1. Hackers did an attack on sys blockchain by controling 51% of the mining
2. They mined lots of sys and deposited into binance
3. They then used hacked API of other users who use bots to buy sys thus fulfilling thieir own sell order of mined sys
4. They then transfered 7000 BTc from those sell orders out of binance
5. Binance decided to halt all trading
6. Biance disabled and removed ALL API keys

If you're using a trading bot, you need to create new API keys. Nothing else to worry about. 7000 BTC (46 million USD) is pocket change for Binnce.