Ancestry.com has confirmed that RootsWeb, its free website for individuals to search genealogy, recently had a security vulnerability on its server that exposed a file containing the usernames, email addresses and passwords of 300,000 users. The compromise occurred in 2015.
According to Ancestry.com, most of the accounts that were compromised were from free trial or currently unused accounts. No financial information or Social Security information is included in the exposed file. It is informing the users whose information has been compromised.
Nonetheless, users of Ancestry.com may wish to change their passwords.