CBA [CoinBad] Token

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

CoinBad.clearToken(IERC20) (#818-820) ignores return value by _token.transfer(msg.sender,_token.balanceOf(address(this))) (#819)
Use SafeERC20, or ensure that the transfer/transferFrom return value is checked.

Additional information: link

CoinBad.aSBlock (#704) is never initialized. It is used in:
- CoinBad.viewAirdrop() (#787-789)
CoinBad.aEBlock (#705) is never initialized. It is used in:
- CoinBad.viewAirdrop() (#787-789)
CoinBad.aCap (#706) is never initialized. It is used in:
- CoinBad.viewAirdrop() (#787-789)
CoinBad.sSBlock (#709) is never initialized. It is used in:
- CoinBad.viewSale() (#790-792)
CoinBad.sEBlock (#710) is never initialized. It is used in:
- CoinBad.viewSale() (#790-792)
CoinBad.sCap (#711) is never initialized. It is used in:
- CoinBad.viewSale() (#790-792)
CoinBad.sChunk (#713) is never initialized. It is used in:
- CoinBad.viewSale() (#790-792)
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

CoinBad.tokenSale(address) (#768-785) performs a multiplication on the result of a division:
-_tkns = (sPrice * _eth) / 1000000000000000000 (#773)
-_transfer(address(this),_refer,cmsSl * _tkns / 100) (#779)
Consider ordering multiplication before division.

Additional information: link

CoinBad.clear(uint256)._owner (#810) shadows:
- Ownable._owner (#651) (state variable)
Rename the local variables that shadow another component.

Additional information: link

CoinBad.startAirdrop(bool,uint256,uint256) (#794-799) should emit an event for:
- aAmt = _aAmt (#796)
CoinBad.startSale(bool,uint256,uint256) (#801-806) should emit an event for:
- sPrice = _sPrice (#803)
Emit an event for critical parameter changes.

Additional information: link

CoinBad.clear(uint256)._owner (#810) lacks a zero-check on :
- _owner.transfer(amount) (#811)
Check that the address is not zero.

Additional information: link

Different versions of Solidity is used:
- Version used: ['^0.8.0', '^0.8.4']
- ^0.8.4 (#9)
- ^0.8.0 (#88)
- ^0.8.0 (#117)
- ^0.8.0 (#144)
- ^0.8.0 (#502)
- ^0.8.0 (#544)
- ^0.8.0 (#636)
- ^0.8.0 (#702)
Use one Solidity version.

Additional information: link

Context._msgData() (#134-137) is never used and should be removed
Pausable._pause() (#614-617) is never used and should be removed
Pausable._unpause() (#626-629) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version^0.8.0 (#88) allows old versions
Pragma version^0.8.0 (#117) allows old versions
Pragma version^0.8.0 (#144) allows old versions
Pragma version^0.8.0 (#502) allows old versions
Pragma version^0.8.0 (#544) allows old versions
Pragma version^0.8.0 (#636) allows old versions
Pragma version^0.8.0 (#702) 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

Parameter CoinBad.getAirdrop(address)._refer (#743) is not in mixedCase
Parameter CoinBad.setLock(bool)._isLock (#764) is not in mixedCase
Parameter CoinBad.tokenSale(address)._refer (#768) is not in mixedCase
Parameter CoinBad.startAirdrop(bool,uint256,uint256)._isDrop (#794) is not in mixedCase
Parameter CoinBad.startAirdrop(bool,uint256,uint256)._aAmt (#794) is not in mixedCase
Parameter CoinBad.startAirdrop(bool,uint256,uint256)._cmsAi (#794) is not in mixedCase
Parameter CoinBad.startSale(bool,uint256,uint256)._isBuy (#801) is not in mixedCase
Parameter CoinBad.startSale(bool,uint256,uint256)._sPrice (#801) is not in mixedCase
Parameter CoinBad.startSale(bool,uint256,uint256)._cmsSl (#801) is not in mixedCase
Parameter CoinBad.clearToken(IERC20)._token (#818) is not in mixedCase
Variable CoinBad._listClaim (#729) is not in mixedCase
Variable CoinBad._listBuy (#730) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#135)" inContext (#129-138)
Remove redundant statements if they congest code but offer no value.

Additional information: link

CoinBad.constructor() (#731-738) uses literals with too many digits:
- _mint(msg.sender,900000000 * 10 ** decimals()) (#732)
CoinBad.constructor() (#731-738) uses literals with too many digits:
- _mint(address(this),200000000 * 10 ** decimals()) (#733)
CoinBad.constructor() (#731-738) uses literals with too many digits:
- startSale(true,100000 * 10 ** decimals(),20) (#737)
CoinBad.getAirdrop(address) (#743-758) uses literals with too many digits:
- msg.sender != _refer && balanceOf(_refer) != 0 && _refer != 0x0000000000000000000000000000000000000000 (#752)
CoinBad.tokenSale(address) (#768-785) uses literals with too many digits:
- msg.sender != _refer && balanceOf(_refer) != 0 && _refer != 0x0000000000000000000000000000000000000000 (#777)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

CoinBad.aCap (#706) should be constant
CoinBad.aEBlock (#705) should be constant
CoinBad.aSBlock (#704) should be constant
CoinBad.sCap (#711) should be constant
CoinBad.sChunk (#713) should be constant
CoinBad.sEBlock (#710) should be constant
CoinBad.sSBlock (#709) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

name() should be declared external:
- ERC20.name() (#227-229)
symbol() should be declared external:
- ERC20.symbol() (#235-237)
islocks() should be declared external:
- ERC20.islocks() (#256-258)
totalSupply() should be declared external:
- ERC20.totalSupply() (#267-269)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#286-290)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#321-324)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#339-348)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#362-365)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#381-387)
burn(uint256) should be declared external:
- ERC20Burnable.burn(uint256) (#517-519)
burnFrom(address,uint256) should be declared external:
- ERC20Burnable.burnFrom(address,uint256) (#532-537)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#686-689)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#695-699)
getAirdrop(address) should be declared external:
- CoinBad.getAirdrop(address) (#743-758)
addSender(address) should be declared external:
- CoinBad.addSender(address) (#760-762)
setLock(bool) should be declared external:
- CoinBad.setLock(bool) (#764-766)
tokenSale(address) should be declared external:
- CoinBad.tokenSale(address) (#768-785)
viewAirdrop() should be declared external:
- CoinBad.viewAirdrop() (#787-789)
viewSale() should be declared external:
- CoinBad.viewSale() (#790-792)
clear(uint256) should be declared external:
- CoinBad.clear(uint256) (#809-812)
clearToken(IERC20) should be declared external:
- CoinBad.clearToken(IERC20) (#818-820)
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.

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