card [Crypney - Crypto Credit Card] Token

card.addLiquidity(uint256,uint256) (#1729-1744) sends eth to arbitrary user
Dangerous calls:
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in card._transfer(address,address,uint256) (#1569-1654):
External calls:
- swapAndSendToFee(marketingTokens) (#1596)
- IERC20(BUSD).transfer(_marketingWalletAddress,newBalance) (#1662)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
- swapAndSendDividends(sellTokens) (#1602)
- success = IERC20(BUSD).transfer(address(dividendTracker),dividends) (#1761)
- dividendTracker.distributeBUSDDividends(dividends) (#1764)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
External calls sending eth:
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
State variables written after the call(s):
- super._transfer(from,address(this),fees) (#1631)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#1037)
- _balances[recipient] = _balances[recipient].add(amount) (#1038)
- super._transfer(from,deadWallet,burnShare) (#1635)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#1037)
- _balances[recipient] = _balances[recipient].add(amount) (#1038)
- super._transfer(from,to,amount) (#1639)
- _balances[sender] = _balances[sender].sub(amount,ERC20: transfer amount exceeds balance) (#1037)
- _balances[recipient] = _balances[recipient].add(amount) (#1038)
- swapping = false (#1604)
Apply the check-effects-interactions pattern.

Additional information: link

card.swapAndSendToFee(uint256) (#1656-1663) ignores return value by IERC20(BUSD).transfer(_marketingWalletAddress,newBalance) (#1662)
card.removeStuckToken(address) (#1751-1756) ignores return value by IERC20(_address).transfer(owner(),IERC20(_address).balanceOf(address(this))) (#1755)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

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

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 ownership is not renounced (belongs to a wallet)

Reentrancy in DividendPayingToken._withdrawDividendOfUser(address) (#1204-1220):
External calls:
- success = IERC20(BUSD).transfer(user,_withdrawableDividend) (#1209)
State variables written after the call(s):
- withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend) (#1212)
Reentrancy in card.updateDividendTracker(address) (#1421-1436):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (#1428)
- newDividendTracker.excludeFromDividends(address(this)) (#1429)
- newDividendTracker.excludeFromDividends(owner()) (#1430)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1431)
State variables written after the call(s):
- dividendTracker = newDividendTracker (#1435)
Apply the check-effects-interactions pattern.

Additional information: link

card._transfer(address,address,uint256).iterations (#1647) is a local variable never initialized
card._transfer(address,address,uint256).claims (#1647) is a local variable never initialized
card._transfer(address,address,uint256).lastProcessedIndex (#1647) 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

card.claim() (#1556-1558) ignores return value by dividendTracker.processAccount(msg.sender,false) (#1557)
card._transfer(address,address,uint256) (#1569-1654) ignores return value by dividendTracker.process(gas) (#1647-1652)
card.addLiquidity(uint256,uint256) (#1729-1744) ignores return value by uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
Ensure that all the return values of the function calls are used.

Additional information: link

DividendPayingToken.constructor(string,string)._name (#1178) shadows:
- ERC20._name (#859) (state variable)
DividendPayingToken.constructor(string,string)._symbol (#1178) shadows:
- ERC20._symbol (#860) (state variable)
DividendPayingToken.dividendOf(address)._owner (#1226) shadows:
- Ownable._owner (#652) (state variable)
DividendPayingToken.withdrawableDividendOf(address)._owner (#1233) shadows:
- Ownable._owner (#652) (state variable)
DividendPayingToken.withdrawnDividendOf(address)._owner (#1240) shadows:
- Ownable._owner (#652) (state variable)
DividendPayingToken.accumulativeDividendOf(address)._owner (#1250) shadows:
- Ownable._owner (#652) (state variable)
Rename the local variables that shadow another component.

Additional information: link

card.updateUniswapV2Router(address)._uniswapV2Pair (#1442-1443) lacks a zero-check on :
- uniswapV2Pair = _uniswapV2Pair (#1444)
card.setMarketingWallet(address).wallet (#1462) lacks a zero-check on :
- _marketingWalletAddress = wallet (#1463)
Check that the address is not zero.

Additional information: link

DividendPayingToken._withdrawDividendOfUser(address) (#1204-1220) has external calls inside a loop: success = IERC20(BUSD).transfer(user,_withdrawableDividend) (#1209)
Favor pull over push strategy for external calls.

