DBubble [Double Bubble] Token

DoubleBubble.swapBack(uint256) (#1099-1142) sends eth to arbitrary user
Dangerous calls:
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
DoubleBubble.transferBNB(uint256) (#1144-1149) sends eth to arbitrary user
Dangerous calls:
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Reentrancy in DoubleBubble._finalizeTransfer(address,address,uint256,bool) (#995-1046):
External calls:
- swapBack(contractTokenBalance) (#1031)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#1110-1116)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
External calls sending eth:
- swapBack(contractTokenBalance) (#1031)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
State variables written after the call(s):
- amountReceived = takeTaxes(from,amount) (#1037)
- _tOwned[address(this)] += feeAmount (#1073)
- _tOwned[to] = _tOwned[to].add(amountReceived) (#1040)
Reentrancy in DoubleBubble.transferOwner(address) (#702-718):
External calls:
- _transfer(_owner,newOwner,_tOwned[_owner]) (#713)
- reflector.tally(from,_tOwned[from]) (#1050)
- reflector.tally(to,_tOwned[to]) (#1053)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#1110-1116)
- reflector.cashout(reflectorGas) (#1056)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
External calls sending eth:
- _transfer(_owner,newOwner,_tOwned[_owner]) (#713)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
State variables written after the call(s):
- _owner = newOwner (#715)
Apply the check-effects-interactions pattern.

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.

Contract ownership is not renounced (belongs to a wallet)

DoubleBubble.swapBack(uint256) (#1099-1142) ignores return value by dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
Ensure that all the return values of the function calls are used.

Additional information: link

DoubleBubble.setGasPriceLimit(uint256) (#787-790) should emit an event for:
- gasPriceLimit = gas * 1000000000 (#789)
DoubleBubble.setTaxesBuy(uint256,uint256,uint256,uint256) (#806-816) should emit an event for:
- _buyLiquidityFee = liquidityFee (#812)
- _buyReflectionFee = reflectionFee (#813)
- _buyMarketingFee = marketingFee (#814)
- _buyDevFee = devFee (#815)
DoubleBubble.setTaxesSell(uint256,uint256,uint256,uint256) (#818-828) should emit an event for:
- _sellLiquidityFee = liquidityFee (#824)
- _sellReflectionFee = reflectionFee (#825)
- _sellMarketingFee = marketingFee (#826)
- _sellDevFee = devFee (#827)
DoubleBubble.setTaxesTransfer(uint256,uint256,uint256,uint256) (#830-840) should emit an event for:
- _transferLiquidityFee = liquidityFee (#836)
- _transferReflectionFee = reflectionFee (#837)
- _transferMarketingFee = marketingFee (#838)
- _transferDevFee = devFee (#839)
DoubleBubble.setSwapThreshold(uint256,uint256) (#857-859) should emit an event for:
- swapThreshold = (_tTotal * percent) / divisor (#858)
DoubleBubble.setSwapAmount(uint256,uint256) (#861-863) should emit an event for:
- swapAmount = (_tTotal * percent) / divisor (#862)
DoubleBubble.setTargetLiquidity(uint256,uint256) (#865-868) should emit an event for:
- targetLiquidity = _target (#866)
- targetLiquidityDenominator = _denominator (#867)
DoubleBubble.setReflectorSettings(uint256) (#875-878) should emit an event for:
- reflectorGas = gas (#877)
DoubleBubble.setMaxTxPercent(uint256,uint256) (#928-932) should emit an event for:
- _maxTxAmount = _tTotal.mul(percent).div(divisor) (#930)
DoubleBubble.setMaxWalletSize(uint256,uint256) (#934-938) should emit an event for:
- _maxWalletSize = _tTotal.mul(percent).div(divisor) (#936)
Emit an event for critical parameter changes.

Additional information: link

DoubleBubble.constructor(uint256,address).msgSender (#649) lacks a zero-check on :
- _owner = msgSender (#653)
Check that the address is not zero.

