Zilliqa Token (ZIL) security audit, conducted by the Callisto Network Security Department in April 2019.
Zilliqa (ZIL) Specificities
Audit Top 200 CoinMarketCap tokens.
Symbol : ZIL Name : Zilliqa
Circulating Supply: 8 750 823 775
Total Supply: 12 599 999 804
Number of lines:
Zilliqa Token (ZIL) Smart Contract Security Audit Report
Are Your Funds Safe?
1. In scope
In total, 3 issues were reported including:
- 3 low severity issues.
2.1. Known vulnerabilities of ERC-20 token
- It is possible to double withdrawal attack. More details here
- Lack of transaction handling mechanism issue. WARNING! This is a very common issue and it already caused millions of dollars losses for lots of token users! More details here.
Add the following code to the
transfer(_to address, ...)function:
require( _to != address(this) );
2.2. Transfer Admin to zero address
Possibility of setting zero address as
Need to check if newOwner address is not zero address.
require( newAdmin != address(0) );
2.3. Owner Privileges
The contract owner allow himself:
- to pause functions of contract (transfer, transferFrom, approve, increaseApproval, decreaseApproval), besides burn function;
- Evacuate Tokens at any time.
The contract is managed manually by the owner which is not good for investors.
The audited smart contract can be deployed. Only low severity issues were found during the audit.
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