Vault [Vault-Tec DAO] Token

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

Contract name (Vault-Tec DAO) contains non-alphanumeric characters.
Not a direct threat, but may indicate unreliable intentions of developer. Non-alphanumeric chars (,.;!#*&") are extremely rare among low risk tokens.

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.

Vault._beforeTokenTransfer(address,address,uint256) (#918-929) uses tx.origin for authorization: buyDelayBlock > 0 && lastBuy[tx.origin] > 0 (#924)
Vault._beforeTokenTransfer(address,address,uint256) (#918-929) uses tx.origin for authorization: require(bool,string)(lastBuy[tx.origin] + buyDelayBlock <= block.number,delay block) (#925)
Do not use tx.origin for authorization.

Additional information: link

EnumerableSet.getValues(EnumerableSet.AddressSet).addressArray (#316) is a local variable never initialized
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

VaultOwned.setVault(address) (#857-861) should emit an event for:
- _vault = vault_ (#858)
Emit an event for critical parameter changes.

Additional information: link

Vault.setMaxBuyAmount(uint256) (#931-933) should emit an event for:
- maxBuyAmount = _maxBuyAmount (#932)
Vault.setBuyDelayBlock(uint256) (#939-942) should emit an event for:
- buyDelayBlock = _buyDelayBlock (#941)
Emit an event for critical parameter changes.

Additional information: link

VaultOwned.setVault(address).vault_ (#857) lacks a zero-check on :
- _vault = vault_ (#858)
Check that the address is not zero.

Additional information: link

ERC20Permit.permit(address,address,uint256,uint256,uint8,bytes32,bytes32) (#785-806) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(block.timestamp <= deadline,Permit: expired deadline) (#794)
Avoid relying on block.timestamp.

Additional information: link

ERC20Permit.constructor() (#768-783) uses assembly
- INLINE ASM (#770-772)
Do not use evm assembly.

Additional information: link

Counters.decrement(Counters.Counter) (#738-740) is never used and should be removed
ERC20._beforeTokenTransfer(address,address,uint256) (#720) is never used and should be removed
EnumerableSet._add(EnumerableSet.Set,bytes32) (#29-39) is never used and should be removed
EnumerableSet._at(EnumerableSet.Set,uint256) (#105-108) is never used and should be removed
EnumerableSet._contains(EnumerableSet.Set,bytes32) (#84-86) is never used and should be removed
EnumerableSet._getValues(EnumerableSet.Set) (#110-112) is never used and should be removed
EnumerableSet._insert(EnumerableSet.Set,uint256,bytes32) (#119-125) is never used and should be removed
EnumerableSet._length(EnumerableSet.Set) (#91-93) is never used and should be removed
EnumerableSet._remove(EnumerableSet.Set,bytes32) (#47-79) is never used and should be removed
EnumerableSet.add(EnumerableSet.AddressSet,address) (#268-270) is never used and should be removed
EnumerableSet.add(EnumerableSet.Bytes32Set,bytes32) (#201-203) is never used and should be removed
EnumerableSet.add(EnumerableSet.Bytes4Set,bytes4) (#137-139) is never used and should be removed
EnumerableSet.add(EnumerableSet.UInt256Set,uint256) (#394-396) is never used and should be removed
EnumerableSet.add(EnumerableSet.UintSet,uint256) (#342-344) is never used and should be removed
EnumerableSet.at(EnumerableSet.AddressSet,uint256) (#306-308) is never used and should be removed
EnumerableSet.at(EnumerableSet.Bytes32Set,uint256) (#239-241) is never used and should be removed
EnumerableSet.at(EnumerableSet.Bytes4Set,uint256) (#175-177) is never used and should be removed
EnumerableSet.at(EnumerableSet.UInt256Set,uint256) (#432-434) is never used and should be removed
EnumerableSet.at(EnumerableSet.UintSet,uint256) (#380-382) is never used and should be removed
EnumerableSet.contains(EnumerableSet.AddressSet,address) (#285-287) is never used and should be removed
EnumerableSet.contains(EnumerableSet.Bytes32Set,bytes32) (#218-220) is never used and should be removed
EnumerableSet.contains(EnumerableSet.Bytes4Set,bytes4) (#154-156) is never used and should be removed
EnumerableSet.contains(EnumerableSet.UInt256Set,uint256) (#411-413) is never used and should be removed
EnumerableSet.contains(EnumerableSet.UintSet,uint256) (#359-361) is never used and should be removed
EnumerableSet.getValues(EnumerableSet.AddressSet) (#314-323) is never used and should be removed
EnumerableSet.getValues(EnumerableSet.Bytes32Set) (#243-251) is never used and should be removed
EnumerableSet.getValues(EnumerableSet.Bytes4Set) (#179-185) is never used and should be removed
EnumerableSet.insert(EnumerableSet.AddressSet,uint256,address) (#325-327) is never used and should be removed
EnumerableSet.insert(EnumerableSet.Bytes32Set,uint256,bytes32) (#253-255) is never used and should be removed
EnumerableSet.insert(EnumerableSet.Bytes4Set,uint256,bytes4) (#187-189) is never used and should be removed
EnumerableSet.length(EnumerableSet.AddressSet) (#292-294) is never used and should be removed
EnumerableSet.length(EnumerableSet.Bytes32Set) (#225-227) is never used and should be removed
EnumerableSet.length(EnumerableSet.Bytes4Set) (#161-163) is never used and should be removed
EnumerableSet.length(EnumerableSet.UInt256Set) (#418-420) is never used and should be removed
EnumerableSet.length(EnumerableSet.UintSet) (#366-368) is never used and should be removed
EnumerableSet.remove(EnumerableSet.AddressSet,address) (#278-280) is never used and should be removed
EnumerableSet.remove(EnumerableSet.Bytes32Set,bytes32) (#211-213) is never used and should be removed
EnumerableSet.remove(EnumerableSet.Bytes4Set,bytes4) (#147-149) is never used and should be removed
EnumerableSet.remove(EnumerableSet.UInt256Set,uint256) (#404-406) is never used and should be removed
EnumerableSet.remove(EnumerableSet.UintSet,uint256) (#352-354) is never used and should be removed
SafeMath.average(uint256,uint256) (#586-589) is never used and should be removed
SafeMath.bondingCurve(uint256,uint256) (#595-597) is never used and should be removed
SafeMath.div(uint256,uint256) (#540-542) is never used and should be removed
SafeMath.div(uint256,uint256,string) (#544-550) is never used and should be removed
SafeMath.mod(uint256,uint256) (#552-554) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#556-559) is never used and should be removed
SafeMath.mul(uint256,uint256) (#528-538) is never used and should be removed
SafeMath.percentageAmount(uint256,uint8) (#574-576) is never used and should be removed
SafeMath.percentageOfTotal(uint256,uint256) (#582-584) is never used and should be removed
SafeMath.quadraticPricing(uint256,uint256) (#591-593) is never used and should be removed
SafeMath.sqrrt(uint256) (#561-572) is never used and should be removed
SafeMath.substractPercentage(uint256,uint8) (#578-580) is never used and should be removed
Remove unused functions.

