MTX [MetaMatrix] Token

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

MetaMatrix.addLiquidity(uint256,uint256) (#1353-1367) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in MetaMatrix._transfer(address,address,uint256) (#1227-1334):
External calls:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1379-1385)
External calls sending eth:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
State variables written after the call(s):
- tokensForLpInContract = 0 (#1276)
Reentrancy in MetaMatrix._transfer(address,address,uint256) (#1227-1334):
External calls:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1379-1385)
- swapAndSendBusdDividends(busdTokens) (#1281)
- success = IERC20(dividendToken).transfer(dividendTracker,amount) (#1419)
- dividendPayingTracker.distributeDividends(amount) (#1422)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(_tokenAmount,0,path,_recipient,block.timestamp) (#1398-1404)
External calls sending eth:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
State variables written after the call(s):
- super._transfer(from,address(this),fees) (#1314)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#145)
- _balances[recipient] = _balances[recipient].add(amount) (#146)
- super._transfer(address(this),marketingWallet,tmpMarketingRewardPercent) (#1315)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#145)
- _balances[recipient] = _balances[recipient].add(amount) (#146)
- super._transfer(from,to,amount) (#1318)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#145)
- _balances[recipient] = _balances[recipient].add(amount) (#146)
- busdDividedRewardsInContract = 0 (#1282)
- busdDividedRewardsInContract = busdDividedRewardsInContract.add(tmpBusdDividedRewardsInContract) (#1305)
- swapping = false (#1286)
- tokensForLpInContract = tokensForLpInContract.add(tmpLpRewardInContract) (#1307)
Apply the check-effects-interactions pattern.

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.

Contract ownership is not renounced (belongs to a wallet)

DividendPayingToken._withdrawDividendOfUser(address) (#265-281) has external calls inside a loop: success = IERC20(dividendToken).transfer(user,_withdrawableDividend) (#270)
Favor pull over push strategy for external calls.

Additional information: link

MetaMatrix._transfer(address,address,uint256) (#1227-1334) performs a multiplication on the result of a division:
-fees = fees.div(100).mul(sellFeeIncreaseFactor) (#1310)
Consider ordering multiplication before division.

Additional information: link

Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (#265-281):
External calls:
- success = IERC20(dividendToken).transfer(user,_withdrawableDividend) (#270)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (#273)
Reentrancy in MetaMatrix.updatebusdDividendTracker(address) (#1081-1096):
External calls:
- newbusdDividendTracker.excludeFromDividends(address(newbusdDividendTracker)) (#1088)
- newbusdDividendTracker.excludeFromDividends(address(this)) (#1089)
- newbusdDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1090)
- newbusdDividendTracker.excludeFromDividends(address(deadAddress)) (#1091)
State variables written after the call(s):
- busdDividendTracker = newbusdDividendTracker (#1095)
Apply the check-effects-interactions pattern.

Additional information: link

MetaMatrix._transfer(address,address,uint256).lastProcessedIndex (#1327) is a local variable never initialized
MetaMatrix._transfer(address,address,uint256).claims (#1327) is a local variable never initialized
MetaMatrix._transfer(address,address,uint256).iterations (#1327) 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

MetaMatrix.claim() (#1212-1215) ignores return value by busdDividendTracker.processAccount(address(msg.sender),false) (#1213)
MetaMatrix._transfer(address,address,uint256) (#1227-1334) ignores return value by busdDividendTracker.process(gas) (#1327-1332)
MetaMatrix.addLiquidity(uint256,uint256) (#1353-1367) ignores return value by uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
Ensure that all the return values of the function calls are used.

