According to CoinMeta, as reported by OnchainLens, India's oldest cryptocurrency exchange, Unocoin, encountered unauthorized server access on November 9th, resulting in 81,000 wallets showing a balance of zero and temporarily disabling user logins. Meanwhile, Arkham indicated that none of the 81,000 addresses it tracks held any assets, and the website also displayed a 504 error. The exchange is investigating the chain activities to determine the specific method of the attack.