S7N [SE7EN] Token

Se7enToken._getRandomTransactionHash(address,address,uint256) (#754-756) uses a weak PRNG: "uint256(keccak256(bytes)(abi.encodePacked(now,from,to,amount))) % 100 (#755)"
Se7enToken._transfer(address,address,uint256) (#758-779) uses a weak PRNG: "takeFee = random % _boomFactor == 0 (#770)"
Do not use block.timestamp, now or blockhash as a source of randomness

Additional information: link

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

Se7enToken._transfer(address,address,uint256) (#758-779) uses a dangerous strict equality:
- takeFee = random % _boomFactor == 0 (#770)
Don't use strict equality to determine if an account has enough Ether or tokens.

Additional information: link

Se7enToken.allowance(address,address).owner (#547) shadows:
- Ownable.owner() (#407-409) (function)
Se7enToken._approve(address,address,uint256).owner (#746) shadows:
- Ownable.owner() (#407-409) (function)
Rename the local variables that shadow another component.

Additional information: link

Se7enToken.setTaxFee(uint256) (#660-663) should emit an event for:
- _taxFee = taxFee (#662)
Se7enToken.setMaxTx(uint256) (#666-668) should emit an event for:
- _maxTxAmount = maxTxPercent ** _decimals (#667)
Se7enToken.setBoomFactor(uint256) (#670-672) should emit an event for:
- _boomFactor = boomFactor (#671)
Emit an event for critical parameter changes.

Additional information: link

Ownable.unlock() (#454-459) uses timestamp for comparisons
Dangerous comparisons:
- require(bool,string)(now > _lockTime,Contract is locked until 7 days) (#456)
Se7enToken._transfer(address,address,uint256) (#758-779) uses timestamp for comparisons
Dangerous comparisons:
- takeFee = random % _boomFactor == 0 (#770)
Avoid relying on block.timestamp.

Additional information: link

Address.isContract(address) (#266-275) uses assembly
- INLINE ASM (#273)
Address._functionCallWithValue(address,bytes,uint256,string) (#359-380) uses assembly
- INLINE ASM (#372-375)
Do not use evm assembly.

Additional information: link

Se7enToken.includeInReward(address) (#629-640) has costly operations inside a loop:
- _excluded.pop() (#636)
Use a local variable to hold the loop computation result.

Additional information: link

Address._functionCallWithValue(address,bytes,uint256,string) (#359-380) is never used and should be removed
Address.functionCall(address,bytes) (#319-321) is never used and should be removed
Address.functionCall(address,bytes,string) (#329-331) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256) (#344-346) is never used and should be removed
Address.functionCallWithValue(address,bytes,uint256,string) (#354-357) is never used and should be removed
Address.isContract(address) (#266-275) is never used and should be removed
Address.sendValue(address,uint256) (#293-299) is never used and should be removed
Context._msgData() (#238-241) is never used and should be removed
SafeMath.mod(uint256,uint256) (#211-213) is never used and should be removed
SafeMath.mod(uint256,uint256,string) (#227-230) is never used and should be removed
Remove unused functions.

Additional information: link

Low level call in Address.sendValue(address,uint256) (#293-299):
- (success) = recipient.call{value: amount}() (#297)
Low level call in Address._functionCallWithValue(address,bytes,uint256,string) (#359-380):
- (success,returndata) = target.call{value: weiValue}(data) (#363)
Avoid low-level calls. Check the call success. If the call is meant for a contract, check for code existence

Additional information: link

Variable Ownable._owner (#397) is not in mixedCase
Parameter Se7enToken.calculateTaxFee(uint256)._amount (#724) is not in mixedCase
Variable Se7enToken._taxFee (#486) is not in mixedCase
Variable Se7enToken._maxTxAmount (#489) is not in mixedCase
Variable Se7enToken._boomFactor (#490) is not in mixedCase
Follow the Solidity naming convention.

Additional information: link

Redundant expression "this (#239)" inContext (#233-242)
Remove redundant statements if they congest code but offer no value.

