Zaif, a Japan-based cryptocurrency exchange operated by Tech Bureau, reported that attackers stole about 6.7 billion yen, or roughly $60 million, in cryptocurrency from hot wallets. The excerpt says the exchange detected unusual withdrawal and deposit activity on September 14 and later found that 5,966 bitcoins, along with unspecified amounts of Bitcoin Cash and MonaCoin, had been taken. Zaif shut down its platform, reported the breach to Japan's Financial Services Agency and local authorities, and sought financial support from Fisco Digital Asset Group because its reserves were insufficient to reimburse customers. The incident matters defensively as a hot-wallet theft case affecting an exchange already warned by regulators to strengthen platform security, but the excerpt does not identify the attacker or provide reusable technical IOCs.