The attack is connected to Russia's Carbanak Gang, who stole $1 billion last year, but it is currently unknown whether or not customer data was actually stolen.
SAN FRANCISCO -- One of the largest point-of-sale payment systems in the hospitality industry, used in restaurants and hotels globally, has been breached by a Russian organized crime group,computer security writer Brian Krebs reported Monday.
The breach occurred in systems run by MICROS Systems, which was purchased by Oracle in 2014.
Oracle security engineers found malware in some systems run by MICROS and identified the affected systems and blocked malicious processes and unauthorized network connections, the company said in an undated letter and FAQ sent to customers, which it provided to USA TODAY on Monday.