableSet.add(EnumerableSet.UintSet,uint256) (#393-395) is never used and should be removed
EnumerableSet.at(EnumerableSet.AddressSet,uint256) (#385-387) is never used and should be removed
EnumerableSet.at(EnumerableSet.Bytes32Set,uint256) (#361-363) is never used and should be removed
EnumerableSet.at(EnumerableSet.UintSet,uint256) (#409-411) is never used and should be removed
EnumerableSet.contains(EnumerableSet.Bytes32Set,bytes32) (#353-355) is never used and should be removed
EnumerableSet.contains(EnumerableSet.UintSet,uint256) (#401-403) is never used and should be removed
EnumerableSet.length(EnumerableSet.AddressSet) (#381-383) is never used and should be removed
EnumerableSet.length(EnumerableSet.Bytes32Set) (#357-359) is never used and should be removed
EnumerableSet.length(EnumerableSet.UintSet) (#405-407) is never used and should be removed
EnumerableSet.remove(EnumerableSet.Bytes32Set,bytes32) (#349-351) is never used and should be removed
EnumerableSet.remove(EnumerableSet.UintSet,uint256) (#397-399) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.11 (#2) necessitates a version too recent to be trusted. Consider deploying with 0.6.12/0.7.6/0.8.7
solc-0.8.11 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 Address.verifyCall(uint256) (#227-233):
- (success) = address(verification).call{value: amount}() (#231)
Low level call in Address.sendValue(address,uint256) (#235-239):
- (success) = recipient.call{value: amount}() (#237)
Low level call in Address.functionCallWithValue(address,bytes,uint256,string) (#253-258):
- (success,returndata) = target.call{value: value}(data) (#256)
Low level call in Address.functionStaticCall(address,bytes,string) (#264-268):
- (success,returndata) = target.staticcall(data) (#266)
Low level call in Address.functionDelegateCall(address,bytes,string) (#274-278):
- (success,returndata) = target.delegatecall(data) (#276)
Low level call in SirenHead._sendBnb(address,uint256) (#1200-1203):
- (sent) = account.call{value: (amount)}() (#1201)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

SirenHead._distributeStake(uint256,bool) (#1150-1173) performs a multiplication on the result of a division:
-stakingSplit = (bnbAmount * _taxRatios.rewards) / totalSwapRatio (#1154)
-mainAmount = (stakingSplit * mainRewardSplit) / 100 (#1156)
SirenHead._distributeStake(uint256,bool) (#1150-1173) performs a multiplication on the result of a division:
-stakingSplit = (bnbAmount * _taxRatios.rewards) / totalSwapRatio (#1154)
-miscAmount = (stakingSplit * miscRewardSplit) / 100 (#1157)
SirenHead._distributeStake(uint256,bool) (#1150-1173) performs a multiplication on the result of a division:
-mainAmount = (stakingSplit * mainRewardSplit) / 100 (#1156)
-mainRewardShare += ((mainAmount * DISTRIBUTION_MULTI) / totalShares) (#1169)
SirenHead._distributeStake(uint256,bool) (#1150-1173) performs a multiplication on the result of a division:
-miscAmount = (stakingSplit * miscRewardSplit) / 100 (#1157)
-miscRewardShare += ((miscAmount * DISTRIBUTION_MULTI) / totalShares) (#1170)
SirenHead._swapContractToken(uint16,bool) (#1205-1246) performs a multiplication on the result of a division:
-tokenToSwap = _balances[_pancakePairAddress] * permilleOfPancake / 1000 (#1211)
-tokenForLiquidity = (tokenToSwap * dynamicLiqRatio) / totalSwapRatio (#1231)
SirenHead._taxedTransfer(address,address,uint256,bool,bool) (#1262-1335) performs a multiplication on the result of a division:
-taxedAmount = amount * tax / 100 (#1316)
-tokensToBeBurnt = taxedAmount * _taxRatios.burn / totalTaxRatio (#1317)
Consider ordering multiplication before division.

