JBS S.A., the world’s largest meat processing company, admitted to paying $11 million to hackers who broke into its computer system last month. The Brazilian company said it made the payment on May 31 after its systems were compromised by a ransomware attack, which also crippled parts its operations.

The company made the announcement Thursday. JBA said it was forced to make the payment to avoid any unforeseen issues and to ensure the security of its data.

“This was a very difficult decision to make for our company and for me personally. However, we felt this decision had to be made to prevent any potential risk for our customers,” JBS USA’s chief executive officer, Andre Nogueira, said.

The culprits for the cyberattack on JBS’s systems were traced to the Russian-speaking hacking group called REvil. The Federal Bureau of Investigation said the group has made some of the largest ransomware demands on record over the past months.

The hackers reportedly targeted JBS’s facilities in North American and Australia. The company said some of its production was disrupted for several days because of the hack.

The attack on JBS comes just weeks after another hacking group crippled the operations of Colonial Pipeline – the U.S.’s largest fuel pipeline service provider. Colonial Pipeline paid the hackers $4.4 million worth of Bitcoin in early May.

Earlier this week, the Justice Department announced that it was able to track down the cryptocurrency wallet owned by the hackers and recovered most of the ransom payment.