BreachCensus

Southern Illinois University

United States of America

Southern Illinois University is an organisation in Texas. It appears on the Massachusetts Attorney General breach-notification register, the California Attorney General breach-notification register, the Texas Attorney General breach-notification register and the Vermont Attorney General breach-notification register with 2 confirmed incidents (3 filings); the most recent notice was filed on August 21, 2026.

Data as of September 1, 2026.

Confirmed incident

Filed in TX, CA, MA and VT

The same incident was filed separately with 4 jurisdictions within a few days of each other (TX, CA, MA and VT) — shown here as one incident.

Occurred
September 29, 2025
Disclosed
August 21, 2026
Records affected
44,118

Timeline

  1. August 20, 2026
    Reported to regulator Regulator

    CA AG breach notification: an unknown number of California residents affected

    source
  2. August 20, 2026
    Reported to regulator Regulator

    VT AG breach notification: 23 Vermont residents affected

    source
  3. August 21, 2026
    Reported to regulator Regulator

    TX AG breach notification: 1,597 Texas residents affected

    source
  4. August 21, 2026
    Reported to regulator Regulator

    MA AG breach notification: 134 Massachusetts residents affected

    source
What a Texas notice means

Required under Tex. Bus. & Com. Code §521.053. Notice to the Attorney General is required when a breach affects at least 250 Texas residents.

Note: the published count is a total, not limited to Texas residents.

Texas breach-notification register ↗

What a California notice means

Required under Cal. Civ. Code §1798.82. A copy of the notification must be sent to the Attorney General when a single breach requires notifying more than 500 California residents.

Note: no affected-count is published on this register.

California breach-notification register ↗

What a Massachusetts notice means

Required under M.G.L. c. 93H. Notice to the Attorney General is required for a breach affecting any number of Massachusetts residents' personal information -- the statute sets no minimum count.

Note: the count is Massachusetts residents only, not a total.

Massachusetts breach-notification register ↗

What a Vermont notice means

Required under 9 V.S.A. §2435. Notification to the Attorney General is required.

Note: the count is Vermont residents.

Vermont breach-notification register ↗

Confirmed incident

US-MA

Disclosed
October 25, 2023

Timeline

  1. October 25, 2023
    Reported to regulator Regulator

    MA AG breach notification: 5,163 Massachusetts residents affected

    source