: Links claiming to be "downloads" for these lists are often traps designed to infect the downloader’s computer with malware or steal their own credentials.

: A notification or sharing of old "combolists" from the massive Yahoo breaches (such as the 2013 or 2014 incidents which impacted billions of accounts).

If you are concerned that your information might be part of such a list, you should take these steps immediately:

: If you still use the same password you had years ago, change it immediately. Ensure it is unique and not reused across other sites.