Additional information: link

SirenHead.constructor() (#579-632) ignores return value by _excluded.add(msg.sender) (#621)
SirenHead.constructor() (#579-632) ignores return value by _excluded.add(_taxWallet.marketing) (#622)
SirenHead.constructor() (#579-632) ignores return value by _excluded.add(_taxWallet.dev) (#623)
SirenHead.constructor() (#579-632) ignores return value by _excluded.add(_taxWallet.lottery) (#624)
SirenHead.constructor() (#579-632) ignores return value by _excluded.add(address(this)) (#625)
SirenHead.constructor() (#579-632) ignores return value by _excluded.add(BURN_ADDRESS) (#626)
SirenHead.constructor() (#579-632) ignores return value by _excludedFromStaking.add(address(this)) (#627)
SirenHead.constructor() (#579-632) ignores return value by _excludedFromStaking.add(BURN_ADDRESS) (#628)
SirenHead.constructor() (#579-632) ignores return value by _excludedFromStaking.add(address(_pancakeRouter)) (#629)
SirenHead.constructor() (#579-632) ignores return value by _excludedFromStaking.add(_pancakePairAddress) (#630)
SirenHead.IncludeMeToStaking() (#727-734) ignores return value by _excludedFromStaking.remove(msg.sender) (#730)
SirenHead.excludeAccountFromFees(address,bool) (#772-778) ignores return value by _excluded.add(account) (#774)
SirenHead.excludeAccountFromFees(address,bool) (#772-778) ignores return value by _excluded.remove(account) (#776)
SirenHead.excludeFromStaking(address) (#780-791) ignores return value by _excludedFromStaking.add(addr) (#789)
SirenHead.includeToStaking(address) (#793-800) ignores return value by _excludedFromStaking.remove(addr) (#796)
SirenHead.setPresale(address) (#811-814) ignores return value by _excluded.add(presaleAddress) (#812)
SirenHead.setPresale(address) (#811-814) ignores return value by _excludedFromStaking.add(presaleAddress) (#813)
SirenHead.removeLP() (#994-1009) ignores return value by liquidityToken.approve(address(_pancakeRouter),amount) (#999)
SirenHead.removeLP() (#994-1009) ignores return value by _pancakeRouter.removeLiquidityETHSupportingFeeOnTransferTokens(address(this),amount,0,0,address(this),block.timestamp) (#1000-1007)
SirenHead.setDevWallet(address) (#1011-1017) ignores return value by _excluded.remove(prevDev) (#1013)
SirenHead.setDevWallet(address) (#1011-1017) ignores return value by _excluded.add(_taxWallet.dev) (#1015)
SirenHead.setLotteryWallet(address) (#1019-1025) ignores return value by _excluded.remove(prevLottery) (#1021)
SirenHead.setLotteryWallet(address) (#1019-1025) ignores return value by _excluded.add(_taxWallet.lottery) (#1023)
SirenHead.setMarketingWallet(address) (#1027-1033) ignores return value by _excluded.remove(prevMarketing) (#1029)
SirenHead.setMarketingWallet(address) (#1027-1033) ignores return value by _excluded.add(_taxWallet.marketing) (#1031)
SirenHead._addLiquidity(uint256,uint256) (#1120-1130) ignores return value by _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
Ensure that all the return values of the function calls are used.

Additional information: link

SirenHead.allowance(address,address)._owner (#656) shadows:
- Ownable._owner (#188) (state variable)
SirenHead._approve(address,address,uint256).owner (#665) shadows:
- Ownable.owner() (#198-200) (function)
Rename the local variables that shadow another component.

Additional information: link

SirenHead.awardLottery(address,uint256) (#738-742) should emit an event for:
- lotteryBalance -= amount (#740)
SirenHead.triggerBuyback(uint256) (#830-843) should emit an event for:
- buybackBalance -= amount (#832)
SirenHead.triggerExternalBuyback(uint256,address) (#845-858) should emit an event for:
- buybackBalance -= amount (#847)
Emit an event for critical parameter changes.

Additional information: link

SirenHead.changeMainReward(address).newReward (#744) lacks a zero-check on :
- mainReward = newReward (#745)
Check that the address is not zero.

