The hack also revealed that the company had kept information on 15 million accounts that users had deleted, as well as information on users for assets it no longer owned, such as Penthouse.By comparison, the Ashley Madison hack that took place in July 2015 revealed 32 million accounts, although that attack was also accompanied by a more aggressive extortion campaign.But the leaked data could encompass many more sites, as Friend Finder Networks runs as many as 40,000 websites, a Leaked Source representative says over instant messaging.One large sample of data provided by Leaked Source at first seemed to not contain current registered users of Adult Friend Finder.Leaked Source says it has cracked most of the SHA-1 hashes.It appears that Friend Finder Networks changed some of the plaintext passwords to all lower-case letters before hashing, which meant that Leaked Source was able to crack them faster.Troy Hunt, an Australian data breach expert who runs the Have I Been Pwned data breach notification site, says that at first glance some of the data appears legitimate, but it's still early to make a call. "I'd need to see a complete data set to make an emphatic call on it." If the data is accurate, it would mark one of the largest data breaches of the year behind Yahoo, which in October blamed state-sponsored hackers for compromising at least 500 million accounts in late 2014 (see Massive Yahoo Data Breach Shatters Records).It also would be the second one to affect Friend Finder Networks in as many years.
Friend Finder Networks, stung last year when its Adult Friend Finder website was breached, could not be immediately reached for reaction (see Dating Website Breach Spills Secrets).
Those types of vulnerabilities allow an attacker to supply input to a web application, which in the worst scenario can allow code to run on the web server, according to a OWASP, The Open Web Application Security Project.
The person who found that flaw has gone by the nicknames 1x0123 and Revolver on Twitter, which has suspended the accounts.
Breach notification site first reported the attack, indicating that over 300 million Adult Friend Finder accounts were affected, as well as over 60 million accounts from
Other company holdings, such as Penthouse, Stripshow, and i Cams were also breached, for a total of 412,214,295 affected users.