Target works on security-heavy credit cards, after breach

Target is still reeling from the massive security breach, which affected as many as 110 million customers. Now, as the retailer gets back on its feet, it's becoming more security focused.

Target Chief Financial Officer John Mulligan wrote an opinion piece for The Hill on Monday saying that the company was speeding up its implementation of high-security credit cards.

The credit cards come embedded with a tiny microprocessor chip, which is said to beef up security and make it more difficult for cybercriminals to access user data. Target had already begun work on the cards before the hack, but it is now accelerating this $100 million program. Mulligan said that the technology should be ready for customers on Target's REDcards by early 2015, which is six months before the scheduled release.