The thoughts came from this post made by @o_e_l_e_o. So credit goes to him as well.

At the title says, have you been monitoring your forum activities ever? Are you wondering why should you monitor your own activity since still you have access to your account? But I think it's necessary to monitor your activity at least once a day. The reason I will describe below.

Just imagine someone hacked your account somehow and he has full access and the hacker didn't change your password. Then he could send unsolicited PMs to other users, could post plagiarized content from your account, and could scam someone as well. So eventually you would a victim as well and your account would be tagged or ban.

You may think how would you check your actives to make sure if someone accessed your account. First of all, you may check your post history and incoming + outgoing PMs. Hacker would delete PMs, so there would be some difficultly. In that case, your IP log would help if you aren't using the Tor browser. Here is the link: https://bitcointalk.org/myips.php, here you may see past one month IP logs. Again, it won't work if you are using Tor due to a random IP address. But at least you may notice the time when you access your account.

Anyway, it just came into mind due to some recent scam attempt. Scammers always coming with the new techniques, so we need to prevent them as much as possible.