Additional information: link

DividendPayingToken.constructor(string,string,address)._name (#234) shadows:
- ERC20._name (#79) (state variable)
DividendPayingToken.constructor(string,string,address)._symbol (#234) shadows:
- ERC20._symbol (#80) (state variable)
DividendPayingToken.dividendOf(address)._owner (#284) shadows:
- Ownable._owner (#21) (state variable)
DividendPayingToken.withdrawableDividendOf(address)._owner (#288) shadows:
- Ownable._owner (#21) (state variable)
DividendPayingToken.withdrawnDividendOf(address)._owner (#292) shadows:
- Ownable._owner (#21) (state variable)
DividendPayingToken.accumulativeDividendOf(address)._owner (#297) shadows:
- Ownable._owner (#21) (state variable)
Rename the local variables that shadow another component.

Additional information: link

MetaMatrix.setWalletBalance(uint256) (#993-995) should emit an event for:
- maxWalletBalance = _maxWalletBalance (#994)
MetaMatrix.setMaxBuyTransaction(uint256) (#997-999) should emit an event for:
- maxBuyTranscationAmount = _maxTxn * (10 ** 18) (#998)
MetaMatrix.setMaxSellTransaction(uint256) (#1001-1003) should emit an event for:
- maxSellTransactionAmount = _maxTxn * (10 ** 18) (#1002)
MetaMatrix.setSwapTokensAtAmount(uint256) (#1018-1020) should emit an event for:
- swapTokensAtAmount = _swapAmount * (10 ** 18) (#1019)
MetaMatrix.setSellTransactionMultiplier(uint256) (#1022-1024) should emit an event for:
- sellFeeIncreaseFactor = _multiplier (#1023)
Emit an event for critical parameter changes.

Additional information: link

DividendPayingToken.constructor(string,string,address)._token (#234) lacks a zero-check on :
- dividendToken = _token (#235)
BUSDDividendTracker.setDividendTokenAddress(address).newToken (#667) lacks a zero-check on :
- dividendToken = newToken (#668)
MetaMatrix.updateBusdDividendToken(address)._newContract (#1006) lacks a zero-check on :
- busdDividendToken = _newContract (#1007)
Check that the address is not zero.

Additional information: link

Variable 'MetaMatrix._transfer(address,address,uint256).iterations (#1327)' in MetaMatrix._transfer(address,address,uint256) (#1227-1334) potentially used before declaration: ProcessedbusdDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1328)
Variable 'MetaMatrix._transfer(address,address,uint256).lastProcessedIndex (#1327)' in MetaMatrix._transfer(address,address,uint256) (#1227-1334) potentially used before declaration: ProcessedbusdDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1328)
Variable 'MetaMatrix._transfer(address,address,uint256).claims (#1327)' in MetaMatrix._transfer(address,address,uint256) (#1227-1334) potentially used before declaration: ProcessedbusdDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1328)
Move all variable declarations prior to any usage of the variable, and ensure that reaching a variable declaration does not depend on some conditional if it is used unconditionally.

