Disqus is a commenting platform that enables websites to build a database of users and track engagement. The company says its software is used by millions of publishers, generating some 17 billion page views a month. Disqus issued an Oct. 6 breach notification, warning that data on 17.5 million users was stolen in 2012. The breach exposed email addresses, salted password hashes, usernames, sign-up dates and last login dates. The passwords were hashed using the SHA1 algorithm, which security experts have long warned is not secure.”]
Source: https://www.govinfosecurity.com/following-disqus-breach-expert-discloses-more-old-breaches-a-10366