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Confirmed

Sheppard Mullin: documents disclosed after attorney was socially engineered

On August 31, 2026, one attorney fell victim to sophisticated social engineering, resulting in certain documents being disclosed to an unknown third party.

Last updated: 2026-11-09

Overview

No compromise of firm systems. Learned September 1. No total is given.

Timeline

  1. Occurred
  2. Discovered
  3. Disclosed

Organization response

Per the notice, the organisation investigated and contained the incident, notified individuals and offered monitoring or protective resources.

What you can do

Verify notices through official channels, avoid links in unexpected messages, do not provide credentials, and review credit reports and statements.

Sources

  1. Sample consumer notice filed with California AG (Sheppard, Mullin, Richter & Hampton LLP)California Department of Justice, Office of the Attorney General · 2026-11-09
  2. California AG data breach report: Sheppard, Mullin, Richter & Hampton LLPCalifornia Department of Justice, Office of the Attorney General · 2026-11-09

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