You can check to see if your email has been in any data breaches in the last couple of years.
https://haveibeenpwned.com/
Most excellent website, you can sign up and it'll automatically email you if your email (or even domain if you have one) is ever in any future data breach.
It's run by Troy Hunt a security professional and Microsoft MVP for several years... so you don't need to worry about it being a dodge site too
Read a few of Troy's blog posts to see how easy it really is for someone (any one) to get hold of your details if you're ever unlucky enough to be signed up to a hacked site.
interesting - 1 result for me - nexus mods although i didn't even know i signed up for it, must have been a long time ago.