NULS Vulnerability in transaction signature: $480.00K Reported Loss
The well-known public chain NULS suffered a hacker attack and lost nearly $480,000 worth of NULS tokens.
- Reported loss
- $ 480,000
- Attack category
- Vulnerability in transaction signature verification algorithm
Incident Overview
The SlowMist security team analyzed and found that the reason for the attack was that there was a loophole in the NULS transaction signature verification algorithm. The hacker bypassed the signature verification by using a carefully constructed transaction, transferred the tokens of the team account, and then some tokens were thrown into the market. , At present, major exchanges have suspended the deposit and withdrawal of NULS. After the attack, the official urgently checked the problem, carried out problem repair and code testing, and then released a new version of the program, and scheduled a hard fork at the height of 878000 (about noon on December 25th, Beijing time) to freeze other tokens that have not flowed into the market.
Sources & References
This record presents information attributed to the linked sources. Incident dates describe the original event, not a new report. Reported loss figures reflect the source record and are not current market valuations.