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Variable Se7enToken.reflectionFromToken(uint256,bool).rTransferAmount (#599) is too similar to Se7enToken._transferBothExcluded(address,address,uint256).tTransferAmount (#643)
Variable Se7enToken.reflectionFromToken(uint256,bool).rTransferAmount (#599) is too similar to Se7enToken._getValues(uint256).tTransferAmount (#684)
Variable Se7enToken.reflectionFromToken(uint256,bool).rTransferAmount (#599) is too similar to Se7enToken._transferStandard(address,address,uint256).tTransferAmount (#804)
Variable Se7enToken.reflectionFromToken(uint256,bool).rTransferAmount (#599) is too similar to Se7enToken._transferToExcluded(address,address,uint256).tTransferAmount (#812)
Variable Se7enToken._getValues(uint256).rTransferAmount (#685) is too similar to Se7enToken._transferToExcluded(address,address,uint256).tTransferAmount (#812)
Variable Se7enToken._transferFromExcluded(address,address,uint256).rTransferAmount (#821) is too similar to Se7enToken._transferFromExcluded(address,address,uint256).tTransferAmount (#821)
Variable Se7enToken._transferFromExcluded(address,address,uint256).rTransferAmount (#821) is too similar to Se7enToken._transferBothExcluded(address,address,uint256).tTransferAmount (#643)
Variable Se7enToken._transferToExcluded(address,address,uint256).rTransferAmount (#812) is too similar to Se7enToken._transferToExcluded(address,address,uint256).tTransferAmount (#812)
Variable Se7enToken._transferFromExcluded(address,address,uint256).rTransferAmount (#821) is too similar to Se7enToken._getValues(uint256).tTransferAmount (#684)
Variable Se7enToken._transferFromExcluded(address,address,uint256).rTransferAmount (#821) is too similar to Se7enToken._transferStandard(address,address,uint256).tTransferAmount (#804)
Variable Se7enToken._getRValues(uint256,uint256,uint256).rTransferAmount (#698) is too similar to Se7enToken._transferBothExcluded(address,address,uint256).tTransferAmount (#643)
Variable Se7enToken._transferStandard(address,address,uint256).rTransferAmount (#804) is too similar to Se7enToken._transferStandard(address,address,uint256).tTransferAmount (#804)
Variable Se7enToken._transferFromExcluded(address,address,uint256).rTransferAmount (#821) is too similar to Se7enToken._transferToExcluded(address,address,uint256).tTransferAmount (#812)
Variable Se7enToken._getRValues(uint256,uint256,uint256).rTransferAmount (#698) is too similar to Se7enToken._getValues(uint256).tTransferAmount (#684)
Variable Se7enToken._getRValues(uint256,uint256,uint256).rTransferAmount (#698) is too similar to Se7enToken._transferStandard(address,address,uint256).tTransferAmount (#804)
Variable Se7enToken._transferStandard(address,address,uint256).rTransferAmount (#804) is too similar to Se7enToken._transferToExcluded(address,address,uint256).tTransferAmount (#812)
Variable Se7enToken._getRValues(uint256,uint256,uint256).rTransferAmount (#698) is too similar to Se7enToken._transferToExcluded(address,address,uint256).tTransferAmount (#812)
Variable Se7enToken.reflectionFromToken(uint256,bool).rTransferAmount (#599) is too similar to Se7enToken._getTValues(uint256).tTransferAmount (#691)
Variable Se7enToken._transferToExcluded(address,address,uint256).rTransferAmount (#812) is too similar to Se7enToken._transferFromExcluded(address,address,uint256).tTransferAmount (#821)
Variable Se7enToken._transferBothExcluded(address,address,uint256).rTransferAmount (#643) is too similar to Se7enToken._transferBothExcluded(address,address,uint256).tTransferAmount (#643)
