Ravelry.com

Hackers accessed one of Ravelry's second servers and obtained names, encrypted passwords, and possibly email addresses. Business transactions occur on the site, but no financial information was exposed during the breach.  Since hackers may be able to decrypt the passwords and link them to names and email addresses, Ravelry suggested that users immediately change their Ravelry passwords.  Users should also make different passwords for other accounts if their Ravelry password is the same as the one used for those accounts.