HackingTechnologyInformationCustomer Data InvolvedIdentity (basic)Government IDHighContained

OSI SYSTEMS, INC.

bd_1be6cf685a8a1864 · schema v1 · pii pii-v1

Severity

High

Discovered

Dec 25, 2025

Filed

Mar 11, 2026

To disclose

11 weeks

Affected · nationwide

4,9107 in this filing

Linked

10 filings

Confidence

65%

Full breach record for OSI SYSTEMS, INC. →

OSI Systems, Inc. reported an external system breach (hacking) occurring on December 23, 2025, discovered on December 25, 2025. The incident potentially exposed names and Social Security numbers of 4,910 individuals, including 7 Maine residents. OSI engaged forensic specialists, notified law enforcement, and provided 12 months of credit monitoring to affected individuals. Notices were sent on March 11, 2026.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Dec 25, 2025 → Filed with AG Mar 11, 202676d ⏱ ME AG >30d11 weeks discovery → filing

⚠ AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.

Incident timeline

undetected · 2 days

discovery → filing · 11 weeks / 76 days

Dec 23, 2025

Begins

Dec 25, 2025

Discovered

Mar 11, 2026

Filed

vs. sector median

8 wks faster

This filing is one of 10 about the same incident.View merged incident

A leak claim by inc_ransom about this victim predates this filing by 71 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteinc_ransombd_0fe82859b7e740312025-12-30 · +71dVerified

Regulatory filings (8) · sorted by filing gap

Nebraska State AGbd_03b6bd32acad77302026-03-11Verified
New Hampshire State AGbd_0a97f13a9774839c2026-03-11Verified by operator
Washington State AGbd_5de9a0ae9cba56792026-03-11Verified by operator
Indiana State AGbd_70c902ae9bbbfa9f2026-03-11Verified

Show 4 more filings ↓up to 1d gap

Massachusetts State AGbd_7bfa9894135dbf542026-03-11Verified by operator
California State AGbd_f9015384334e14fd2026-03-11Verified
Texas State AGbd_a5c9fc36c25a18cd2026-03-12 · +1dVerified
Vermont State AGbd_c9de4de82a0958042026-03-10 · +1dVerified by operator

Name: OSI SYSTEMS, INC.
norm: osi systems
Domain: osi-systems.com
Industry: Other Commercial

Name: OSI SYSTEMS, INC.
norm: osi systems
Domain: osi-systems.com
Industry: Other Commercial
Industry: Technologyllm

Discovered: Dec 25, 2025
Breach occurred: Dec 23, 2025
Undetected for: 2 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 11, 2026
Affected individuals: 4,910state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1119 Automated Collection
Threat actor: External
Regulator citations: Providing written notice of this event to appropriate state regulators and the three major credit reporting agencies, Equifax, Experian, and TransUnion
Initial access: exploit_public_facing

During the incident: Initiated an investigation into the nature and scope of the activity with the assistance of third-party forensic specialists
Notified federal law enforcement regarding the event
Provided access to credit monitoring services for twelve (12) months, through IDX, to individuals whose personal information was potentially affected by this incident
Providing written notice of this event to appropriate state regulators and the three major credit reporting agencies, Equifax, Experian, and TransUnion
Changes made: Implementing additional security measures to further protect against similar incidents occurring in the future
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 11 weeks(76 days from discovery to filing)
Compliance flags: ME AG >30d · 76dLeak >30d
Discovery-date grounding: AG web formThe discovery date came from the AG web-form field, which is systematically later than the detection date stated in the letter. Treat the clock as indicative.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Dec 25, 2025
→ Filed with AG: Mar 11, 2026
76d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Dec 25, 2025 → Filed with AG: Mar 11, 2026	76d	30 days (soft)	ME AG >30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 9 filings · 9 states

View merged incident ↗

Vermont State AGMar 10 · first

Nebraska State AG+1d

New Hampshire State AG+1d

Washington State AG+1d

Indiana State AG+1d

Massachusetts State AG+1d

California State AG+1d

Maine State AG+1d · this page

Texas State AG+2d

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/94553a0a-8a51-4d4d-97ac-db087c8661d3.html
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 11, 2026
Raw hash: fa8028da4f3b5c74b038d64b6faa03fd3405356ba055585bec831e7521993744

Linked disclosures

Ransomware claims (1)

Regulatory filings (8) · sorted by filing gap

Reporting entityOSI SYSTEMS, INC.

Victim entityOSI SYSTEMS, INC.

Incidentdiscovered Dec 25, 2025

Stated responseInitiated an investigation into the nature and scope of the activity with the assistance of third-party forensic specialists

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov