DUMBO Token

Reentrancy in Dumbo._transfer(address,address,uint256) (#240-277):
External calls:
- swapTokensForEth(contractTokenBalance) (#252)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#284-290)
External calls sending eth:
- sendETHToFee(address(this).balance) (#255)
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
State variables written after the call(s):
- _tokenTransfer(from,to,amount) (#276)
- _rOwned[address(this)] = _rOwned[address(this)].add(rTeam) (#334)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#324)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#325)
- _tokenTransfer(from,to,amount) (#276)
- _rTotal = _rTotal.sub(rFee) (#338)
Apply the check-effects-interactions pattern.

Additional information: link

Dumbo.sendETHToFee(uint256) (#293-296) sends eth to arbitrary user
Dangerous calls:
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Dumbo.rescueForeignTokens(address,address,uint256) (#303-306) ignores return value by Token(_tokenAddr).transfer(_to,_amount) (#305)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

Contract ownership is not renounced (belongs to a wallet)

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.

Unable to verify that contract auditor is trusted: Certik, Quantstamp, Hacken, Solidity, Paladinsec, Openzeppelin, Verichains

Dumbo.allowance(address,address).owner (#212) shadows:
- Ownable.owner() (#104-106) (function)
Dumbo._approve(address,address,uint256).owner (#233) shadows:
- Ownable.owner() (#104-106) (function)
Rename the local variables that shadow another component.

Additional information: link

Ownable.transferOwnership(address).newOwner (#119) lacks a zero-check on :
- _owner = newOwner (#121)
Dumbo.setNewDevAddress(address).dev (#309) lacks a zero-check on :
- _developmentAddress = dev (#311)
Dumbo.setNewMarketingAddress(address).markt (#316) lacks a zero-check on :
- _marketingAddress = markt (#318)
Check that the address is not zero.

Additional information: link

Ownable._previousOwner (#96) is never used in Dumbo (#126-411)
Dumbo._tOwned (#130) is never used in Dumbo (#126-411)
Remove unused state variables.

Additional information: link

Ownable._previousOwner (#96) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

Reentrancy in Dumbo._transfer(address,address,uint256) (#240-277):
External calls:
- swapTokensForEth(contractTokenBalance) (#252)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#284-290)
External calls sending eth:
- sendETHToFee(address(this).balance) (#255)
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
State variables written after the call(s):
- _redisFee = _redisFeeOnBuy (#260)
- _redisFee = _redisFeeOnSell (#265)
- _redisFee = 0 (#270)
- _tokenTransfer(from,to,amount) (#276)
- _tFeeTotal = _tFeeTotal.add(tFee) (#339)
- _taxFee = _taxFeeOnBuy (#261)
- _taxFee = _taxFeeOnSell (#266)
- _taxFee = 0 (#271)
Reentrancy in Dumbo.constructor() (#166-180):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#171-172)
State variables written after the call(s):
- _isExcludedFromFee[owner()] = true (#174)
- _isExcludedFromFee[address(this)] = true (#175)
- _isExcludedFromFee[_developmentAddress] = true (#176)
- _isExcludedFromFee[_marketingAddress] = true (#177)
Reentrancy in Dumbo.transferFrom(address,address,uint256) (#221-225):
External calls:
- _transfer(sender,recipient,amount) (#222)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#284-290)
External calls sending eth:
- _transfer(sender,recipient,amount) (#222)
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#223)
- _allowances[owner][spender] = amount (#236)
Apply the check-effects-interactions pattern.

Additional information: link

Reentrancy in Dumbo._transfer(address,address,uint256) (#240-277):
External calls:
- swapTokensForEth(contractTokenBalance) (#252)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#284-290)
External calls sending eth:
- sendETHToFee(address(this).balance) (#255)
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
Event emitted after the call(s):
- Transfer(sender,recipient,tTransferAmount) (#328)
- _tokenTransfer(from,to,amount) (#276)
Reentrancy in Dumbo.constructor() (#166-180):
External calls:
- uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this),_uniswapV2Router.WETH()) (#171-172)
Event emitted after the call(s):
- Transfer(address(0x0000000000000000000000000000000000000000),_msgSender(),_tTotal) (#179)
Reentrancy in Dumbo.transferFrom(address,address,uint256) (#221-225):
External calls:
- _transfer(sender,recipient,amount) (#222)
- uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount,0,path,address(this),block.timestamp) (#284-290)
External calls sending eth:
- _transfer(sender,recipient,amount) (#222)
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#237)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#223)
Apply the check-effects-interactions pattern.

Additional information: link

Function IUniswapV2Router02.WETH() (#37) is not in mixedCase
Event DumbotokensRescued(address,address,uint256) (#302) is not in CapWords
Event DumbodevAddressUpdated(address,address) (#308) is not in CapWords
Event DumbomarketingAddressUpdated(address,address) (#315) is not in CapWords
Parameter Dumbo.rescueForeignTokens(address,address,uint256)._tokenAddr (#303) is not in mixedCase
Parameter Dumbo.rescueForeignTokens(address,address,uint256)._to (#303) is not in mixedCase
Parameter Dumbo.rescueForeignTokens(address,address,uint256)._amount (#303) is not in mixedCase
Parameter Dumbo.toggleSwap(bool)._swapEnabled (#401) is not in mixedCase
Constant Dumbo._tTotal (#135) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Dumbo._name (#148) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Dumbo._symbol (#149) is not in UPPER_CASE_WITH_UNDERSCORES
Constant Dumbo._decimals (#150) is not in UPPER_CASE_WITH_UNDERSCORES
Follow the Solidity naming convention.

