Forum issues

Recently, cases of spam attacks on forums have become more frequent, as a result, messages are created from users registered on the forum, there may be fresh accounts, or maybe from 2010, in general, the date the account was created is not important, hackers use your accounts for spam.
In order not to be on this list, you need to make more complex passwords and of course not write this password on the refrigerator.
Since the attacker sends spam on your behalf, the administration has no choice but to block the account, as a result we lose our account on the forum, and if the password for all forums is the same, then it is possible that the loss will be on all forums of your account (nikname).