Just now Google said to change my password immediately...

Hello everyone, I'm new. Logging in here for the second time, Matters. As soon as you log in, Google says that the system you log in to has been hacked, please change your password immediately. Is this normal? Or is it really hacked? Do you have any answers? After all, I just came here, and I am not familiar with the interface, so I was warned... It was very disappointing and worried. .

However, it is still important and exciting to have a platform in both simplified and traditional Chinese. I wish everyone a happy new year and victory against inflammation! Although there are many conspiracy theories flying all over the sky! But there is no wind and no waves. Should someone come out and explain?