SHEPPARD, MULLIN, RICHTER & HAMPTON LLP
bd_0e710dc5bcc67a13 · schema v1 · pii pii-v2
Full breach record for SHEPPARD, MULLIN, RICHTER & HAMPTON LLP →Sheppard, Mullin, Richter & Hampton LLP disclosed a security incident on August 31, 2026, where a single attorney fell victim to a social engineering attack, resulting in the unauthorized disclosure of client documents to an unknown third party. The firm detected the incident on September 1, 2026, engaged forensic experts, and notified law enforcement. No unauthorized access to firm systems occurred. The firm is offering 24 months of credit monitoring and identity protection services to affected individuals.
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Incident timeline
Aug 31, 2026
Begins
Sep 1, 2026
Discovered
Oct 1, 2026
Filed
Linked disclosures
Why this link?Ransomware claims (1)
- Leak Sitesilentransomgroupbd_027752b5e2afb7b72026-10-05 · +4dCandidate
Regulatory filings (4) · sorted by filing gap
- California State AGbd_58f6e1fb5ca692b92026-10-02 · +1dVerified
- Vermont State AGbd_9303f6ab9c972b7b2026-10-02 · +1dVerified
- Oregon State AGbd_a248f335fd6b5a262026-10-02 · +1dVerified
- Texas State AGbd_fedf363487ea17aa2026-10-06 · +5dVerified
Filing propagation · 5 filings · 5 states
View merged incident ↗Pattern: first filing Oct 1 (MA), last Oct 6 (TX) — a 5-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?
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.