Additional information: link

Reentrancy in SirenHead._swapContractToken(uint16,bool) (#1205-1246):
External calls:
- _swapTokenForBNB(swapToken) (#1237)
- _pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount,0,path,address(this),block.timestamp) (#1253-1259)
- _addLiquidity(liqToken,liqBNB) (#1241)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- Address.verifyCall(newLiq) (#1243)
External calls sending eth:
- _addLiquidity(liqToken,liqBNB) (#1241)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
State variables written after the call(s):
- _distributeStake(distributeBNB,true) (#1245)
- buybackBalance += buybackSplit (#1160)
- _distributeStake(distributeBNB,true) (#1245)
- devBalance += devSplit (#1159)
- _distributeStake(distributeBNB,true) (#1245)
- lotteryBalance += lotterySplit (#1161)
- _distributeStake(distributeBNB,true) (#1245)
- mainRewardShare += ((mainAmount * DISTRIBUTION_MULTI) / totalShares) (#1169)
- _distributeStake(distributeBNB,true) (#1245)
- marketingBalance += marketingSplit (#1158)
- marketingBalance += stakingSplit (#1167)
- _distributeStake(distributeBNB,true) (#1245)
- miscRewardShare += ((miscAmount * DISTRIBUTION_MULTI) / totalShares) (#1170)
- _distributeStake(distributeBNB,true) (#1245)
- totalRewards += stakingSplit (#1164)
Reentrancy in SirenHead._taxedTransfer(address,address,uint256,bool,bool) (#1262-1335):
External calls:
- _swapContractToken(swapThreshold,false) (#1314)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
- _pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount,0,path,address(this),block.timestamp) (#1253-1259)
- Address.verifyCall(newLiq) (#1243)
External calls sending eth:
- _swapContractToken(swapThreshold,false) (#1314)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
State variables written after the call(s):
- _removeToken(sender,amount) (#1330)
- alreadyPaidMain[addr] = mainRewardShare * newAmount (#1194)
- _addToken(address(this),contractToken) (#1331)
- alreadyPaidMain[addr] = mainRewardShare * newAmount (#1143)
- _addToken(recipient,receiveAmount) (#1333)
- alreadyPaidMain[addr] = mainRewardShare * newAmount (#1143)
- _removeToken(sender,amount) (#1330)
- alreadyPaidMisc[addr] = miscRewardShare * newAmount (#1196)
- _addToken(address(this),contractToken) (#1331)
- alreadyPaidMisc[addr] = miscRewardShare * newAmount (#1145)
- _addToken(recipient,receiveAmount) (#1333)
- alreadyPaidMisc[addr] = miscRewardShare * newAmount (#1145)
- _removeToken(sender,amount) (#1330)
- toBePaidMain[addr] += mainPayment (#1195)
- _addToken(address(this),contractToken) (#1331)
- toBePaidMain[addr] += mainPayment (#1144)
- _addToken(recipient,receiveAmount) (#1333)
- toBePaidMain[addr] += mainPayment (#1144)
- _removeToken(sender,amount) (#1330)
- toBePaidMisc[addr] += miscPayment (#1197)
- _addToken(address(this),contractToken) (#1331)
- toBePaidMisc[addr] += miscPayment (#1146)
- _addToken(recipient,receiveAmount) (#1333)
- toBePaidMisc[addr] += miscPayment (#1146)
Reentrancy in SirenHead.constructor() (#579-632):
External calls:
- _pancakePairAddress = IPancakeFactory(_pancakeRouter.factory()).createPair(address(this),_pancakeRouter.WETH()) (#587-589)
State variables written after the call(s):
- _allowances[address(this)][address(_pancakeRouter)] = type()(uint256).max (#592)
- _approve(address(this),address(_pancakeRouter),type()(uint256).max) (#631)
- _allowances[owner][spender] = amount (#669)
- _addToken(msg.sender,INITIAL_SUPPLY) (#590)
- _balances[addr] = newAmount (#1136)
- _balances[addr] = newAmount (#1142)
- _balances[addr] = newAmount (#1147)
- _circulatingSupply = INITIAL_SUPPLY (#609)
- _limits = BalanceLimits(INITIAL_SUPPLY * INITIAL_MAX_WALLET / INITIAL_MAX_DIVISOR,INITIAL_SUPPLY * INITIAL_MAX_SELL / INITIAL_MAX_DIVISOR,INITIAL_SUPPLY * INITIAL_MAX_BUY / INITIAL_MAX_DIVISOR,INITIAL_MAX_WALLET,INITIAL_MAX_SELL,INITIAL_MAX_BUY,INITIAL_MAX_DIVISOR) (#611-619)
- _taxWallet.marketing = msg.sender (#595)
