Challenge Manufacturing Data Breach Exposes Sensitive Information of 1,661 Texas Residents On May 17, 2026, the ransomware group Chaos announced on the dark web via the Tor network that it had stolen 270 gigabytes of data from Challenge Manufacturing (formerly Challenge Mfg. Company LLC). The group threatened to publish the stolen data within three days. The breach exposed names, Social Security numbers, and medical information of affected individuals. While the exact timeline of the attack remains unclear including when the intrusion began or when Challenge Manufacturing detected it the company reported the incident to the Texas Attorney General on June 26, 2026. So far, 1,661 Texas residents have been confirmed as impacted, though the total number of affected individuals across the U.S. has not been disclosed. In response, Challenge Manufacturing is notifying affected individuals via U.S. Mail, providing details about the breach and potential protective measures. The company has not publicly shared further specifics on the duration of the attackers' access or additional response efforts.