The 2016 Bitfinex exchange Bitcoin theft case has once again drawn attention. Hacker Ilya Lichtenstein was sentenced in November 2024 for assisting in money laundering of nearly 120,000 Bitcoins (worth approximately $4.5 billion at the time of the incident). However, he was recently released early. This turning point is closely related to a U.S. federal law—the First Step Act. This legislation allows inmates to earn sentence reductions through participation in rehabilitation programs. Lichtenstein achieved a shortened sentence through this mechanism. This case highlights the severity of security issues in crypto assets. The theft once shocked the entire crypto community and also served as a reminder for exchanges and users to strengthen asset protection. At the same time, it demonstrates the ongoing tracking capabilities of law enforcement agencies regarding digital asset crimes—even after many years, hackers still find it difficult to escape the law.