Security Breach at MyHeritage

MyHeritage is alerting people in this blog post, to a security breach that occurred on their servers. They've tracked the date of the breach to October 26, 2017. If you opened an account since that date, there should not be a problem. If you opened an account on MyHeritage prior to this date, your email address and a hash of your password was found posted on a site not controlled by the company.

What does this mean? It means that someone got into MyHeritage's systems. How far they got is not clear. What they know is that the perpetrator got a hold of email addresses and hashes of passwords. A hash is a one-way encryption that is used to verify someone's credentials when they log onto a system. It is, theoretically, not possible to reverse this hash so the hacker would not have access to your plain text password.