Southern Illinois University
ent_b988bcc68e5a48ab7d448cc1
Disclosures
12
State AG · Leak Site · 10 jurisdictions
Multi-filing incidents
2
incidents joining 2+ filings here
Max affected reported
38,286
nationwide · State AG ME
Leak-site claims
1
unverified actor claims
Identity resolution
- Canonical name
- Southern Illinois University
- Normalized
- southern illinois university— dedupe via name-norm; Microsoft / MSFT collapse to one row
- GLEIF LEI
- No match
- SEC EDGAR CIK
- None — not an SEC registrant
- Domain
- None on record
Disclosure history (12)newest first
- Texas State AGas victim2026-08-21
Southern Illinois University based in Carbondale, Illinois, a educational institution entity reported a data breach to the Texas Attorney General. The breach was discovered on 2026-07-24 and reported on 2026-08-21. 1,597 Texas residents were affected. 44,118 individuals affected in total. Types of information involved: Name of individual;Address;Social Security Number Information. Consumers were notified via U.S. Mail.
- California State AGas victim2026-08-20
Southern Illinois University reported a data breach to the California Attorney General. The incident occurred on September 29, 2025. The notice indicates that personal information was compromised, potentially including names and Social Security numbers, given the offer of credit monitoring and advice on security freezes. The university established a toll-free response line and offered credit monitoring services to affected individuals. The specific attack vector and number of affected individuals were not disclosed in the provided text.
- Vermont State AGas victim2026-08-20
Southern Illinois University reported a data breach to the Vermont Attorney General. The breach was reported to the AGO on 2026-08-20. The reporting organization type is Educational. 23 Vermont residents were affected. Categories of data breached: Social Security Numbers.
- Massachusetts State AGas victim2026-08-01
Southern Illinois University notified residents of multiple states, including Massachusetts, of a data breach involving personal information. The university established a toll-free response line and offered credit monitoring services. Specific details regarding the nature of the breach, dates of occurrence, and number of affected individuals were not provided in the available excerpts.
- New Hampshire State AGas victim2023-10-30
Southern Illinois University notified the NH AG of a third-party data breach involving a zero-day vulnerability in the MOVEit Transfer solution. Unauthorized access occurred May 29-30, 2023, discovered Sept 25, 2023. 22 NH residents affected; data included names and SSNs. Notifications sent Oct 24, 2023.
- Vermont State AGas victim2023-10-25
Southern Illinois University notified consumers of a data breach involving its third-party vendor, MOVEit Transfer. A zero-day vulnerability in MOVEit was exploited, leading to the removal of files containing names from SIU's network on May 29-30, 2023. SIU engaged third-party professionals to investigate and remediate the vulnerability. The university is offering complimentary credit monitoring services to affected individuals.
- Maine State AGas victim2023-10-25
Southern Illinois University reported a data breach affecting 10 Maine residents. The breach, which occurred between May 29, 2023, and May 30, 2023, was discovered on September 25, 2023. The incident was categorized as an external system breach (hacking) and resulted in the compromise of names and Social Security numbers. Affected individuals were notified on October 24, 2023, and offered 12 months of complimentary credit monitoring services through Experian.
- Massachusetts State AGas victim2023-10-25
Southern Illinois University reported a data breach to the Massachusetts Office of Consumer Affairs and Business Regulation. The breach was reported on 2023-10-25. 5,163 Massachusetts residents were affected. The report records the breach type as electronic.
- Montana State AGas victim2023-10-25
Southern Illinois University notified affected individuals of a third-party data incident involving the MOVEit Transfer solution. A zero-day vulnerability was exploited by unauthorized actors to access data stored on the MOVEit server between May 29-30, 2023. SIU discovered the incident on September 25, 2023. Personal information, including names, was potentially removed. SIU engaged third-party professionals for investigation and remediation, and offered complimentary credit monitoring services.
- Indiana State AGas victim2023-10-24
Southern Illinois University reported a data breach to the Indiana Attorney General. The breach occurred on 2023-05-30 and was reported on 2023-10-24. 486 Indiana residents were affected. 38,286 individuals affected in total.
- GLOBALLeak Siteas victim2023-07-26
Southern Illinois University
- Illinois State AGas victim2023-01-01
SOUTHERN ILLINOIS UNIVERSITY filed a data-breach notice with the Illinois Attorney General during 2023 (case 23-740). The register records the breach as discovered on May 29, 2023. Illinois does not publish the number of people affected — 815 ILCS 530/10 permits the Attorney General to publish only the entity name, the types of personal information and the date range.