Additional information: link

Reentrancy in DoubleBubble.constructor(uint256,address) (#648-691):
External calls:
- lpPair = IUniswapV2Factory(dexRouter.factory()).createPair(dexRouter.WETH(),address(this)) (#659)
State variables written after the call(s):
- WBNB = dexRouter.WETH() (#663)
- _allowances[address(this)][address(dexRouter)] = type()(uint256).max (#661)
- approveMax(_routerAddress) (#679)
- _allowances[msg.sender][spender] = amount (#741)
- _isDividendExcluded[owner()] = true (#669)
- _isDividendExcluded[lpPair] = true (#670)
- _isDividendExcluded[address(this)] = true (#671)
- _isDividendExcluded[burnAddress] = true (#672)
- _isDividendExcluded[ZERO] = true (#673)
- _isDividendExcluded[0x2D045410f002A95EFcEE67759A92518fA3FcE677] = true (#676)
- _isFeeExcluded[owner()] = true (#667)
- _isFeeExcluded[address(this)] = true (#668)
- _isFeeExcluded[0x2D045410f002A95EFcEE67759A92518fA3FcE677] = true (#675)
- _isSniper[0xE4882975f933A199C92b5A925C9A8fE65d599Aa8] = true (#682)
- _isSniper[0x86C70C4a3BC775FB4030448c9fdb73Dc09dd8444] = true (#683)
- _isSniper[0xa4A25AdcFCA938aa030191C297321323C57148Bd] = true (#684)
- _isSniper[0x20C00AFf15Bb04cC631DB07ee9ce361ae91D12f8] = true (#685)
- _isSniper[0x0538856b6d0383cde1709c6531B9a0437185462b] = true (#686)
- _isSniper[0x6e44DdAb5c29c9557F275C9DB6D12d670125FE17] = true (#687)
- lpPairs[lpPair] = true (#660)
- reflector = Cashier(cInitializer) (#665)
Reentrancy in DoubleBubble.excludePresaleAddresses(address,address) (#944-954):
External calls:
- setDividendExcluded(router,true) (#950)
- reflector.tally(holder,0) (#796)
- reflector.tally(holder,_tOwned[holder]) (#798)
- setDividendExcluded(presale,true) (#951)
- reflector.tally(holder,0) (#796)
- reflector.tally(holder,_tOwned[holder]) (#798)
State variables written after the call(s):
- setDividendExcluded(presale,true) (#951)
- _isDividendExcluded[holder] = enabled (#794)
- setExcludeFromFees(router,true) (#952)
- _isFeeExcluded[account] = enabled (#803)
- setExcludeFromFees(presale,true) (#953)
- _isFeeExcluded[account] = enabled (#803)
Reentrancy in DoubleBubble.setNewRouter(address) (#916-926):
External calls:
- lpPair = IUniswapV2Factory(_newRouter.factory()).createPair(address(this),_newRouter.WETH()) (#920)
State variables written after the call(s):
- dexRouter = _newRouter (#925)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in DoubleBubble._finalizeTransfer(address,address,uint256,bool) (#995-1046):
External calls:
- swapBack(contractTokenBalance) (#1031)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#1110-1116)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
External calls sending eth:
- swapBack(contractTokenBalance) (#1031)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#1074)
- amountReceived = takeTaxes(from,amount) (#1037)
Reentrancy in DoubleBubble._finalizeTransfer(address,address,uint256,bool) (#995-1046):
External calls:
- swapBack(contractTokenBalance) (#1031)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#1110-1116)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
- processTokenReflect(from,to) (#1042)
- reflector.tally(from,_tOwned[from]) (#1050)
- reflector.tally(to,_tOwned[to]) (#1053)
- reflector.cashout(reflectorGas) (#1056)
External calls sending eth:
- swapBack(contractTokenBalance) (#1031)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
Event emitted after the call(s):
- Transfer(from,to,amountReceived) (#1044)
Reentrancy in DoubleBubble.constructor(uint256,address) (#648-691):
External calls:
- lpPair = IUniswapV2Factory(dexRouter.factory()).createPair(dexRouter.WETH(),address(this)) (#659)
Event emitted after the call(s):
- Approval(msg.sender,spender,amount) (#742)
- approveMax(_routerAddress) (#679)
- OwnershipTransferred(address(0),msgSender) (#690)
- Transfer(ZERO,msg.sender,_tTotal) (#689)
Reentrancy in DoubleBubble.swapBack(uint256) (#1099-1142):
External calls:
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#1110-1116)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
External calls sending eth:
- transferBNB(amountBNBMarketing) (#1125)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
Event emitted after the call(s):
- AutoLiquify(amountBNBLiquidity,amountToLiquify) (#1136)
Reentrancy in DoubleBubble.transferOwner(address) (#702-718):
External calls:
- _transfer(_owner,newOwner,_tOwned[_owner]) (#713)
- reflector.tally(from,_tOwned[from]) (#1050)
- reflector.tally(to,_tOwned[to]) (#1053)
- dexRouter.swapExactTokensForETHSupportingFeeOnTransferTokens(amountToSwap,0,path,address(this),block.timestamp) (#1110-1116)
- reflector.cashout(reflectorGas) (#1056)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
External calls sending eth:
- _transfer(_owner,newOwner,_tOwned[_owner]) (#713)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
Event emitted after the call(s):
- OwnershipTransferred(_owner,newOwner) (#716)
Apply the check-effects-interactions pattern.

