If you bought an Acer device from the company's store in the last year, there's a chance that your credit card info was hijacked. The Taiwan-based company informed California's attorney general that attackers made off with the "name, address, card number, expiration date and three-digit security codes" of users between May 12, 2015 and April 28, 2016. It sent form letters to the 34,500 affected customers, all of whom are in the US, Canada and Puerto Rico.
The theft isn't particularly large and no social security numbers were taken. However, it's one of the few we've seen involving a major PC company's online store. Acer hasn't yet revealed how it happened, but such breaches are usually a result of employees opening infected email, not any fancy hacking. While the breach was still ongoing, Acer recently held an event to reveal its latest laptops and desktop computers. If you bought something from its stores soon after, you may want to ensure that your credentials weren't stolen.