Did you read the official statement of binance? of course they were hack and they wont admin it because of their reputation only those people who doesnt know what they are talking would bite the bait.API is too vulnerable and that is only the excuse,not only those people who are using bots but also those who doesnt,phishing attacks is considered as a hack.Read their official statement they called these attackers a hacker ? because it was a hack attempt.

Their reputation would be at risk if they have told the truth luckily binance had fast moves to disable those widrawals.