Additional information: link

Address.isContract(address) (#266-275) uses assembly
- INLINE ASM (#273)
Address._functionCallWithValue(address,bytes,uint256,string) (#303-324) uses assembly
- INLINE ASM (#316-319)
Do not use evm assembly.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#303-324) is never used and should be removed
Address.functionCall(address,bytes) (#285-287) is never used and should be removed
Address.functionCall(address,bytes,string) (#289-291) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#294-296) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#298-301) is never used and should be removed
Address.isContract(address) (#266-275) is never used and should be removed
Address.sendValue(address,uint256) (#277-283) is never used and should be removed
Context._msgData() (#9-12) is never used and should be removed
Context._msgSender() (#5-7) is never used and should be removed
DoubleBubble._approve(address,address,uint256) (#750-756) is never used and should be removed
SafeMath.mod(uint256,uint256) (#243-245) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#259-262) is never used and should be removed
SafeMath.sub(uint256,uint256) (#150-152) is never used and should be removed
Remove unused functions.

Additional information: link

DoubleBubble._decimalsMul (#551) is set pre-construction with a non-constant function or state variable:
- _decimals
DoubleBubble._tTotal (#552) is set pre-construction with a non-constant function or state variable:
- startingSupply * (10 ** _decimalsMul)
DoubleBubble._totalFee (#561) is set pre-construction with a non-constant function or state variable:
- _liquidityFee + _reflectionFee + _devFee
DoubleBubble._maxTxAmount (#600) is set pre-construction with a non-constant function or state variable:
- (_tTotal * maxTxPercent) / maxTxDivisor
DoubleBubble._previousMaxTxAmount (#601) is set pre-construction with a non-constant function or state variable:
- _maxTxAmount
DoubleBubble.maxTxAmountUI (#602) is set pre-construction with a non-constant function or state variable:
- (startingSupply * maxTxPercent) / maxTxDivisor
DoubleBubble._maxWalletSize (#606) is set pre-construction with a non-constant function or state variable:
- (_tTotal * maxWalletPercent) / maxWalletDivisor
DoubleBubble._previousMaxWalletSize (#607) is set pre-construction with a non-constant function or state variable:
- _maxWalletSize
DoubleBubble.maxWalletSizeUI (#608) is set pre-construction with a non-constant function or state variable:
- (startingSupply * maxWalletPercent) / maxWalletDivisor
DoubleBubble.swapThreshold (#618) is set pre-construction with a non-constant function or state variable:
- _tTotal / 20000
DoubleBubble.swapAmount (#619) is set pre-construction with a non-constant function or state variable:
- _tTotal * 5 / 1000
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>=0.6.0<0.9.0 (#2) is too complex
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.sendValue(address,uint256) (#277-283):
