SQUID [Squid Game] Token

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

Contract creator or owner is blacklisted for past scams

Ownable.__gap (#688) shadows:
- Context.__gap (#607)
ERC20.__gap (#998) shadows:
- Context.__gap (#607)
Remove the state variable shadowing.

Additional information: link

Contract locking ether found:
Contract SQUID (#214-253) has payable functions:
- ApprovedEngine.constructor(address) (#182-185)
- Engine.fallback() (#145-147)
- Engine.receive() (#149-151)
- SQUID.constructor(address,address) (#215-226)
But does not have a function to withdraw the ether
Remove the payable attribute or add a withdraw function.

Additional information: link

Modifier SQUID.ifSir() (#230-236) does not always execute _; or revert
All the paths in a modifier must execute _ or revert.

Additional information: link

Redundant expression "this (#603)" inContext (#586-608)
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 (#1011) is too similar to IUniswapV2Router01.addLiquidity(address,address,uint256,uint256,uint256,uint256,address,uint256).amountBDesired (#1012)
Prevent variables from having similar names.

Additional information: link

Low level call in Address.sendValue(address,uint256) (#15-21):
- (success) = recipient.call{value: amount}() (#19)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#53-79):
- (success,returndata) = target.call{value: weiValue}(data) (#62)
Low level call in SafeERC20.safeTransferETH(address,uint256) (#518-521):
- (success) = to.call{value: value}(new bytes(0)) (#519)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Different versions of Solidity is used:
- Version used: ['0.6.12', '>=0.4.24<0.7.0', '>=0.6.0<0.8.0', '^0.6.0']
- 0.6.12 (#3)
- >=0.4.24<0.7.0 (#82)
- ^0.6.0 (#256)
- ^0.6.0 (#416)
- ^0.6.0 (#495)
- ^0.6.0 (#574)
- ^0.6.0 (#613)
- >=0.6.0<0.8.0 (#694)
- ^0.6.0 (#1099)
- 0.6.12 (#1164)
Use one Solidity version.

Additional information: link

Initializable.______gap (#141) is never used in SQUIDToken (#1166-1188)
Ownable.__gap (#688) is never used in SQUIDToken (#1166-1188)
Remove unused state variables.

Additional information: link

ERC20._burn(address,uint256) (#941-949) uses literals with too many digits:
- _beforeTokenTransfer(account,0x000000000000000000000000000000000000dEaD,amount) (#944)
ERC20._burn(address,uint256) (#941-949) uses literals with too many digits:
- _balances[0x000000000000000000000000000000000000dEaD] = _balances[0x000000000000000000000000000000000000dEaD].add(amount) (#947)
ERC20._burn(address,uint256) (#941-949) uses literals with too many digits:
- Transfer(account,0x000000000000000000000000000000000000dEaD,amount) (#948)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

owner() should be declared external:
- Ownable.owner() (#654-656)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#673-676)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#682-686)
name() should be declared external:
- ERC20.name() (#756-758)
symbol() should be declared external:
- ERC20.symbol() (#764-766)
decimals() should be declared external:
- ERC20.decimals() (#781-783)
totalSupply() should be declared external:
- ERC20.totalSupply() (#788-790)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (#795-797)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#807-810)
allowance(address,address) should be declared external:
- ERC20.allowance(address,address) (#815-817)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#826-829)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#844-848)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#862-865)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#881-884)
initialize() should be declared external:
- SQUIDToken.initialize() (#1173-1186)
Use the external attribute for functions never called from the contract.

Additional information: link

SQUID.constructor(address,address)._sir (#217) shadows:
- SQUID._sir() (#242-247) (function)
Rename the local variables that shadow another component.

