4. Always secure your email address. You can use 2FA to secure your email address, so that hackers won’t easily have access to your email address. Also, avoid entering your email address on untrustworthy websites, It's always better to have a separate email address for the forum that you won't use on any other websites, so that nobody will be able to hack your email address. If your email address have been compromised it will be easy to hack your forum account, because the user can easily input your bitcointalk username on the forum and click on reset password, a code will be send to your mail which the user can easily use to access your forum account.
Just want to add up that if people cannot keep track anymore on how many websites they registered their email, they can use the website "Have I Been Pwned" to tell if their email address were involved in a certain data breaches.
I had an old email address (not used in this forum of course) that became victim of data breach and now I realized why my Facebook back in 2009 was always being password changed.
I am pretty sure that many of us here are already aware and careful of how we use our email address to different websites, so I would just put this out to people that aren't aware yet.