The cloud giant discovered malicious software on systems running its network of MICROS payment terminals, the company confirmed in an email to Fortune. In addition to affecting hundreds of the company’s computers, the breach affects an online support portal that allows Oracle to remotely address customers’ issues concerning their cash register-connected terminals, Brian Krebs, an independent cybersecurity journalist, first reported on his site Krebs on Security on Monday, citing people briefed on the matter. The malware planted on Oracle’s systems enabled attackers to steal customers’ login credentials, Krebs noted. In response, Oracle said it is forcing users of the service to change their account passwords, adding that the breach does not affect its other corporate networks, cloud services, and systems. Read more at Fortune.