Additional information: link

Variable 'card._transfer(address,address,uint256).claims (#1647)' in card._transfer(address,address,uint256) (#1569-1654) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1648)
Variable 'card._transfer(address,address,uint256).lastProcessedIndex (#1647)' in card._transfer(address,address,uint256) (#1569-1654) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1648)
Variable 'card._transfer(address,address,uint256).iterations (#1647)' in card._transfer(address,address,uint256) (#1569-1654) potentially used before declaration: ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1648)
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 card._transfer(address,address,uint256) (#1569-1654):
External calls:
- swapAndSendToFee(marketingTokens) (#1596)
- IERC20(BUSD).transfer(_marketingWalletAddress,newBalance) (#1662)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
External calls sending eth:
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
State variables written after the call(s):
- swapAndLiquify(swapTokens) (#1599)
- _allowances[owner][spender] = amount (#1103)
Reentrancy in card._transfer(address,address,uint256) (#1569-1654):
External calls:
- swapAndSendToFee(marketingTokens) (#1596)
- IERC20(BUSD).transfer(_marketingWalletAddress,newBalance) (#1662)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
- swapAndSendDividends(sellTokens) (#1602)
- success = IERC20(BUSD).transfer(address(dividendTracker),dividends) (#1761)
- dividendTracker.distributeBUSDDividends(dividends) (#1764)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
External calls sending eth:
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
State variables written after the call(s):
- swapAndSendDividends(sellTokens) (#1602)
- _allowances[owner][spender] = amount (#1103)
Reentrancy in card.constructor() (#1383-1415):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#1390-1391)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (#1394)
- uniswapV2Router = _uniswapV2Router (#1393)
Reentrancy in card.constructor() (#1383-1415):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#1390-1391)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#1396)
- dividendTracker.excludeFromDividends(pair) (#1483)
- dividendTracker.excludeFromDividends(address(dividendTracker)) (#1399)
- dividendTracker.excludeFromDividends(address(this)) (#1400)
- dividendTracker.excludeFromDividends(owner()) (#1401)
- dividendTracker.excludeFromDividends(deadWallet) (#1402)
- dividendTracker.excludeFromDividends(address(_uniswapV2Router)) (#1403)
State variables written after the call(s):
- _mint(owner(),100000000 * (10 ** 18)) (#1414)
- _balances[account] = _balances[account].add(amount) (#1057)
- excludeFromFees(owner(),true) (#1406)
- _isExcludedFromFees[account] = excluded (#1449)
- excludeFromFees(_marketingWalletAddress,true) (#1407)
- _isExcludedFromFees[account] = excluded (#1449)
- excludeFromFees(address(this),true) (#1408)
- _isExcludedFromFees[account] = excluded (#1449)
- _mint(owner(),100000000 * (10 ** 18)) (#1414)
- _totalSupply = _totalSupply.add(amount) (#1056)
Reentrancy in cardDividendTracker.processAccount(address,bool) (#1966-1976):
External calls:
- amount = _withdrawDividendOfUser(account) (#1967)
- success = IERC20(BUSD).transfer(user,_withdrawableDividend) (#1209)
State variables written after the call(s):
- lastClaimTimes[account] = block.timestamp (#1970)
Reentrancy in card.swapAndLiquify(uint256) (#1665-1686):
External calls:
- swapTokensForEth(half) (#1677)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
- addLiquidity(otherHalf,newBalance) (#1683)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1683)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
State variables written after the call(s):
- addLiquidity(otherHalf,newBalance) (#1683)
- _allowances[owner][spender] = amount (#1103)
Reentrancy in card.updateUniswapV2Router(address) (#1438-1445):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this),uniswapV2Router.WETH()) (#1442-1443)
State variables written after the call(s):
- uniswapV2Pair = _uniswapV2Pair (#1444)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in card._setAutomatedMarketMakerPair(address,bool) (#1478-1487):
External calls:
- dividendTracker.excludeFromDividends(pair) (#1483)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (#1486)
Reentrancy in card._transfer(address,address,uint256) (#1569-1654):
External calls:
- swapAndSendToFee(marketingTokens) (#1596)
- IERC20(BUSD).transfer(_marketingWalletAddress,newBalance) (#1662)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
External calls sending eth:
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1104)
- swapAndLiquify(swapTokens) (#1599)
- SwapAndLiquify(half,newBalance,otherHalf) (#1685)
- swapAndLiquify(swapTokens) (#1599)
Reentrancy in card._transfer(address,address,uint256) (#1569-1654):
External calls:
- swapAndSendToFee(marketingTokens) (#1596)
- IERC20(BUSD).transfer(_marketingWalletAddress,newBalance) (#1662)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