Additional information: link

Reentrancy in MetaMatrix._transfer(address,address,uint256) (#1227-1334):
External calls:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1379-1385)
- swapAndSendBusdDividends(busdTokens) (#1281)
- success = IERC20(dividendToken).transfer(dividendTracker,amount) (#1419)
- dividendPayingTracker.distributeDividends(amount) (#1422)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(_tokenAmount,0,path,_recipient,block.timestamp) (#1398-1404)
External calls sending eth:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
State variables written after the call(s):
- swapAndSendBusdDividends(busdTokens) (#1281)
- _allowances[owner][spender] = amount (#174)
Reentrancy in MetaMatrix.constructor() (#947-982):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#956-957)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (#960)
- uniswapV2Router = _uniswapV2Router (#959)
Reentrancy in MetaMatrix.constructor() (#947-982):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#956-957)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#962)
- busdDividendTracker.excludeFromDividends(pair) (#1127)
- excludeFromDividend(address(busdDividendTracker)) (#964)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(this)) (#965)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(_uniswapV2Router)) (#966)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(deadAddress) (#967)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
State variables written after the call(s):
- excludeFromFees(marketingWallet,true) (#970)
- isExcludedFromFees[account] = excluded (#1106)
- excludeFromFees(address(this),true) (#971)
- isExcludedFromFees[account] = excluded (#1106)
- excludeFromFees(deadAddress,true) (#972)
- isExcludedFromFees[account] = excluded (#1106)
- excludeFromFees(owner(),true) (#973)
- isExcludedFromFees[account] = excluded (#1106)
Reentrancy in MetaMatrix.constructor() (#947-982):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#956-957)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#962)
- busdDividendTracker.excludeFromDividends(pair) (#1127)
- excludeFromDividend(address(busdDividendTracker)) (#964)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(this)) (#965)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(_uniswapV2Router)) (#966)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(deadAddress) (#967)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- setAuthOnDividends(owner()) (#975)
- busdDividendTracker.setAuth(account) (#1032)
State variables written after the call(s):
- _mint(owner(),1000000000000000 * (10 ** 18)) (#981)
- _balances[account] = _balances[account].add(amount) (#156)
- _mint(owner(),1000000000000000 * (10 ** 18)) (#981)
- _totalSupply = _totalSupply.add(amount) (#155)
Reentrancy in MetaMatrix.prepareForPartherOrExchangeListing(address) (#988-991):
External calls:
- busdDividendTracker.excludeFromDividends(_partnerOrExchangeAddress) (#989)
State variables written after the call(s):
- excludeFromFees(_partnerOrExchangeAddress,true) (#990)
- isExcludedFromFees[account] = excluded (#1106)
Reentrancy in BUSDDividendTracker.processAccount(address,bool) (#838-848):
External calls:
- amount = _withdrawDividendOfUser(account) (#839)
- success = IERC20(dividendToken).transfer(user,_withdrawableDividend) (#270)
State variables written after the call(s):
- lastClaimTimes[account] = block.timestamp (#842)
Reentrancy in MetaMatrix.swapAndLiquify(uint256) (#1337-1351):
External calls:
- swapTokensForBNB(half) (#1344)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1379-1385)
- addLiquidity(otherHalf,newBalance) (#1348)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1348)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1348)
- _allowances[owner][spender] = amount (#174)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in MetaMatrix._setAutomatedMarketMakerPair(address,bool) (#1122-1132):
External calls:
- busdDividendTracker.excludeFromDividends(pair) (#1127)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (#1131)
Reentrancy in MetaMatrix._transfer(address,address,uint256) (#1227-1334):
External calls:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1379-1385)
- swapAndSendBusdDividends(busdTokens) (#1281)
- success = IERC20(dividendToken).transfer(dividendTracker,amount) (#1419)
- dividendPayingTracker.distributeDividends(amount) (#1422)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(_tokenAmount,0,path,_recipient,block.timestamp) (#1398-1404)
External calls sending eth:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#175)
- swapAndSendBusdDividends(busdTokens) (#1281)
- SendDividends(amount) (#1423)
- swapAndSendBusdDividends(busdTokens) (#1281)
- Transfer(sender,recipient,amount) (#147)
- super._transfer(address(this),marketingWallet,tmpMarketingRewardPercent) (#1315)
- Transfer(sender,recipient,amount) (#147)
- super._transfer(from,address(this),fees) (#1314)
- Transfer(sender,recipient,amount) (#147)
- super._transfer(from,to,amount) (#1318)
Reentrancy in MetaMatrix._transfer(address,address,uint256) (#1227-1334):
External calls:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1379-1385)
- swapAndSendBusdDividends(busdTokens) (#1281)
- success = IERC20(dividendToken).transfer(dividendTracker,amount) (#1419)
- dividendPayingTracker.distributeDividends(amount) (#1422)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(_tokenAmount,0,path,_recipient,block.timestamp) (#1398-1404)
- busdDividendTracker.setBalance(address(from),balanceOf(from)) (#1320)
