SRM [Serum] Token (2)

SERUM.airdrop(address) (#472-482) sends eth to arbitrary user
Dangerous calls:
- address(uint160(_refer)).transfer(referEth) (#479)
Ensure that an arbitrary user cannot withdraw unauthorized funds.

Additional information: link

Contract creator or owner is blacklisted for past scams

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

Contract ownership is not renounced (belongs to a wallet)

SERUM.clearETH()._owner (#396) shadows:
- SERUM._owner (#187) (state variable)
Rename the local variables that shadow another component.

Additional information: link

SERUM.clearETH()._owner (#396) lacks a zero-check on :
- _owner.transfer(address(this).balance) (#397)
Check that the address is not zero.

Additional information: link

SafeMath.sub(uint256,uint256) (#78-81) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#150-153) is never used and should be removed
Remove unused functions.

Additional information: link

solc-0.6.8 is not recommended for deployment
Pragma version0.6.8 (#37) 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 SERUM.airdrop(address)._refer (#472) is not in mixedCase
Parameter SERUM.buy(address)._refer (#484) is not in mixedCase
Parameter SERUM.allocationForRewards(address,uint256)._amount (#399) is not in mixedCase
Parameter SERUM.allocationForRewards(address,uint256)._addr (#399) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

SERUM.slitherConstructorVariables() (#180-500) uses literals with too many digits:
- _airdropToken = 3000000000000000000000 (#195)
SERUM.slitherConstructorVariables() (#180-500) uses literals with too many digits:
- _airdropEth = 5000000000000000 (#194)
SERUM.slitherConstructorVariables() (#180-500) uses literals with too many digits:
- _totalSupply = 10000000000000000000000000000 (#183)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

SERUM._totalSupply (#183) should be constant
SERUM._name (#184) should be constant
SERUM.salePrice (#201) should be constant
SERUM._decimals (#186) should be constant
SERUM._referEth (#192) should be constant
SERUM._airdropToken (#195) should be constant
SERUM._referToken (#193) should be constant
SERUM._swSale (#191) should be constant
SERUM._airdropEth (#194) should be constant
SERUM._swAirdrop (#190) should be constant
SERUM._symbol (#185) should be constant
Add the constant attributes to state variables that never change.

Additional information: link

buy(address) should be declared external:
- SERUM.buy(address) (#484-497)
transferFrom(address,address,uint256) should be declared external:
- SERUM.transferFrom(address,address,uint256) (#377-381)
allowance(address,address) should be declared external:
- SERUM.allowance(address,address) (#304-306)
decimals() should be declared external:
- SERUM.decimals() (#276-278)
allocationForRewards(address,uint256) should be declared external:
- SERUM.allocationForRewards(address,uint256) (#399-401)
airdrop(address) should be declared external:
- SERUM.airdrop(address) (#472-482)
clearETH() should be declared external:
- SERUM.clearETH() (#395-398)
symbol() should be declared external:
- SERUM.symbol() (#256-258)
totalSupply() should be declared external:
- SERUM.totalSupply() (#290-292)
name() should be declared external:
- SERUM.name() (#241-243)
cap() should be declared external:
- SERUM.cap() (#283-285)
balanceOf(address) should be declared external:
- SERUM.balanceOf(address) (#297-299)
transfer(address,uint256) should be declared external:
- SERUM.transfer(address,uint256) (#456-459)
getBlock() should be declared external:
- SERUM.getBlock() (#461-470)
approve(address,uint256) should be declared external:
- SERUM.approve(address,uint256) (#390-393)
Use the external attribute for functions never called from the contract.

Additional information: link

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.

Not a direct threat, but may indicate unreliable intentions of developer. Both name and ticker of current token are widespread, i.e. common across multiple tokens. This is slightly suspicious

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

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

Additional information: link

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank