AllRecipes.com is a website for sharing recipes and learning about food. Yesterday, the company emailed out that accounts created before June 2013 may have been intercepted during registration. This would lead to email addresses and passwords being exposed to third parties. It is recommended to change your password if you have not done so since 2013.
The breach was discovered during a security review. It is believed that all of the content is safe and has not been tampered with. The company describes it taking these steps “out of an abundance of caution” in treating all that signed in before June 2013 as affected by a breach.
Without the technical details, it almost sounds like June 2013 is when they implemented HTTPS. A malicious attacker could be interested in email addresses for spam and credentials are unfortunately, frequently used for multiple sites so they could lead to compromising more data from more valuable targets.
AllRecipes has setup an FAQ page for information about the breach at https://wecare.allrecipes.com/. If you have any doubts, change your password by signing in and updating your Settings under your profile.