There's a history of huge hacks wherever you look. You can check your e-mail address at:

https://haveibeenpwned.com/

In this case, knowledge isn't power. If you've had your e-mail address for a while, then you've been pwn'd many, many times. And there's not thing one you can do about it, other than the usual routine of changing passwords. Keep your credit reports locked. It's a pain in the neck if you ever need to apply for credit, but it's the only way to make the credit bureau system work in your defense.