LeakedIn

In June of 2012, 6.5 million LinkedIn passwords (unsalted SHA-1 hashes) were leaked online. Many had been cracked. Some of us were victims, and we made this simple tool to help other people see if they were, too, and also to stress that your LinkedIn password should never be used again.

Because there is no longer a need for this tool, we have taken it down. The original explanation and instructions are below.

We have some bad news. 6.5 million LinkedIn passwords (unsalted SHA-1 hashes) were leaked, and many of those have already been cracked. (See Chris’s post for more info.) Some of us were victims, and we want to help you find out if you were a victim, too.

1. To be safe, you should consider your LinkedIn password unusable. In other words, change it on LinkedIn and on every site where you use the same password. Never use it again.
2. If you want to find out if your password was one of the 6.5 million leaked passwords, enter it below. This should not be your current LinkedIn password. You already changed it, right?
3. No one can be certain that only 6.5 million passwords were leaked, so even if yours isn’t found, we still recommend changing it.