Although the security breach that has just been discovered by Binance impacted the BTC hot wallet only — which contained only about 2 percent of the total BTC holdings of the exchange — the hackers managed to withdraw 7,000 BTC in a single transaction. Fortunately, Binance will cover this incident in full and no user funds will be affected.
https://www.notebookcheck.net/Grand-Theft-Crypto-Hackers-steal-the-equivalent-of-over-US-40-million-from-Binance.420291.0.html