- _taxWallet.dev = msg.sender (#596)
- _taxWallet.lottery = msg.sender (#597)
- _addToken(msg.sender,INITIAL_SUPPLY) (#590)
- _totalShares += amount (#1139)
- _addToken(msg.sender,INITIAL_SUPPLY) (#590)
- alreadyPaidMain[addr] = mainRewardShare * newAmount (#1143)
- _addToken(msg.sender,INITIAL_SUPPLY) (#590)
- alreadyPaidMisc[addr] = miscRewardShare * newAmount (#1145)
- _addToken(msg.sender,INITIAL_SUPPLY) (#590)
- toBePaidMain[addr] += mainPayment (#1144)
- _addToken(msg.sender,INITIAL_SUPPLY) (#590)
- toBePaidMisc[addr] += miscPayment (#1146)
- totalSwapRatio = totalTaxRatio - _taxRatios.burn (#607)
- totalTaxRatio = _taxRatios.burn + _taxRatios.buyback + _taxRatios.dev + _taxRatios.liquidity + _taxRatios.lottery + _taxRatios.marketing + _taxRatios.rewards (#599-605)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in SirenHead._swapContractToken(uint16,bool) (#1205-1246):
External calls:
- _swapTokenForBNB(swapToken) (#1237)
- _pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount,0,path,address(this),block.timestamp) (#1253-1259)
- _addLiquidity(liqToken,liqBNB) (#1241)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
External calls sending eth:
- _addLiquidity(liqToken,liqBNB) (#1241)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#670)
- _addLiquidity(liqToken,liqBNB) (#1241)
Reentrancy in SirenHead._taxedTransfer(address,address,uint256,bool,bool) (#1262-1335):
External calls:
- _swapContractToken(swapThreshold,false) (#1314)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
- _pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount,0,path,address(this),block.timestamp) (#1253-1259)
- Address.verifyCall(newLiq) (#1243)
External calls sending eth:
- _swapContractToken(swapThreshold,false) (#1314)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
Event emitted after the call(s):
- Transfer(sender,recipient,receiveAmount) (#1334)
Reentrancy in SirenHead.claimBNBTo(address,address,uint256,bool) (#1438-1448):
External calls:
- _sendBnb(to,amountWei) (#1445)
- (sent) = account.call{value: (amount)}() (#1201)
Event emitted after the call(s):
- ClaimBNB(from,to,amountWei) (#1447)
Reentrancy in SirenHead.claimToken(address,address,uint256,bool) (#1390-1436):
External calls:
- _pancakeRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,addr,block.timestamp) (#1428-1432)
Event emitted after the call(s):
- ClaimToken(amount,token,addr) (#1434)
Reentrancy in SirenHead.constructor() (#579-632):
External calls:
- _pancakePairAddress = IPancakeFactory(_pancakeRouter.factory()).createPair(address(this),_pancakeRouter.WETH()) (#587-589)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#670)
- _approve(address(this),address(_pancakeRouter),type()(uint256).max) (#631)
- Transfer(address(0),msg.sender,INITIAL_SUPPLY) (#591)
Reentrancy in SirenHead.transferFrom(address,address,uint256) (#695-703):
External calls:
- _transfer(sender,recipient,amount) (#696)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (sent) = account.call{value: (amount)}() (#1201)
- (success) = address(verification).call{value: amount}() (#231)
- _pancakeRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amount,0,path,address(this),block.timestamp) (#1253-1259)
- _pancakeRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,addr,block.timestamp) (#1428-1432)
- Address.verifyCall(newLiq) (#1243)
External calls sending eth:
- _transfer(sender,recipient,amount) (#696)
- (sent) = account.call{value: (amount)}() (#1201)
- _pancakeRouter.addLiquidityETH{value: bnbAmount}(address(this),tokenamount,0,0,address(this),block.timestamp) (#1122-1129)
- (success) = address(verification).call{value: amount}() (#231)
- _pancakeRouter.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0,path,addr,block.timestamp) (#1428-1432)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#670)
- _approve(sender,msg.sender,currentAllowance - amount) (#701)
Apply the check-effects-interactions pattern.