Additional information: link

Address.isContract(address) (#6-13) uses assembly
- INLINE ASM (#9-11)
Address._functionCallWithValue(address,bytes,uint256,string) (#53-79) uses assembly
- INLINE ASM (#71-74)
Initializable.isConstructor() (#128-138) uses assembly
- INLINE ASM (#136)
Engine._delegate(address) (#155-171) uses assembly
- INLINE ASM (#156-170)
ApprovedEngine._implementation() (#191-196) uses assembly
- INLINE ASM (#193-195)
ApprovedEngine._setImplementation(address) (#203-211) uses assembly
- INLINE ASM (#208-210)
SQUID.constructor(address,address) (#215-226) uses assembly
- INLINE ASM (#223-225)
SQUID._sir() (#242-247) uses assembly
- INLINE ASM (#244-246)
Do not use evm assembly.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#53-79) is never used and should be removed
Address.functionCall(address,bytes) (#23-25) is never used and should be removed
Address.functionCall(address,bytes,string) (#27-33) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#35-41) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#43-51) is never used and should be removed
Address.sendValue(address,uint256) (#15-21) is never used and should be removed
Context.__Context_init() (#590-592) is never used and should be removed
Context._msgData() (#602-605) is never used and should be removed
ERC20._burn(address,uint256) (#941-949) is never used and should be removed
Engine._implementation() (#153) is never used and should be removed
SafeERC20._callOptionalReturn(IERC20,bytes) (#557-567) is never used and should be removed
SafeERC20.safeApprove(IERC20,address,uint256) (#530-539) is never used and should be removed
SafeERC20.safeDecreaseAllowance(IERC20,address,uint256) (#546-549) is never used and should be removed
SafeERC20.safeIncreaseAllowance(IERC20,address,uint256) (#541-544) is never used and should be removed
SafeERC20.safeTransfer(IERC20,address,uint256) (#510-512) is never used and should be removed
SafeERC20.safeTransferETH(address,uint256) (#518-521) is never used and should be removed
SafeERC20.safeTransferFrom(IERC20,address,address,uint256) (#514-516) is never used and should be removed
SafeMath.div(uint256,uint256) (#356-358) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#372-378) is never used and should be removed
SafeMath.mod(uint256,uint256) (#392-394) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#408-411) is never used and should be removed
SafeMath.mul(uint256,uint256) (#330-342) is never used and should be removed
SafeMath.sub(uint256,uint256) (#299-301) is never used and should be removed
Remove unused functions.

Additional information: link

Pragma version>=0.4.24<0.7.0 (#82) allows old versions
Pragma version^0.6.0 (#256) allows old versions
Pragma version^0.6.0 (#416) allows old versions
Pragma version^0.6.0 (#495) allows old versions
Pragma version^0.6.0 (#574) allows old versions
Pragma version^0.6.0 (#613) allows old versions
Pragma version>=0.6.0<0.8.0 (#694) is too complex
Pragma version^0.6.0 (#1099) 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

Variable Initializable.______gap (#141) is not in mixedCase
Function Context.__Context_init() (#590-592) is not in mixedCase
Function Context.__Context_init_unchained() (#594-595) is not in mixedCase
Variable Context.__gap (#607) is not in mixedCase
Function Ownable.__Ownable_init() (#636-639) is not in mixedCase
Function Ownable.__Ownable_init_unchained() (#641-648) is not in mixedCase
Variable Ownable.__gap (#688) is not in mixedCase
Function ERC20.__ERC20_init(string,string) (#742-745) is not in mixedCase
Function ERC20.__ERC20_init_unchained(string,string) (#747-751) is not in mixedCase
Variable ERC20.__gap (#998) is not in mixedCase
Variable ERC20._balances (#723) is not in mixedCase
Variable ERC20._allowances (#725) is not in mixedCase
Variable ERC20._totalSupply (#727) is not in mixedCase
Variable ERC20._name (#729) is not in mixedCase
Variable ERC20._symbol (#730) is not in mixedCase
Variable ERC20._decimals (#731) is not in mixedCase
Function IUniswapV2Router01.WETH() (#1006) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Token is deployed only at one blockchain

BscScan page for the token does not contain additional info: website, socials, description, etc.

Additional information: link

Unable to find token/project description on the website or on BscScan, CoinMarketCap

Unable to find token contract audit

Unable to find audit link on the website

Token is not listed at Mobula.Finance

Additional information: link

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

Additional information: link

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

Token has relatively low CoinGecko 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