- swapAndSendDividends(sellTokens) (#1602)
- success = IERC20(BUSD).transfer(address(dividendTracker),dividends) (#1761)
- dividendTracker.distributeBUSDDividends(dividends) (#1764)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
External calls sending eth:
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1104)
- swapAndSendDividends(sellTokens) (#1602)
- SendDividends(tokens,dividends) (#1765)
- swapAndSendDividends(sellTokens) (#1602)
- Transfer(sender,recipient,amount) (#1039)
- super._transfer(from,to,amount) (#1639)
- Transfer(sender,recipient,amount) (#1039)
- super._transfer(from,address(this),fees) (#1631)
- Transfer(sender,recipient,amount) (#1039)
- super._transfer(from,deadWallet,burnShare) (#1635)
Reentrancy in card._transfer(address,address,uint256) (#1569-1654):
External calls:
- swapAndSendToFee(marketingTokens) (#1596)
- IERC20(BUSD).transfer(_marketingWalletAddress,newBalance) (#1662)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
- swapAndSendDividends(sellTokens) (#1602)
- success = IERC20(BUSD).transfer(address(dividendTracker),dividends) (#1761)
- dividendTracker.distributeBUSDDividends(dividends) (#1764)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- dividendTracker.setBalance(address(from),balanceOf(from)) (#1641)
- dividendTracker.setBalance(address(to),balanceOf(to)) (#1642)
- dividendTracker.process(gas) (#1647-1652)
External calls sending eth:
- swapAndLiquify(swapTokens) (#1599)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,true,gas,tx.origin) (#1648)
Reentrancy in card.constructor() (#1383-1415):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#1390-1391)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#1396)
- dividendTracker.excludeFromDividends(pair) (#1483)
Event emitted after the call(s):
- SetAutomatedMarketMakerPair(pair,value) (#1486)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#1396)
Reentrancy in card.constructor() (#1383-1415):
External calls:
- _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#1390-1391)
- _setAutomatedMarketMakerPair(_uniswapV2Pair,true) (#1396)
- dividendTracker.excludeFromDividends(pair) (#1483)
- dividendTracker.excludeFromDividends(address(dividendTracker)) (#1399)
- dividendTracker.excludeFromDividends(address(this)) (#1400)
- dividendTracker.excludeFromDividends(owner()) (#1401)
- dividendTracker.excludeFromDividends(deadWallet) (#1402)
- dividendTracker.excludeFromDividends(address(_uniswapV2Router)) (#1403)
Event emitted after the call(s):
- ExcludeFromFees(account,excluded) (#1451)
- excludeFromFees(owner(),true) (#1406)
- ExcludeFromFees(account,excluded) (#1451)
- excludeFromFees(address(this),true) (#1408)
- ExcludeFromFees(account,excluded) (#1451)
- excludeFromFees(_marketingWalletAddress,true) (#1407)
- Transfer(address(0),account,amount) (#1058)
- _mint(owner(),100000000 * (10 ** 18)) (#1414)
Reentrancy in cardDividendTracker.processAccount(address,bool) (#1966-1976):
External calls:
- amount = _withdrawDividendOfUser(account) (#1967)
- success = IERC20(BUSD).transfer(user,_withdrawableDividend) (#1209)
Event emitted after the call(s):
- Claim(account,amount,automatic) (#1971)
Reentrancy in card.processDividendTracker(uint256) (#1551-1554):
External calls:
- (iterations,claims,lastProcessedIndex) = dividendTracker.process(gas) (#1552)
Event emitted after the call(s):
- ProcessedDividendTracker(iterations,claims,lastProcessedIndex,false,gas,tx.origin) (#1553)
Reentrancy in card.swapAndLiquify(uint256) (#1665-1686):
External calls:
- swapTokensForEth(half) (#1677)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1700-1706)
- addLiquidity(otherHalf,newBalance) (#1683)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
External calls sending eth:
- addLiquidity(otherHalf,newBalance) (#1683)
- uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this),tokenAmount,0,0,address(0),block.timestamp) (#1735-1742)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#1104)
- addLiquidity(otherHalf,newBalance) (#1683)
- SwapAndLiquify(half,newBalance,otherHalf) (#1685)
Reentrancy in card.swapAndSendDividends(uint256) (#1758-1767):
External calls:
- swapTokensForBUSD(tokens) (#1759)
- uniswapV2Router.swapExactTokensForTokensSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#1720-1726)
- success = IERC20(BUSD).transfer(address(dividendTracker),dividends) (#1761)
- dividendTracker.distributeBUSDDividends(dividends) (#1764)
Event emitted after the call(s):
- SendDividends(tokens,dividends) (#1765)
Reentrancy in card.updateDividendTracker(address) (#1421-1436):
External calls:
- newDividendTracker.excludeFromDividends(address(newDividendTracker)) (#1428)
- newDividendTracker.excludeFromDividends(address(this)) (#1429)
- newDividendTracker.excludeFromDividends(owner()) (#1430)
- newDividendTracker.excludeFromDividends(address(uniswapV2Router)) (#1431)
Event emitted after the call(s):
- UpdateDividendTracker(newAddress,address(dividendTracker)) (#1433)
Apply the check-effects-interactions pattern.