- busdDividendTracker.setBalance(address(to),balanceOf(to)) (#1322)
- busdDividendTracker.process(gas) (#1327-1332)
External calls sending eth:
- swapAndLiquify(liqTokens) (#1275)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
Event emitted after the call(s):
- ProcessedbusdDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1328)
Reentrancy in MetaMatrix.constructor() (#947-982):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#956-957)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#962)
- busdDividendTracker.excludeFromDividends(pair) (#1127)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (#1131)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#962)
Reentrancy in MetaMatrix.constructor() (#947-982):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#956-957)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#962)
- busdDividendTracker.excludeFromDividends(pair) (#1127)
- excludeFromDividend(address(busdDividendTracker)) (#964)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(this)) (#965)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(_uniswapV2Router)) (#966)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(deadAddress) (#967)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
Event emitted after the call(s):
- ExcludeFromFees(account,excluded) (#1108)
- excludeFromFees(marketingWallet,true) (#970)
- ExcludeFromFees(account,excluded) (#1108)
- excludeFromFees(owner(),true) (#973)
- ExcludeFromFees(account,excluded) (#1108)
- excludeFromFees(deadAddress,true) (#972)
- ExcludeFromFees(account,excluded) (#1108)
- excludeFromFees(address(this),true) (#971)
Reentrancy in MetaMatrix.constructor() (#947-982):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#956-957)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#962)
- busdDividendTracker.excludeFromDividends(pair) (#1127)
- excludeFromDividend(address(busdDividendTracker)) (#964)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(this)) (#965)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(address(_uniswapV2Router)) (#966)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- excludeFromDividend(deadAddress) (#967)
- busdDividendTracker.excludeFromDividends(address(account)) (#1112)
- setAuthOnDividends(owner()) (#975)
- busdDividendTracker.setAuth(account) (#1032)
Event emitted after the call(s):
- Transfer(address(0),account,amount) (#157)
- _mint(owner(),1000000000000000 * (10 ** 18)) (#981)
Reentrancy in MetaMatrix.prepareForPartherOrExchangeListing(address) (#988-991):
External calls:
- busdDividendTracker.excludeFromDividends(_partnerOrExchangeAddress) (#989)
Event emitted after the call(s):
- ExcludeFromFees(account,excluded) (#1108)
- excludeFromFees(_partnerOrExchangeAddress,true) (#990)
Reentrancy in BUSDDividendTracker.processAccount(address,bool) (#838-848):
External calls:
- amount = _withdrawDividendOfUser(account) (#839)
- success = IERC20(dividendToken).transfer(user,_withdrawableDividend) (#270)
Event emitted after the call(s):
- Claim(account,amount,automatic) (#843)
Reentrancy in MetaMatrix.processDividendTracker(uint256) (#1205-1210):
External calls:
- (busdIterations,busdClaims,busdLastProcessedIndex) = busdDividendTracker.process(gas) (#1206)
Event emitted after the call(s):
- ProcessedbusdDividendTracker(busdIterations,busdClaims,busdLastProcessedIndex,false,gas,tx.origin) (#1207)
Reentrancy in MetaMatrix.swapAndLiquify(uint256) (#1337-1351):
External calls:
- swapTokensForBNB(half) (#1344)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1379-1385)
- addLiquidity(otherHalf,newBalance) (#1348)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1348)
- uniswapV2Router.addLiquidityETH{value: bnbAmount}(address(this),tokenAmount,0,0,marketingWallet,block.timestamp) (#1359-1366)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#175)
- addLiquidity(otherHalf,newBalance) (#1348)
- SwapAndLiquify(half,newBalance,otherHalf) (#1350)
Reentrancy in MetaMatrix.swapAndSendBusdDividends(uint256) (#1407-1411):
External calls:
- swapTokensForDividendToken(tokens,address(this),busdDividendToken) (#1408)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(_tokenAmount,0,path,_recipient,block.timestamp) (#1398-1404)
- transferDividends(busdDividendToken,address(busdDividendTracker),busdDividendTracker,busdDividends) (#1410)
- success = IERC20(dividendToken).transfer(dividendTracker,amount) (#1419)
- dividendPayingTracker.distributeDividends(amount) (#1422)
Event emitted after the call(s):
- SendDividends(amount) (#1423)
- transferDividends(busdDividendToken,address(busdDividendTracker),busdDividendTracker,busdDividends) (#1410)
Reentrancy in MetaMatrix.transferDividends(address,address,DividendPayingToken,uint256) (#1418-1425):
External calls:
- success = IERC20(dividendToken).transfer(dividendTracker,amount) (#1419)
- dividendPayingTracker.distributeDividends(amount) (#1422)
Event emitted after the call(s):
- SendDividends(amount) (#1423)
Reentrancy in MetaMatrix.updatebusdDividendTracker(address) (#1081-1096):
External calls:
- newbusdDividendTracker.excludeFromDividends(address(newbusdDividendTracker)) (#1088)
- newbusdDividendTracker.excludeFromDividends(address(this)) (#1089)
- newbusdDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1090)
- newbusdDividendTracker.excludeFromDividends(address(deadAddress)) (#1091)
Event emitted after the call(s):
- UpdatebusdDividendTracker(newAddress,address(busdDividendTracker)) (#1093)
Apply the check-effects-interactions pattern.

