Memorial Sloan Kettering Cancer Center Listed by Meow Ransomware Group

On December 12, 2023, Memorial Sloan Kettering Cancer Center was listed on the leak site operated by the meow ransomware group. The posting claims the New York cancer hospital suffered a ransomware attack in which internal files were exfiltrated. The listing does not specify the number of records affected or the exact nature of the files taken, leaving patients, employees, and their families to assess their own exposure.

Reported Details from the Listing

The meow leak site entry states that Memorial Sloan Kettering Cancer Center was hit by a ransomware attack and that attackers successfully exfiltrated internal files. No patient count, employee count, or sample data appears in the posting. The disclosure indicates the data was obtained during a ransomware incident but provides no further technical details about the initial access vector or the volume of material stolen. As of the listing date, the group had not published any downloadable archives, which is consistent with their observed pattern of using the mere threat of release to pressure victims.

Why This Matters for You and Your Family

If you or a member of your family have ever received care at Memorial Sloan Kettering, worked there, or had insurance claims processed through the center, your personal information may now sit in an attacker-controlled archive. Medical facilities hold some of the most sensitive records that exist: diagnoses, treatment histories, Social Security numbers, addresses, and payment details. Even when exact figures are unknown, the internal files exfiltrated almost certainly contain information that can be used for identity theft, insurance fraud, or targeted scams. Families dealing with cancer already carry heavy stress; discovering that private medical details have been stolen adds another layer of violation and long-term risk.

Doxxing and Identity-Chain Implications

Medical data rarely travels alone. A single leaked email or phone number from this incident can be chained with credentials from earlier breaches to unlock social-media accounts, online patient portals, and financial services. Attackers routinely map these connections to build full identity profiles. Children’s gaming accounts linked to the same family email address are especially vulnerable because gamers often reuse passwords and recovery information. Once an attacker controls one account, they can pivot to others, escalating from data theft to full account takeover and public doxxing. The real danger is not the initial leak but the silent months that follow while the information circulates on underground forums.