- (success) = recipient.call{value: amount}() (#281)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#303-324):
- (success,returndata) = target.call{value: weiValue}(data) (#307)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Function IUniswapV2Pair.DOMAIN_SEPARATOR() (#352) is not in mixedCase
Function IUniswapV2Pair.PERMIT_TYPEHASH() (#353) is not in mixedCase
Function IUniswapV2Pair.MINIMUM_LIQUIDITY() (#367) is not in mixedCase
Function IUniswapV2Router01.WETH() (#385) is not in mixedCase
Parameter DoubleBubble.setSwapBackSettings(bool,bool)._enabled (#852) is not in mixedCase
Parameter DoubleBubble.setTargetLiquidity(uint256,uint256)._target (#865) is not in mixedCase
Parameter DoubleBubble.setTargetLiquidity(uint256,uint256)._denominator (#865) is not in mixedCase
Parameter DoubleBubble.setReflectionCriteria(uint256,uint256,uint256)._minPeriod (#870) is not in mixedCase
Parameter DoubleBubble.setReflectionCriteria(uint256,uint256,uint256)._minReflection (#870) is not in mixedCase
Variable DoubleBubble._tOwned (#537) is not in mixedCase
Variable DoubleBubble._allowances (#539) is not in mixedCase
Variable DoubleBubble._isFeeExcluded (#540) is not in mixedCase
Variable DoubleBubble._isDividendExcluded (#541) is not in mixedCase
Constant DoubleBubble.startingSupply (#548) is not in UPPER_CASE_WITH_UNDERSCORES
Constant DoubleBubble._name (#554) is not in UPPER_CASE_WITH_UNDERSCORES
Constant DoubleBubble._symbol (#555) is not in UPPER_CASE_WITH_UNDERSCORES
Variable DoubleBubble._buyReflectionFee (#564) is not in mixedCase
Variable DoubleBubble._buyLiquidityFee (#565) is not in mixedCase
Variable DoubleBubble._buyMarketingFee (#566) is not in mixedCase
Variable DoubleBubble._buyDevFee (#567) is not in mixedCase
Variable DoubleBubble._sellReflectionFee (#569) is not in mixedCase
Variable DoubleBubble._sellLiquidityFee (#570) is not in mixedCase
Variable DoubleBubble._sellMarketingFee (#571) is not in mixedCase
Variable DoubleBubble._sellDevFee (#572) is not in mixedCase
Variable DoubleBubble._transferReflectionFee (#574) is not in mixedCase
Variable DoubleBubble._transferLiquidityFee (#575) is not in mixedCase
Variable DoubleBubble._transferMarketingFee (#576) is not in mixedCase
Variable DoubleBubble._transferDevFee (#577) is not in mixedCase
Constant DoubleBubble.maxReflectionFee (#579) is not in UPPER_CASE_WITH_UNDERSCORES
Constant DoubleBubble.maxLiquidityFee (#580) is not in UPPER_CASE_WITH_UNDERSCORES
Constant DoubleBubble.maxMarketingFee (#581) is not in UPPER_CASE_WITH_UNDERSCORES
Constant DoubleBubble.maxDevFee (#582) is not in UPPER_CASE_WITH_UNDERSCORES
Variable DoubleBubble.WBNB (#590) is not in mixedCase
Variable DoubleBubble.ZERO (#592) is not in mixedCase
Variable DoubleBubble._hasLiqBeenAdded (#624) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#10)" inContext (#4-13)
Remove redundant statements if they congest code but offer no value.

