LinkedIn confirms data theft — time to change your password

LinkedIn this afternoon acknowledged that some of its user passwords have been stolen, after reports earlier today that more than 6.4 million encrypted LinkedIn user passwords were uploaded to a Russian forum.

The popular business-oriented social network didn’t confirm the number, but Vincente Silveira, a LinkedIn director, said in a blog post that the company “can confirm that some of the passwords that were compromised correspond to LinkedIn accounts.”

Here are the steps that LinkedIn says it is taking.

  1. Members that have accounts associated with the compromised passwords will notice that their LinkedIn account password is no longer valid.
  2. These members will also receive an email from LinkedIn with instructions on how to reset their passwords. There will not be any links in these emails. For security reasons, you should never change your password on any website by following a link in an email.
  3. These affected members will receive a second email from our Customer Support team providing a bit more context on this situation and why they are being asked to change their passwords.

The company says it’s still investigating the situation, noting that it recently put new security measures, including hashing and salting, which jumble the stored passwords and insert random characters to make the actual passwords tougher to figure out.

  • adellos

    If you want to know if your password has been compromised. 

    1. Follow the instructions here: http://erratasec.blogspot.com/2012/06/confirmed-linkedin-6mil-password-dump.html2. You can use that page to generate the hash for your password. Then you’ll have to get the ~250MB text file and search for the hash you generated in step 1. Pay attention to the section about leading zeroes in the blog post.I was lucky and the has for my password was not in the file. Other people had me check for them and weren’t so lucky. 

  • Guest

    LinkedIn’s security is appalling. First, they ask me for my non-LinkedIn passwords (Gmail, etc.) with only a hollow promise that they won’t archive them. Next, they upload my private meeting data — in the clear! — when I use the calendar feature in their iPhone app. Now they lose my LinkedIn password.

    Any more misbehaviour from LinkedIn and I may close my account.