Additional information: link

SirenHead.recoverBNB() (#970-974) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp >= _liquidityUnlockTime,Not yet unlocked) (#971)
SirenHead.releaseLP() (#986-991) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp >= _liquidityUnlockTime,Not yet unlocked) (#987)
SirenHead.removeLP() (#994-1009) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp >= _liquidityUnlockTime,Not yet unlocked) (#995)
SirenHead.getLiquidityUnlockInSeconds() (#1068-1073) uses timestamp for comparisons
Dangerous comparisons:
- block.timestamp < _liquidityUnlockTime (#1069)
SirenHead.setUnlockTime(uint256) (#1510-1514) uses timestamp for comparisons
Dangerous comparisons:
- require(bool)(newUnlockTime > _liquidityUnlockTime) (#1512)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#221-225) uses assembly
- INLINE ASM (#223)
Address._verifyCallResult(bool,bytes,string) (#280-293) uses assembly
- INLINE ASM (#285-288)
Do not use evm assembly.

Additional information: link

SirenHead.excludeAccountFromFees(address,bool) (#772-778) compares to a boolean constant:
-exclude == true (#773)
Remove the equality to the boolean constant.

Additional information: link

Function IPancakeERC20.DOMAIN_SEPARATOR() (#33) is not in mixedCase
Function IPancakeERC20.PERMIT_TYPEHASH() (#34) is not in mixedCase
Function IPancakeRouter01.WETH() (#137) is not in mixedCase
Parameter SirenHead.allowance(address,address)._owner (#656) is not in mixedCase
Function SirenHead.BurnTokens(uint256) (#709-711) is not in mixedCase
Function SirenHead.ClaimMainReward() (#713-718) is not in mixedCase
Function SirenHead.ClaimMiscReward(address) (#720-725) is not in mixedCase
Function SirenHead.IncludeMeToStaking() (#727-734) is not in mixedCase
Variable SirenHead._taxRates (#472-476) is not in mixedCase
Variable SirenHead._taxRatios (#478-486) is not in mixedCase
Variable SirenHead._taxWallet (#488) is not in mixedCase
Variable SirenHead._limits (#489) is not in mixedCase
Variable SirenHead._pancakePairAddress (#529) is not in mixedCase
Variable SirenHead.PancakeRouter (#531) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Variable IPancakeRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#57) is too similar to IPancakeRouter01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#58)
Variable SirenHead.BLACKLIST_BLOCKS (#499) is too similar to SirenHead.getBlacklistInfo()._blacklistBlocks (#1039)
Prevent variables from having similar names.

