As you may or may not recall, given how much time has passed, hackers broke into LinkedIn s network back in 2012, stole some 6.5 million encrypted passwords, and posted them onto a Russian hacker forum.
Because the passwords were stored as unsalted SHA-1 hashes, hundreds of thousands were quickly cracked.
If you re not sure, a best practice would be to change it anyway, as well as on other critical sites where you may be using that same password such as your banking website, email, or Facebook, for example.
LinkedIn says that it has increased its security measures in the years since the breach, by introducing stronger encryption, email challenges and two-factor authentication.
They would also not necessarily protect users from hackers who had obtained email and password combinations.
We are taking immediate steps to invalidate the passwords of the accounts impacted, and we will contact those members to reset their passwords.