Reddit Userdata Hacking?

We had a security incident. Here's what you need to know. : announcements
https://www.reddit.com/r/announcements/comments/93qnm5/we_had_a_security_incident_heres_what_you_need_to/

Excerpt.
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What information was involved?
1.All Reddit data from 2007 and before including account credentials and email addresses
2.Email digests sent by Reddit in June 2018
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What can you do?

First, check whether your data was included in either of the categories called out above by following the instructions there.

If your account credentials were affected and there’s a chance the credentials relate to the password you’re currently using on Reddit, we’ll make you reset your Reddit account password. Whether or not Reddit prompts you to change your password, think about whether you still use the password you used on Reddit 11 years ago on any other sites today.

If your email address was affected, think about whether there’s anything on your Reddit account that you wouldn’t want associated back to that address. You can find instructions on how to remove information from your account on this help page.

And, as in all things, a strong unique password and enabling 2FA (which we only provide via an authenticator app, not SMS) is recommended for all users, and be alert for potential phishing or scams.
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If you use the same password, it is very dangerous.
If you have one, you should change your password.

I do not have Reddit's account.