Additional information: link

Reentrancy in Dumbo._transfer(address,address,uint256) (#240-277):
External calls:
- sendETHToFee(address(this).balance) (#255)
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
State variables written after the call(s):
- _tokenTransfer(from,to,amount) (#276)
- _rOwned[address(this)] = _rOwned[address(this)].add(rTeam) (#334)
- _rOwned[sender] = _rOwned[sender].sub(rAmount) (#324)
- _rOwned[recipient] = _rOwned[recipient].add(rTransferAmount) (#325)
- _tokenTransfer(from,to,amount) (#276)
- _rTotal = _rTotal.sub(rFee) (#338)
- _redisFee = _redisFeeOnBuy (#260)
- _redisFee = _redisFeeOnSell (#265)
- _redisFee = 0 (#270)
- _tokenTransfer(from,to,amount) (#276)
- _tFeeTotal = _tFeeTotal.add(tFee) (#339)
- _taxFee = _taxFeeOnBuy (#261)
- _taxFee = _taxFeeOnSell (#266)
- _taxFee = 0 (#271)
Event emitted after the call(s):
- Transfer(sender,recipient,tTransferAmount) (#328)
- _tokenTransfer(from,to,amount) (#276)
Reentrancy in Dumbo.transferFrom(address,address,uint256) (#221-225):
External calls:
- _transfer(sender,recipient,amount) (#222)
- _developmentAddress.transfer(amount.div(2)) (#294)
- _marketingAddress.transfer(amount.div(2)) (#295)
State variables written after the call(s):
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#223)
- _allowances[owner][spender] = amount (#236)
Event emitted after the call(s):
- Approval(owner,spender,amount) (#237)
- _approve(sender,_msgSender(),_allowances[sender][_msgSender()].sub(amount,ERC20: transfer amount exceeds allowance)) (#223)
Apply the check-effects-interactions pattern.

Additional information: link

Variable Dumbo._transferStandard(address,address,uint256).rTransferAmount (#323) is too similar to Dumbo._getTValues(uint256,uint256,uint256).tTransferAmount (#354)
Variable Dumbo._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#362) is too similar to Dumbo._getTValues(uint256,uint256,uint256).tTransferAmount (#354)
Variable Dumbo._getValues(uint256).rTransferAmount (#347) is too similar to Dumbo._getTValues(uint256,uint256,uint256).tTransferAmount (#354)
Variable Dumbo._transferStandard(address,address,uint256).rTransferAmount (#323) is too similar to Dumbo._transferStandard(address,address,uint256).tTransferAmount (#323)
Variable Dumbo._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#362) is too similar to Dumbo._transferStandard(address,address,uint256).tTransferAmount (#323)
Variable Dumbo._transferStandard(address,address,uint256).rTransferAmount (#323) is too similar to Dumbo._getValues(uint256).tTransferAmount (#345)
Variable Dumbo._getValues(uint256).rTransferAmount (#347) is too similar to Dumbo._transferStandard(address,address,uint256).tTransferAmount (#323)
Variable Dumbo._getRValues(uint256,uint256,uint256,uint256).rTransferAmount (#362) is too similar to Dumbo._getValues(uint256).tTransferAmount (#345)
Variable Dumbo._getValues(uint256).rTransferAmount (#347) is too similar to Dumbo._getValues(uint256).tTransferAmount (#345)
Prevent variables from having similar names.

Additional information: link

Dumbo.constructor() (#166-180) uses literals with too many digits:
- Transfer(address(0x0000000000000000000000000000000000000000),_msgSender(),_tTotal) (#179)
Dumbo.slitherConstructorConstantVariables() (#126-411) uses literals with too many digits:
- _tTotal = 1000000 * 10 ** 6 * 10 ** 9 (#135)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#113-116)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#119-122)
name() should be declared external:
- Dumbo.name() (#187-189)
symbol() should be declared external:
- Dumbo.symbol() (#191-193)
decimals() should be declared external:
- Dumbo.decimals() (#195-197)
totalSupply() should be declared external:
- Dumbo.totalSupply() (#199-201)
transfer(address,uint256) should be declared external:
- Dumbo.transfer(address,uint256) (#207-210)
allowance(address,address) should be declared external:
- Dumbo.allowance(address,address) (#212-214)
approve(address,uint256) should be declared external:
- Dumbo.approve(address,uint256) (#216-219)
transferFrom(address,address,uint256) should be declared external:
- Dumbo.transferFrom(address,address,uint256) (#221-225)
rescueForeignTokens(address,address,uint256) should be declared external:
- Dumbo.rescueForeignTokens(address,address,uint256) (#303-306)
setNewDevAddress(address) should be declared external:
- Dumbo.setNewDevAddress(address) (#309-313)
setNewMarketingAddress(address) should be declared external:
- Dumbo.setNewMarketingAddress(address) (#316-320)
setFee(uint256,uint256,uint256,uint256) should be declared external:
- Dumbo.setFee(uint256,uint256,uint256,uint256) (#390-399)
toggleSwap(bool) should be declared external:
- Dumbo.toggleSwap(bool) (#401-403)
excludeMultipleAccountsFromFees(address[],bool) should be declared external:
- Dumbo.excludeMultipleAccountsFromFees(address[],bool) (#405-409)
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.

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Unable to find whitepaper link on the website

Unable to find token on CoinGecko

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Unable to find token on CoinMarketCap

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Unable to find token on CoinHunt

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Unable to find code repository for the project

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

Alexa traffic rank is very low

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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