Credit card breach that hit Jimmy John’s is larger than originally thought

Signature Systems says the breach of its point-of-sales system that hit 216 Jimmy John’s sandwich shops is actually 50 percent larger than originally thought.

The company said Friday that an additional 108 restaurants that use its payment terminals were also hit. The additional locations are independent restaurants not part of the Jimmy John’s chain.

The breach is thought to have begun on June 16 when someone began gaining access to the terminals through a user name and password that are normally used to remotely manage the devices. Companies like Signature Systems use remote management so they don’t have to send a technician to each store, saving time and money but also opening the devices up to just the sort of attack that happened.

To read this article in full or to leave a comment, please click here