I have noticed several accusations that they have not asked me for any loan but they have not changed their password. Unfortunately, I have accepted one of them. I am worried about the access of those accounts without changing the password. How is the hacker processing like this?

Case 1: https://bitcointalk.org/index.php?topic=5459055
Case 2: https://bitcointalk.org/index.php?topic=5478004.msg63344637#msg63344637
Case 3: https://bitcointalk.org/index.php?topic=5030169.msg63440375#msg63440375
I think there might be many more though I can't remember and do not know how many people are facing problems like this. And how long we may keep safe ourselves.