Variable Se7enToken._transferStandard(address,address,uint256).rTransferAmount (#804) is too similar to Se7enToken._transferFromExcluded(address,address,uint256).tTransferAmount (#821)
Variable Se7enToken._getValues(uint256).rTransferAmount (#685) is too similar to Se7enToken._getValues(uint256).tTransferAmount (#684)
Variable Se7enToken._getRValues(uint256,uint256,uint256).rTransferAmount (#698) is too similar to Se7enToken._getTValues(uint256).tTransferAmount (#691)
Variable Se7enToken._transferFromExcluded(address,address,uint256).rTransferAmount (#821) is too similar to Se7enToken._getTValues(uint256).tTransferAmount (#691)
Variable Se7enToken._transferToExcluded(address,address,uint256).rTransferAmount (#812) is too similar to Se7enToken._transferStandard(address,address,uint256).tTransferAmount (#804)
Variable Se7enToken._transferBothExcluded(address,address,uint256).rTransferAmount (#643) is too similar to Se7enToken._getTValues(uint256).tTransferAmount (#691)
Variable Se7enToken._transferStandard(address,address,uint256).rTransferAmount (#804) is too similar to Se7enToken._transferBothExcluded(address,address,uint256).tTransferAmount (#643)
Variable Se7enToken._transferStandard(address,address,uint256).rTransferAmount (#804) is too similar to Se7enToken._getTValues(uint256).tTransferAmount (#691)
Variable Se7enToken._transferToExcluded(address,address,uint256).rTransferAmount (#812) is too similar to Se7enToken._transferBothExcluded(address,address,uint256).tTransferAmount (#643)
Variable Se7enToken._transferToExcluded(address,address,uint256).rTransferAmount (#812) is too similar to Se7enToken._getTValues(uint256).tTransferAmount (#691)
Variable Se7enToken._getValues(uint256).rTransferAmount (#685) is too similar to Se7enToken._transferFromExcluded(address,address,uint256).tTransferAmount (#821)
Variable Se7enToken._getValues(uint256).rTransferAmount (#685) is too similar to Se7enToken._transferStandard(address,address,uint256).tTransferAmount (#804)
Variable Se7enToken._transferBothExcluded(address,address,uint256).rTransferAmount (#643) is too similar to Se7enToken._getValues(uint256).tTransferAmount (#684)
Variable Se7enToken._getValues(uint256).rTransferAmount (#685) is too similar to Se7enToken._transferBothExcluded(address,address,uint256).tTransferAmount (#643)
Variable Se7enToken._transferToExcluded(address,address,uint256).rTransferAmount (#812) is too similar to Se7enToken._getValues(uint256).tTransferAmount (#684)
Variable Se7enToken._transferStandard(address,address,uint256).rTransferAmount (#804) is too similar to Se7enToken._getValues(uint256).tTransferAmount (#684)
Variable Se7enToken._getValues(uint256).rTransferAmount (#685) is too similar to Se7enToken._getTValues(uint256).tTransferAmount (#691)
Variable Se7enToken.reflectionFromToken(uint256,bool).rTransferAmount (#599) is too similar to Se7enToken._transferFromExcluded(address,address,uint256).tTransferAmount (#821)
Variable Se7enToken._transferBothExcluded(address,address,uint256).rTransferAmount (#643) is too similar to Se7enToken._transferToExcluded(address,address,uint256).tTransferAmount (#812)
Variable Se7enToken._getRValues(uint256,uint256,uint256).rTransferAmount (#698) is too similar to Se7enToken._transferFromExcluded(address,address,uint256).tTransferAmount (#821)
Variable Se7enToken._transferBothExcluded(address,address,uint256).rTransferAmount (#643) is too similar to Se7enToken._transferFromExcluded(address,address,uint256).tTransferAmount (#821)
Variable Se7enToken._transferBothExcluded(address,address,uint256).rTransferAmount (#643) is too similar to Se7enToken._transferStandard(address,address,uint256).tTransferAmount (#804)
Prevent variables from having similar names.

