HackingTechnologyProfessional ServicesInformationVulnerability ExploitSupply Chain (3P Vendor)Data ExfiltratedEmployee Data InvolvedEmploymentIdentity (basic)Financial accountLowContained

Informa

bd_09a5942919b0f5fa · schema v1 · pii pii-v1

Severity

Low

Discovered

Nov 1, 2025

Filed

Apr 17, 2026

To disclose

24 weeks

Affected

Not disclosed

Linked

3 filings

Confidence

65%

Full breach record for Informa →6 incidents on file

Informa disclosed a data breach resulting from a security incident at third-party software supplier Oracle. An unauthorized party accessed and copied records held on an Informa Oracle system between August 11 and August 18, 2025. Informa identified the unauthorized access in November 2025. Affected data includes historical employment-related information, names, and payment-related data for employees, contractors, and job applicants. Informa engaged forensic experts, notified law enforcement, and is offering 24 months of identity monitoring to affected individuals.

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California clockDiscovered Nov 1, 2025 → Notified Apr 17, 2026167d ✗ CA 60-day late24 weeks discovery → filing

Incident timeline

undetected · 82 days

discovery → filing · 24 weeks / 167 days

Aug 11, 2025

Begins

Nov 1, 2025

Discovered

Apr 17, 2026

Filed

vs. sector median

+5 wks slower

This filing is one of 3 about the same incident.View merged incident

Part of ORACLE CORPORATION supply-chain incident (2025) — a supply-chain cascade affecting multiple organizations.View cascade →

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Texas State AGbd_8e66a338c28129622026-04-22 · +5dVerified
Maine State AGbd_950dd223120b88f62026-05-08 · +21dVerified

Name: Informa
norm: informa
Domain: informa.com

Name: Informa
norm: informa
Domain: informa.com
Industry: TechnologyllmProfessional Servicesllm

Discovered: Nov 1, 2025
Breach occurred: Aug 11, 2025 – Aug 18, 2025
Undetected for: 82 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 17, 2026
Affected individuals: Not disclosed
Data types: EmploymentIdentity (basic)Financial account
Attack vector: Third-Party / Supply Chain
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1041 Exfiltration Over C2 Channel
Threat actor: External
Regulator citations: Notified relevant authorities, including law enforcement
Third party: via Oracle
Initial access: supply_chain

During the incident: Engaged third-party forensics experts to secure the system and conduct a full investigation
Undertook a robust review to confirm the data involved
Notified relevant authorities, including law enforcement
Offering a complimentary 24-month membership of Experian IdentityWorks
Changes made: Took prompt action to secure the system involved
Continue to monitor for evolving cybersecurity threats and enhance protections in response
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(167 days from discovery to filing)
Compliance flags: CA 60-day late · 167d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.
Clock breakdown: Statute Window Elapsed Threshold Status
California
Discovered: Nov 1, 2025
→ Notified: Apr 17, 2026
167d 60 days (analyst band, pre-2026 discoveries) CA 60-day late

Statute	Window	Elapsed	Threshold	Status
California	Discovered: Nov 1, 2025 → Notified: Apr 17, 2026	167d	60 days (analyst band, pre-2026 discoveries)	CA 60-day late

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

California State AGApr 17 · first · this page

Texas State AG+5d

Maine State AG+21d

Pattern: first filing Apr 17 (CA), last May 8 (ME) — a 21-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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://oag.ca.gov/ecrime/databreach/reports/sb24-621942
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 17, 2026
Raw hash: d3cd2ddcbea7d214488dc3060aff50baa14a8141ba37f683d6785b6f79503071

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityInforma

Victim entityInforma

Incidentdiscovered Nov 1, 2025

Stated responseEngaged third-party forensics experts to secure the system and conduct a full investigation

ComplianceCA 60-day late

Extraction provenanceno artifact recorded

Source provenanceoag.ca.gov