Additional information: link

BUSDDividendTracker.getAccount(address) (#702-745) uses timestamp for comparisons
Dangerous comparisons:
- nextClaimTime > block.timestamp (#742-744)
BUSDDividendTracker.canAutoClaim(uint256) (#766-772) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (#767)
- block.timestamp.sub(lastClaimTime) >= claimWait (#771)
Avoid relying on block.timestamp.

Additional information: link

MetaMatrix.setBusdDividendEnabled(bool) (#1035-1048) compares to a boolean constant:
-_enabled == true (#1041)
MetaMatrix.setBusdDividendEnabled(bool) (#1035-1048) compares to a boolean constant:
-_enabled == false (#1037)
MetaMatrix.setMarketingEnabled(bool) (#1050-1063) compares to a boolean constant:
-_enabled == true (#1056)
MetaMatrix.setMarketingEnabled(bool) (#1050-1063) compares to a boolean constant:
-_enabled == false (#1052)
MetaMatrix.setSwapAndLiquifyEnabled(bool) (#1065-1078) compares to a boolean constant:
-_enabled == false (#1067)
MetaMatrix.setSwapAndLiquifyEnabled(bool) (#1065-1078) compares to a boolean constant:
-_enabled == true (#1071)
Remove the equality to the boolean constant.

Additional information: link

Context._msgData() (#14-17) is never used and should be removed
DividendPayingToken._transfer(address,address,uint256) (#302-308) is never used and should be removed
ERC20._setupDecimals(uint8) (#178-180) is never used and should be removed
MetaMatrix.transferToWallet(address,uint256) (#1414-1416) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#573-576) is never used and should be removed
SafeMath.mod(uint256,uint256) (#563-566) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#578-581) is never used and should be removed
SafeMath.tryAdd(uint256,uint256) (#509-513) is never used and should be removed
SafeMath.tryDiv(uint256,uint256) (#530-533) is never used and should be removed
SafeMath.tryMod(uint256,uint256) (#535-538) is never used and should be removed
SafeMath.tryMul(uint256,uint256) (#520-528) is never used and should be removed
SafeMath.trySub(uint256,uint256) (#515-518) is never used and should be removed
SafeMathInt.div(int256,int256) (#595-601) is never used and should be removed
SafeMathInt.mul(int256,int256) (#585-593) is never used and should be removed
Remove unused functions.

Additional information: link

MetaMatrix.totalFees (#885) is set pre-construction with a non-constant function or state variable:
- busdDividendRewardsFee.add(marketingFee).add(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

