2026 Kloeckner Metals — network intrusion (Feb; SSNs; notices Apr)
Data compromised
Names, Social Security numbers (per disclosures)
Technical writeup
Kloeckner Metals Corporation disclosed unauthorized activity on its network with access windows described in secondary reporting as approximately February 17–23, 2026, discovery on March 13, 2026, and consumer/regulatory notifications around April 10, 2026. Public summaries cited exposure of names and Social Security numbers for affected individuals; some early state-level mirrors referenced very small resident counts (e.g., Maine) while nationwide totals were not uniformly published. The company was described as offering credit monitoring and identity protection in notification materials.
Root cause
Unauthorized network access (detailed vector not public in early summaries)