Confirmed

US Tiger Securities: back-office files encrypted and copied

On July 10, 2025, the firm found files encrypted in the virtual back-office environment shared with TradeUP; some files had been copied by an unauthorised party on July 8–9, 2025.

Last updated: 2026-11-09

Overview

The segmented TradeUP production environment and trading operations were not affected, per the notice. Fields are templated; no total is given. The first-disclosure date is the earliest public document confirmed (California AG posting); no 2025 public disclosure was found in other state AG lists, HHS or company notices checked.

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. California AG data breach report: US Tiger Securities Inc. (“US Tiger”)California Department of Justice, Office of the Attorney General · 2026-11-09
  2. Sample consumer notice filed with California AG (US Tiger Securities Inc. (“US Tiger”))California Department of Justice, Office of the Attorney General · 2026-11-09

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