Additional information: link

SirenHead.slitherConstructorConstantVariables() (#414-1531) uses literals with too many digits:
- INITIAL_SUPPLY = 10000000 * 10 ** TOKEN_DECIMALS (#428)
SirenHead.slitherConstructorConstantVariables() (#414-1531) uses literals with too many digits:
- BURN_ADDRESS = 0x000000000000000000000000000000000000dEaD (#436)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#207-210)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#212-216)
BurnTokens(uint256) should be declared external:
- SirenHead.BurnTokens(uint256) (#709-711)
ClaimMainReward() should be declared external:
- SirenHead.ClaimMainReward() (#713-718)
ClaimMiscReward(address) should be declared external:
- SirenHead.ClaimMiscReward(address) (#720-725)
IncludeMeToStaking() should be declared external:
- SirenHead.IncludeMeToStaking() (#727-734)
awardLottery(address,uint256) should be declared external:
- SirenHead.awardLottery(address,uint256) (#738-742)
changeMainReward(address) should be declared external:
- SirenHead.changeMainReward(address) (#744-747)
createLPandBNB(uint16,bool) should be declared external:
- SirenHead.createLPandBNB(uint16,bool) (#749-751)
enableBlacklist(bool) should be declared external:
- SirenHead.enableBlacklist(bool) (#753-756)
enableWhitelist(bool) should be declared external:
- SirenHead.enableWhitelist(bool) (#758-761)
dynamicSettings(bool,bool,bool,bool) should be declared external:
- SirenHead.dynamicSettings(bool,bool,bool,bool) (#764-770)
excludeAccountFromFees(address,bool) should be declared external:
- SirenHead.excludeAccountFromFees(address,bool) (#772-778)
excludeFromStaking(address) should be declared external:
- SirenHead.excludeFromStaking(address) (#780-791)
includeToStaking(address) should be declared external:
- SirenHead.includeToStaking(address) (#793-800)
enableManualSwap(bool) should be declared external:
- SirenHead.enableManualSwap(bool) (#802-805)
sameBlockRevert(bool) should be declared external:
- SirenHead.sameBlockRevert(bool) (#807-809)
setPresale(address) should be declared external:
- SirenHead.setPresale(address) (#811-814)
setBlacklistStatus(address[],bool) should be declared external:
- SirenHead.setBlacklistStatus(address[],bool) (#816-820)
setWhitelistStatus(address[],bool) should be declared external:
- SirenHead.setWhitelistStatus(address[],bool) (#822-826)
triggerBuyback(uint256) should be declared external:
- SirenHead.triggerBuyback(uint256) (#830-843)
triggerExternalBuyback(uint256,address) should be declared external:
- SirenHead.triggerExternalBuyback(uint256,address) (#845-858)
updateLimits(uint16,uint16,uint16,uint16,bool) should be declared external:
- SirenHead.updateLimits(uint16,uint16,uint16,uint16,bool) (#860-881)
updateRatios(uint8,uint8,uint8,uint8,uint8,uint8,uint8) should be declared external:
- SirenHead.updateRatios(uint8,uint8,uint8,uint8,uint8,uint8,uint8) (#883-909)
updateRewardSplit(uint8,uint8) should be declared external:
- SirenHead.updateRewardSplit(uint8,uint8) (#911-917)
updateSwapThreshold(uint16) should be declared external:
- SirenHead.updateSwapThreshold(uint16) (#919-924)
updateTargetLiquidity(uint16) should be declared external:
- SirenHead.updateTargetLiquidity(uint16) (#926-929)
updateTax(uint8,uint8,uint8) should be declared external:
- SirenHead.updateTax(uint8,uint8,uint8) (#931-937)
withdrawMarketing() should be declared external:
- SirenHead.withdrawMarketing() (#940-944)
withdrawLottery() should be declared external:
- SirenHead.withdrawLottery() (#947-951)
withdrawDev() should be declared external:
- SirenHead.withdrawDev() (#954-958)
lockLiquidityTokens(uint256) should be declared external:
- SirenHead.lockLiquidityTokens(uint256) (#965-968)
recoverBNB() should be declared external:
- SirenHead.recoverBNB() (#970-974)
recoverMiscToken(address) should be declared external:
- SirenHead.recoverMiscToken(address) (#978-983)
releaseLP() should be declared external:
- SirenHead.releaseLP() (#986-991)
removeLP() should be declared external:
- SirenHead.removeLP() (#994-1009)
setDevWallet(address) should be declared external:
- SirenHead.setDevWallet(address) (#1011-1017)
setLotteryWallet(address) should be declared external:
- SirenHead.setLotteryWallet(address) (#1019-1025)
setMarketingWallet(address) should be declared external:
- SirenHead.setMarketingWallet(address) (#1027-1033)
getBlacklistInfo() should be declared external:
- SirenHead.getBlacklistInfo() (#1037-1045)
getWhitelistinfo() should be declared external:
- SirenHead.getWhitelistinfo() (#1047-1051)
getDynamicInfo() should be declared external:
- SirenHead.getDynamicInfo() (#1053-1061)
getLiquidityUnlockInSeconds() should be declared external:
- SirenHead.getLiquidityUnlockInSeconds() (#1068-1073)
getMainBalance(address) should be declared external:
- SirenHead.getMainBalance(address) (#1075-1078)
getMiscBalance(address) should be declared external:
- SirenHead.getMiscBalance(address) (#1080-1083)
getSupplyInfo() should be declared external:
- SirenHead.getSupplyInfo() (#1085-1088)
getWithdrawBalances() should be declared external:
- SirenHead.getWithdrawBalances() (#1090-1092)
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 find token/project description on the website or on BscScan, CoinMarketCap

Unable to find token contract audit

Unable to find audit link on the website

Unable to find whitepaper link on the website

Unable to find Twitter link on the website

Unable to find token on CoinGecko

Additional information: link

Unable to find token on CoinMarketCap

Additional information: link

Unable to find token on CoinHunt

Additional information: link

Unable to find code repository for the project

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