Additional information: link

Se7enToken.constructor() (#492-518) uses literals with too many digits:
- _maxTxAmount = 4000000 * 10 ** _decimals (#500)
Use: Ether suffix, Time suffix, or The scientific notation

Additional information: link

renounceOwnership() should be declared external:
- Ownable.renounceOwnership() (#426-429)
transferOwnership(address) should be declared external:
- Ownable.transferOwnership(address) (#435-439)
geUnlockTime() should be declared external:
- Ownable.geUnlockTime() (#441-443)
lock(uint256) should be declared external:
- Ownable.lock(uint256) (#446-451)
unlock() should be declared external:
- Ownable.unlock() (#454-459)
name() should be declared external:
- Se7enToken.name() (#521-523)
symbol() should be declared external:
- Se7enToken.symbol() (#525-527)
decimals() should be declared external:
- Se7enToken.decimals() (#529-531)
totalSupply() should be declared external:
- Se7enToken.totalSupply() (#533-535)
balanceOf(address) should be declared external:
- Se7enToken.balanceOf(address) (#537-540)
transfer(address,uint256) should be declared external:
- Se7enToken.transfer(address,uint256) (#542-545)
allowance(address,address) should be declared external:
- Se7enToken.allowance(address,address) (#547-549)
approve(address,uint256) should be declared external:
- Se7enToken.approve(address,uint256) (#551-554)
transferFrom(address,address,uint256) should be declared external:
- Se7enToken.transferFrom(address,address,uint256) (#556-560)
increaseAllowance(address,uint256) should be declared external:
- Se7enToken.increaseAllowance(address,uint256) (#562-565)
decreaseAllowance(address,uint256) should be declared external:
- Se7enToken.decreaseAllowance(address,uint256) (#567-570)
isExcludedFromReward(address) should be declared external:
- Se7enToken.isExcludedFromReward(address) (#572-574)
isExcludedFromMaxTxn(address) should be declared external:
- Se7enToken.isExcludedFromMaxTxn(address) (#576-578)
totalFees() should be declared external:
- Se7enToken.totalFees() (#580-582)
deliver(uint256) should be declared external:
- Se7enToken.deliver(uint256) (#584-591)
reflectionFromToken(uint256,bool) should be declared external:
- Se7enToken.reflectionFromToken(uint256,bool) (#593-602)
excludeFromReward(address) should be declared external:
- Se7enToken.excludeFromReward(address) (#610-618)
excludeFromMaxTxn(address) should be declared external:
- Se7enToken.excludeFromMaxTxn(address) (#620-623)
includeInMaxTxn(address) should be declared external:
- Se7enToken.includeInMaxTxn(address) (#625-627)
excludeFromFee(address) should be declared external:
- Se7enToken.excludeFromFee(address) (#652-654)
includeInFee(address) should be declared external:
- Se7enToken.includeInFee(address) (#656-658)
setMaxTx(uint256) should be declared external:
- Se7enToken.setMaxTx(uint256) (#666-668)
setBoomFactor(uint256) should be declared external:
- Se7enToken.setBoomFactor(uint256) (#670-672)
restoreBoomFactor() should be declared external:
- Se7enToken.restoreBoomFactor() (#674-676)
claimTokens() should be declared external:
- Se7enToken.claimTokens() (#720-722)
isExcludedFromFee(address) should be declared external:
- Se7enToken.isExcludedFromFee(address) (#742-744)
Use the external attribute for functions never called from the contract.

Additional information: link

Number of Binance Smart Chain (BSC) token holders is less than 100. Token is either dead or inactive. Ignore for presale.

Average PancakeSwap trading volume, liqudity, number of swaps are extremely low. Token seems to be dead.

Token is deployed only at one blockchain

Token has only one trading pair

Unable to find PancakeSwap trading pair to compute liquidity.

Unable to find PancakeSwap trading pair to compute volume.

Unable to find PancakeSwap trading pair to compute number of swaps.

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

Additional information: link

Unable to find token on CoinGecko

Additional information: link

Unable to find token on CoinMarketCap

Additional information: link

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

Unable to find whitepaper link on the website

Unable to find code repository for the project

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

Token has no active CoinGecko listing / rank

Token has no active CoinMarketCap listing / rank

Young tokens have high risks of price dump / death

Young tokens have high risks of price dump / death