Troy Hunt, the man behind HaveIBeenPWNed, just uncovered an extensive list of services hit by data breaches. https://www.troyhunt.com/ive-just-added-2844-new-data-breaches-with-80m-records-to-have-i-been-pwned/ There is a list of files which have a name corresponding to services (mostly) in the post. MalwareBytes.org is mentioned. Can MalwareBytes confirm this? Anyways, change your passwords just to be safe.