There is nothing special about the forum, you will have the same level of security as if you secured social media accounts (perhaps less due to the lack of features of two-factor authentication)
But even hackers do not try to steal newbie accounts because it does not provide any additional advantage to them.
So creating account with strogn password, hide your email a,d sign a message will be enough.
Exactly as long as members of this forum avoid clicking on phishing links and logging in from different devices and browsers.
Securing the account with strong password will be enough to protect one forum account, the rate of accounts hack have reduced significantly lately and this is because members of this forum are becoming more aware of the many tricks that hacker employer to steal personal log in details, so member are becoming more pro active in security and how to better protect their social media accounts including this forum.
It's probably the inactive or abandoned accounts that are primarily targeted by hackers. So we wouldn't know whether old accounts that have now waken up after a long period of inactivity are already hacked and probably sold to another person. Unless the posting style is too noticeably different, it might not easily be detected.
Hacking active accounts would only disappoint the hackers as the owner could easily create a new one and alert the entire community about the incident. The original account could be retrieved. Until then, it could be red-tagged.