Additional information: link

cardDividendTracker.getAccount(address) (#1830-1873) uses timestamp for comparisons
Dangerous comparisons:
- nextClaimTime > block.timestamp (#1870-1872)
cardDividendTracker.canAutoClaim(uint256) (#1894-1900) uses timestamp for comparisons
Dangerous comparisons:
- lastClaimTime > block.timestamp (#1895)
- block.timestamp.sub(lastClaimTime) >= claimWait (#1899)
Avoid relying on block.timestamp.

Additional information: link

Context._msgData() (#639-642) is never used and should be removed
DividendPayingToken._transfer(address,address,uint256) (#1260-1266) is never used and should be removed
SafeMath.mod(uint256,uint256) (#596-598) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#612-615) is never used and should be removed
SafeMathInt.abs(int256) (#439-442) is never used and should be removed
SafeMathInt.div(int256,int256) (#410-416) is never used and should be removed
SafeMathInt.mul(int256,int256) (#398-405) is never used and should be removed
Remove unused functions.

Additional information: link

card.totalBuyFees (#1328) is set pre-construction with a non-constant function or state variable:
- buyBUSDRewardsFee.add(buyLiquidityFee).add(buyMarketingFee).add(buyBurnFee)
card.totalSellFees (#1334) is set pre-construction with a non-constant function or state variable:
- sellBUSDRewardsFee.add(sellLiquidityFee).add(sellMarketingFee).add(sellBurnFee)
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

Pragma version^0.6.2 (#3) allows old versions
Pragma version^0.6.2 (#148) allows old versions
Pragma version^0.6.2 (#170) allows old versions
Pragma version^0.6.2 (#226) allows old versions
Pragma version^0.6.2 (#293) allows old versions
Pragma version^0.6.2 (#321) allows old versions
Pragma version^0.6.2 (#385) allows old versions
Pragma version^0.6.2 (#455) allows old versions
Pragma version^0.6.2 (#473) allows old versions
Pragma version^0.6.2 (#622) allows old versions
Pragma version^0.6.2 (#647) allows old versions
Pragma version^0.6.2 (#707) allows old versions
Pragma version^0.6.2 (#791) allows old versions
Pragma version^0.6.2 (#820) allows old versions
Pragma version^0.6.2 (#1132) allows old versions
Pragma version^0.6.2 (#1304) allows old versions
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

Function IUniswapV2Router01.WETH() (#7) is not in mixedCase
Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#187) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#188) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#205) is not in mixedCase
Parameter DividendPayingToken.dividendOf(address)._owner (#1226) is not in mixedCase
Parameter DividendPayingToken.withdrawableDividendOf(address)._owner (#1233) is not in mixedCase
Parameter DividendPayingToken.withdrawnDividendOf(address)._owner (#1240) is not in mixedCase
Parameter DividendPayingToken.accumulativeDividendOf(address)._owner (#1250) is not in mixedCase
Variable DividendPayingToken.BUSD (#1152) is not in mixedCase
Constant DividendPayingToken.magnitude (#1158) is not in UPPER_CASE_WITH_UNDERSCORES
Contract card (#1306-1768) is not in CapWords
Parameter card.removeStuckToken(address)._address (#1751) is not in mixedCase
Variable card.BUSD (#1318) is not in mixedCase
Variable card._isBlacklisted (#1322) is not in mixedCase
Variable card._marketingWalletAddress (#1336) is not in mixedCase
Contract cardDividendTracker (#1770-1978) is not in CapWords
Parameter cardDividendTracker.getAccount(address)._account (#1830) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#640)" inContext (#634-643)
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 (#12) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#13)
Variable DividendPayingToken._withdrawDividendOfUser(address)._withdrawableDividend (#1205) is too similar to cardDividendTracker.getAccount(address).withdrawableDividends (#1835)
Prevent variables from having similar names.