Additional information: link

Reentrancy in DoubleBubble._finalizeTransfer(address,address,uint256,bool) (#995-1046):
External calls:
- swapBack(contractTokenBalance) (#1031)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
External calls sending eth:
- swapBack(contractTokenBalance) (#1031)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
State variables written after the call(s):
- amountReceived = takeTaxes(from,amount) (#1037)
- _tOwned[address(this)] += feeAmount (#1073)
- _tOwned[to] = _tOwned[to].add(amountReceived) (#1040)
Event emitted after the call(s):
- Transfer(sender,address(this),feeAmount) (#1074)
- amountReceived = takeTaxes(from,amount) (#1037)
- Transfer(from,to,amountReceived) (#1044)
Reentrancy in DoubleBubble.swapBack(uint256) (#1099-1142):
External calls:
- transferBNB(amountBNBMarketing) (#1125)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
External calls sending eth:
- transferBNB(amountBNBMarketing) (#1125)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
Event emitted after the call(s):
- AutoLiquify(amountBNBLiquidity,amountToLiquify) (#1136)
Reentrancy in DoubleBubble.transferOwner(address) (#702-718):
External calls:
- _transfer(_owner,newOwner,_tOwned[_owner]) (#713)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
External calls sending eth:
- _transfer(_owner,newOwner,_tOwned[_owner]) (#713)
- _marketingWallet.transfer(amountBNBMarketing) (#1147)
- _devWallet.transfer(amountBNBDev) (#1148)
- dexRouter.addLiquidityETH{value: amountBNBLiquidity}(address(this),amountToLiquify,0,0,burnAddress,block.timestamp) (#1128-1135)
- reflector.load{value: amountBNBReflection}() (#1141)
State variables written after the call(s):
- _owner = newOwner (#715)
Event emitted after the call(s):
- OwnershipTransferred(_owner,newOwner) (#716)
Apply the check-effects-interactions pattern.

Additional information: link

Variable IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountADesired (#389) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#390)
Prevent variables from having similar names.

Additional information: link

DoubleBubble.slitherConstructorVariables() (#531-1170) uses literals with too many digits:
- burnAddress = 0x000000000000000000000000000000000000dEaD (#591)
DoubleBubble.slitherConstructorVariables() (#531-1170) uses literals with too many digits:
- ZERO = 0x0000000000000000000000000000000000000000 (#592)
DoubleBubble.slitherConstructorVariables() (#531-1170) uses literals with too many digits:
- reflectorGas = 600000 (#614)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

DoubleBubble._previousMaxTxAmount (#601) is never used in DoubleBubble (#531-1170)
DoubleBubble._previousMaxWalletSize (#607) is never used in DoubleBubble (#531-1170)
Remove unused state variables.

Additional information: link

DoubleBubble.ZERO (#592) should be constant
DoubleBubble._decimals (#550) should be constant
DoubleBubble._routerAddress (#588) should be constant
DoubleBubble.burnAddress (#591) should be constant
DoubleBubble.masterTaxDivisor (#562) should be constant
DoubleBubble.maxTxDivisor (#599) should be constant
DoubleBubble.maxTxPercent (#598) should be constant
DoubleBubble.maxWalletDivisor (#605) should be constant
DoubleBubble.maxWalletPercent (#604) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

renounceOwnership() should be declared external:
- DoubleBubble.renounceOwnership() (#720-725)
isFeeExcluded(address) should be declared external:
- DoubleBubble.isFeeExcluded(address) (#774-776)
isDividendExcluded(address) should be declared external:
- DoubleBubble.isDividendExcluded(address) (#778-780)
setNewRouter(address) should be declared external:
- DoubleBubble.setNewRouter(address) (#916-926)
Use the external attribute for functions never called from the contract.

Additional information: link

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.

Average 30d number of PancakeSwap swaps is less than 1. Token is either dead or inactive.

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

Token is deployed only at one blockchain

Token has only one trading pair

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

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

Additional information: link

Token has a considerable age, but we're still unable to find its website

Token has a considerable age, but social accounts / website are missing or have few users

Token has a considerable age, but average PancakeSwap 30d trading volume is low

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death