Following a cyberattack on Nobitex that resulted in over $90 million in losses, the Central Bank of Iran has mandated that all domestic crypto exchanges limit their trading hours from 10 AM to 8 PM. The attack, attributed to the hacker group Predatory Sparrow, involved moving Bitcoin to a new cold wallet for security. Nobitex's breach highlights ongoing geopolitical tensions and the vulnerabilities of crypto exchanges in Iran.