SAN FRANCISCO (AP) — A major payment processer suspects the fallout from a recent security breach may be worse than it initially believed.

Global Payments Inc. raised the red flag Tuesday, more than two months after it first reported that computer hackers may have heisted data from as many as 1.5 million credit and debit card accounts in North America. At that point, the company had concluded that the crooks hadn’t taken anybody’s name, address or Social Security numbers — essential elements for obtaining a credit card under a stolen identify.