The company had earlier disclosed that fairlife was hit by a ransomware attack.

Providing details about the incident, the company said in a statement: "This event involved access by an unauthorized third party to a portion of the company’s systems and taking of certain data, and a temporary suspension of production operations."

Fairlife said it is continuing to work diligently to restore the remaining impacted systems and operations.

"Retail availability of fairlife products has been largely unimpacted, due to the availability of existing inventory. Product quality and safety have not been impacted," the company said.

The company also noted that, based on the information currently available, it believes the incident has not had, and is not reasonably likely to have, a material impact on its financial condition or results of operations.

Meanwhile, the ransomware group Anubis has claimed responsibility for the cyberattack on fairlife.

According to cybersecurity researchers at Arctic Wolf, cited by Cybersecurity Dive, the threat group claims it encrypted Fairlife's servers and exfiltrated approximately 1TB of data during the attack.

Anubis has reportedly threatened to publish the stolen data if its ransom demands are not met within a week. Researchers also shared screenshots from the group's data leak site, according to the report.

Arctic Wolf describes Anubis as a Ransomware-as-a-Service (RaaS) operation that relies on affiliates for attacks and supports data theft, file encryption, and optional destructive data-wiping capabilities. The group emerged in late 2024 as a rebranding of the Sphinx ransomware operation, marked by a change in the encrypted file extension from .sphinx to .anubis.

Commenting on the group's tactics, Stefan Hostetler, Staff Threat Intelligence Researcher at Arctic Wolf, told Cybersecurity Dive: "Anubis affiliates have repeatedly secured initial access by exploiting internet-facing vulnerabilities and abusing stolen VPN credentials. In our investigations, we've seen attackers take advantage of vulnerabilities that were not new or especially sophisticated, underscoring a persistent reality that threat actors often succeed by exploiting known weaknesses that organizations haven't fully remediated."