Additional information: link

Variable ERC20._balances (#608) is not in mixedCase
Variable ERC20._allowances (#611) is not in mixedCase
Variable ERC20._totalSupply (#614) is not in mixedCase
Variable ERC20._name (#617) is not in mixedCase
Variable ERC20._symbol (#620) is not in mixedCase
Variable ERC20._decimals (#623) is not in mixedCase
Variable ERC20Permit.DOMAIN_SEPARATOR (#766) is not in mixedCase
Variable Ownable._owner (#823) is not in mixedCase
Variable VaultOwned._vault (#855) is not in mixedCase
Function Vault._burnFrom(address,uint256) (#899-908) is not in mixedCase
Parameter Vault.setMaxBuyAmount(uint256)._maxBuyAmount (#931) is not in mixedCase
Parameter Vault.setAllowBuy(bool)._allowBuy (#935) is not in mixedCase
Parameter Vault.setBuyDelayBlock(uint256)._buyDelayBlock (#939) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

ERC20.ERC20TOKEN_ERC1820_INTERFACE_ID (#605) is never used in Vault (#880-944)
Remove unused state variables.

Additional information: link

symbol() should be declared external:
- ERC20.symbol() (#635-637)
decimals() should be declared external:
- ERC20.decimals() (#639-641)
totalSupply() should be declared external:
- ERC20.totalSupply() (#643-645)
balanceOf(address) should be declared external:
- ERC20.balanceOf(address) (#647-649)
transfer(address,uint256) should be declared external:
- ERC20.transfer(address,uint256) (#651-654)
approve(address,uint256) should be declared external:
- ERC20.approve(address,uint256) (#660-663)
transferFrom(address,address,uint256) should be declared external:
- ERC20.transferFrom(address,address,uint256) (#665-669)
increaseAllowance(address,uint256) should be declared external:
- ERC20.increaseAllowance(address,uint256) (#671-674)
decreaseAllowance(address,uint256) should be declared external:
- ERC20.decreaseAllowance(address,uint256) (#676-679)
permit(address,address,uint256,uint256,uint8,bytes32,bytes32) should be declared external:
- ERC20Permit.permit(address,address,uint256,uint256,uint8,bytes32,bytes32) (#785-806)
nonces(address) should be declared external:
- ERC20Permit.nonces(address) (#808-810)
owner() should be declared external:
- Ownable.owner() (#832-834)
renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#841-844)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#846-850)
vault() should be declared external:
- VaultOwned.vault() (#866-868)
burn(uint256) should be declared external:
- Vault.burn(uint256) (#891-893)
burnFrom(address,uint256) should be declared external:
- Vault.burnFrom(address,uint256) (#895-897)
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