Genealogy service and social network MyHeritage suffered a large data breach in October of 2017, and was just informed of it by a security researcher.
In a blog post on June 4th, MyHeritage confirmed that a file stored on an external private server containing 92 million emails (precisely 92,283,889) and hashed passwords from MyHeritage users that had originated from its servers. The file contained MyHeritage user data from up to October 26th of 2017. According to the blog post, this data only includes the email addressed and hashed passwords, and not the actual passwords themselves.
The company claims that there is no evidence that the data was used in any way or that the listed user accounts were compromised because of this leak.