Parameter DividendPayingToken.dividendOf(address)._owner (#284) is not in mixedCase
Parameter DividendPayingToken.withdrawableDividendOf(address)._owner (#288) is not in mixedCase
Parameter DividendPayingToken.withdrawnDividendOf(address)._owner (#292) is not in mixedCase
Parameter DividendPayingToken.accumulativeDividendOf(address)._owner (#297) is not in mixedCase
Constant DividendPayingToken.magnitude (#215) is not in UPPER_CASE_WITH_UNDERSCORES
Variable DividendPayingToken._isAuth (#225) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#372) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#373) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#390) is not in mixedCase
Function IUniswapV2Router01.WETH() (#410) is not in mixedCase
Parameter BUSDDividendTracker.updateMinimumTokenBalanceForDividends(uint256)._newMinimumBalance (#671) is not in mixedCase
Parameter BUSDDividendTracker.getAccount(address)._account (#702) is not in mixedCase
Parameter MetaMatrix.prepareForPartherOrExchangeListing(address)._partnerOrExchangeAddress (#988) is not in mixedCase
Parameter MetaMatrix.setWalletBalance(uint256)._maxWalletBalance (#993) is not in mixedCase
Parameter MetaMatrix.setMaxBuyTransaction(uint256)._maxTxn (#997) is not in mixedCase
Parameter MetaMatrix.setMaxSellTransaction(uint256)._maxTxn (#1001) is not in mixedCase
Parameter MetaMatrix.updateBusdDividendToken(address)._newContract (#1006) is not in mixedCase
Parameter MetaMatrix.updateMarketingWallet(address)._newWallet (#1011) is not in mixedCase
Parameter MetaMatrix.setSwapTokensAtAmount(uint256)._swapAmount (#1018) is not in mixedCase
Parameter MetaMatrix.setSellTransactionMultiplier(uint256)._multiplier (#1022) is not in mixedCase
Parameter MetaMatrix.setTradingIsEnabled(bool)._enabled (#1027) is not in mixedCase
Parameter MetaMatrix.setBusdDividendEnabled(bool)._enabled (#1035) is not in mixedCase
Parameter MetaMatrix.setMarketingEnabled(bool)._enabled (#1050) is not in mixedCase
Parameter MetaMatrix.setSwapAndLiquifyEnabled(bool)._enabled (#1065) is not in mixedCase
Parameter MetaMatrix.swapTokensForDividendToken(uint256,address,address)._tokenAmount (#1389) is not in mixedCase
Parameter MetaMatrix.swapTokensForDividendToken(uint256,address,address)._recipient (#1389) is not in mixedCase
Parameter MetaMatrix.swapTokensForDividendToken(uint256,address,address)._dividendAddress (#1389) is not in mixedCase
Variable MetaMatrix._busdDividendRewardsFeeBuy (#887) is not in mixedCase
Variable MetaMatrix._marketingFeeBuy (#888) is not in mixedCase
Variable MetaMatrix._LpFeeBuy (#889) is not in mixedCase
Variable MetaMatrix._busdDividendRewardsFeeSell (#891) is not in mixedCase
Variable MetaMatrix._LpFeeSell (#892) is not in mixedCase
Variable MetaMatrix._marketingFeeSell (#893) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#15)" inContext (#9-18)
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 (#412) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#412)
Variable DividendPayingToken._withdrawDividendOfUser(address)._withdrawableDividend (#266) is too similar to BUSDDividendTracker.getAccount(address).withdrawableDividends (#707)
Prevent variables from having similar names.

Additional information: link

BUSDDividendTracker.constructor(address) (#654-657) uses literals with too many digits:
- minimumTokenBalanceForDividends = 3000000000 * (10 ** 18) (#656)
BUSDDividendTracker.getAccountAtIndex(uint256) (#747-764) uses literals with too many digits:
- (0x0000000000000000000000000000000000000000,- 1,- 1,0,0,0,0,0) (#758)
MetaMatrix.constructor() (#947-982) uses literals with too many digits:
- _mint(owner(),1000000000000000 * (10 ** 18)) (#981)
MetaMatrix.slitherConstructorVariables() (#851-1427) uses literals with too many digits:
- deadAddress = 0x000000000000000000000000000000000000dEaD (#858)
MetaMatrix.slitherConstructorVariables() (#851-1427) uses literals with too many digits:
- maxBuyTranscationAmount = 10000000000000 * (10 ** 18) (#871)
MetaMatrix.slitherConstructorVariables() (#851-1427) uses literals with too many digits:
- maxSellTransactionAmount = 1000000000000 * (10 ** 18) (#872)
MetaMatrix.slitherConstructorVariables() (#851-1427) uses literals with too many digits:
- maxWalletBalance = 1000000000000000 * (10 ** 18) (#873)
MetaMatrix.slitherConstructorVariables() (#851-1427) uses literals with too many digits:
- gasForProcessing = 600000 (#900)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

DividendPayingToken.lastAmount (#218) is never used in BUSDDividendTracker (#634-849)
Remove unused state variables.

