Check your account activity , browser activity and login record in kucoin. “Last login time,Device and IP, mobile app”. Do you see an unknown ip address, or a different device u usually login from?
I also read a month ago about a coordinated Twitter Hack that target Coinbase, Kucoin, Binance, Gemini, and more. The message was “We have partnered with CryptoForHealth and are giving back 5,000 BTC to the community”