CORNERSTONE BUILDING BRANDS, INC.
bd_3e6bb6a0d421c8b1 · schema v1 · pii pii-v1
Full breach record for CORNERSTONE BUILDING BRANDS, INC. →3 incidents on fileCornerstone Building Brands experienced an external system breach (hacking) on December 24, 2020, which was discovered on May 21, 2021. The breach affected one Maine resident, whose name and Social Security Number were compromised. The company offered one year of credit monitoring and identity theft protection services through Kroll.
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Incident timeline
Dec 24, 2020
Begins
May 21, 2021
Filed
Linked disclosures
Why this link?Regulatory filings (2) · sorted by filing gap
- Montana State AGbd_4421f5071590feb42021-05-21Candidate
- Indiana State AGbd_c75a17f9404c2c142021-05-21Verified
Filing propagation · 3 filings · 3 states
View merged incident ↗Evidence ladder
Attacker assertion only. Establishes: claim date, group, alleged victim.
Unlocks: incident narrative, operational impact. Still no compliance clock.
Unlocks: discovery date, data types, affected count, compliance clock.
Unlocks: materiality, stated response, full audit trail. Ceiling removed.