Additional information: link

DividendPayingToken.lastAmount (#218) should be constant
MetaMatrix._LpFeeBuy (#889) should be constant
MetaMatrix._LpFeeSell (#892) should be constant
MetaMatrix._busdDividendRewardsFeeBuy (#887) should be constant
MetaMatrix._busdDividendRewardsFeeSell (#891) should be constant
MetaMatrix._marketingFeeBuy (#888) should be constant
MetaMatrix._marketingFeeSell (#893) should be constant
MetaMatrix.deadAddress (#858) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#40-43)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#45-49)
name() should be declared external:
- ERC20.name() (#89-91)
symbol() should be declared external:
- ERC20.symbol() (#93-95)
decimals() should be declared external:
- ERC20.decimals() (#97-99)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#109-112)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#114-116)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#118-121)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#123-127)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#129-132)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#134-137)
distributeDividends(uint256) should be declared external:
- DividendPayingToken.distributeDividends(uint256) (#244-255)
withdrawDividend() should be declared external:
- BUSDDividendTracker.withdrawDividend() (#663-665)
- DividendPayingToken.withdrawDividend() (#257-259)
dividendOf(address) should be declared external:
- DividendPayingToken.dividendOf(address) (#284-286)
withdrawnDividendOf(address) should be declared external:
- DividendPayingToken.withdrawnDividendOf(address) (#292-294)
get(IterableMapping.Map,address) should be declared external:
- IterableMapping.get(IterableMapping.Map,address) (#456-458)
getIndexOfKey(IterableMapping.Map,address) should be declared external:
- IterableMapping.getIndexOfKey(IterableMapping.Map,address) (#460-465)
getKeyAtIndex(IterableMapping.Map,uint256) should be declared external:
- IterableMapping.getKeyAtIndex(IterableMapping.Map,uint256) (#467-469)
size(IterableMapping.Map) should be declared external:
- IterableMapping.size(IterableMapping.Map) (#473-475)
getAccountAtIndex(uint256) should be declared external:
- BUSDDividendTracker.getAccountAtIndex(uint256) (#747-764)
process(uint256) should be declared external:
- BUSDDividendTracker.process(uint256) (#791-836)
setAutomatedMarketMakerPair(address,bool) should be declared external:
- MetaMatrix.setAutomatedMarketMakerPair(address,bool) (#1116-1120)
getIsExcludedFromFees(address) should be declared external:
- MetaMatrix.getIsExcludedFromFees(address) (#1161-1163)
Use the external attribute for functions never called from the contract.

Additional information: link

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

Attempt to swap token was unsuccessful. For some reason it is untradeable. If token is not in presale stage and is not traded outside PancakeSwap, then it's a scam

Additional information: link

Average 30d PancakeSwap liquidity is less than $100. Token is either dead or inactive.

Average 30d PancakeSwap volume is less than $100. Token is either dead or inactive.

Token is deployed only at one blockchain

Token has only one trading pair

Average 30d number of PancakeSwap swaps is low.

Unable to crawl data from the website

Token was delisted (assigned to inactive / untracked listing) from CoinMarketCap

Additional information: link

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 Telegram link on the website

Unable to find Twitter link on the website

Unable to find token on CoinHunt

Additional information: link

Unable to find code repository for the project

Token is marked as scam (rug pull, honeypot, phishing, etc.)

Additional information: link

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death

Token has relatively low CoinGecko rank