Additional information: link

card.constructor() (#1383-1415) uses literals with too many digits:
- _mint(owner(),100000000 * (10 ** 18)) (#1414)
card.updateGasForProcessing(uint256) (#1490-1495) uses literals with too many digits:
- require(bool,string)(newValue >= 200000 && newValue <= 500000,card: gasForProcessing must be between 200,000 and 500,000) (#1491)
card.slitherConstructorVariables() (#1306-1768) uses literals with too many digits:
- deadWallet = 0x000000000000000000000000000000000000dEaD (#1316)
card.slitherConstructorVariables() (#1306-1768) uses literals with too many digits:
- swapTokensAtAmount = 100000 * (10 ** 18) (#1320)
card.slitherConstructorVariables() (#1306-1768) uses literals with too many digits:
- gasForProcessing = 300000 (#1340)
cardDividendTracker.constructor() (#1790-1793) uses literals with too many digits:
- minimumTokenBalanceForDividends = 200000 * (10 ** 18) (#1792)
cardDividendTracker.getAccountAtIndex(uint256) (#1875-1892) uses literals with too many digits:
- (0x0000000000000000000000000000000000000000,- 1,- 1,0,0,0,0,0) (#1886)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

SafeMathInt.MAX_INT256 (#393) is never used in SafeMathInt (#391-449)
Remove unused state variables.

Additional information: link

card.buyBUSDRewardsFee (#1324) should be constant
card.buyBurnFee (#1327) should be constant
card.buyLiquidityFee (#1325) should be constant
card.buyMarketingFee (#1326) should be constant
card.deadWallet (#1316) should be constant
card.sellBUSDRewardsFee (#1330) should be constant
card.sellBurnFee (#1333) should be constant
card.sellLiquidityFee (#1331) should be constant
card.sellMarketingFee (#1332) should be constant
card.swapTokensAtAmount (#1320) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

get(IterableMapping.Map,address) should be declared external:
- IterableMapping.get(IterableMapping.Map,address) (#237-239)
getIndexOfKey(IterableMapping.Map,address) should be declared external:
- IterableMapping.getIndexOfKey(IterableMapping.Map,address) (#241-246)
getKeyAtIndex(IterableMapping.Map,uint256) should be declared external:
- IterableMapping.getKeyAtIndex(IterableMapping.Map,uint256) (#248-250)
size(IterableMapping.Map) should be declared external:
- IterableMapping.size(IterableMapping.Map) (#254-256)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#687-690)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#696-700)
name() should be declared external:
- ERC20.name() (#879-881)
symbol() should be declared external:
- ERC20.symbol() (#887-889)
decimals() should be declared external:
- ERC20.decimals() (#904-906)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#930-933)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#938-940)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#949-952)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#967-975)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#989-992)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#1008-1011)
distributeBUSDDividends(uint256) should be declared external:
- DividendPayingToken.distributeBUSDDividends(uint256) (#1183-1194)
withdrawDividend() should be declared external:
- DividendPayingToken.withdrawDividend() (#1198-1200)
- cardDividendTracker.withdrawDividend() (#1799-1801)
dividendOf(address) should be declared external:
- DividendPayingToken.dividendOf(address) (#1226-1228)
withdrawnDividendOf(address) should be declared external:
- DividendPayingToken.withdrawnDividendOf(address) (#1240-1242)
updateDividendTracker(address) should be declared external:
- card.updateDividendTracker(address) (#1421-1436)
updateUniswapV2Router(address) should be declared external:
- card.updateUniswapV2Router(address) (#1438-1445)
excludeMultipleAccountsFromFees(address[],bool) should be declared external:
- card.excludeMultipleAccountsFromFees(address[],bool) (#1454-1460)
setAutomatedMarketMakerPair(address,bool) should be declared external:
- card.setAutomatedMarketMakerPair(address,bool) (#1467-1471)
updateGasForProcessing(uint256) should be declared external:
- card.updateGasForProcessing(uint256) (#1490-1495)
isExcludedFromFees(address) should be declared external:
- card.isExcludedFromFees(address) (#1509-1511)
withdrawableDividendOf(address) should be declared external:
- card.withdrawableDividendOf(address) (#1513-1515)
dividendTokenBalanceOf(address) should be declared external:
- card.dividendTokenBalanceOf(address) (#1517-1519)
getAccountAtIndex(uint256) should be declared external:
- cardDividendTracker.getAccountAtIndex(uint256) (#1875-1892)
process(uint256) should be declared external:
- cardDividendTracker.process(uint256) (#1919-1964)
Use the external attribute for functions never called from the contract.

Additional information: link

Contract name (Crypney - Crypto Credit Card) 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.

Not a direct threat, but may indicate unreliable intentions of developer. Widespread names (e.g. Elon, King, Moon, Doge) are common among meme-tokens and scams. The allow to gain free hype and attract unexperienced investors.

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.

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