HackingTechnologyInformationVulnerability ExploitZero-DayData ExfiltratedSupply Chain (3P Vendor)Delayed DiscoveryIdentity (basic)Government IDFinancial accountMediumContained

Informa

bd_4f8604f7f2c749bb · schema v1 · pii pii-v1

Severity

Medium

Discovered

Nov 1, 2025

Filed

Apr 21, 2026

To disclose

24 weeks

Affected

40state residents only

Confidence

66%

Full breach record for Informa →6 incidents on file

Informa filed a supplemental notice to the New Hampshire AG regarding a security incident involving Oracle E-Business Suite. Unauthorized access occurred between August 11-18, 2025, exploiting a zero-day vulnerability before public disclosure. The breach affected 40 New Hampshire residents, exposing names, SSNs, DOBs, and bank account information. Informa engaged forensic experts, notified law enforcement, and offered 24 months of credit monitoring.

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Incident timeline

undetected · 82 days

discovery → filing · 24 weeks / 171 days

Aug 11, 2025

Begins

Nov 1, 2025

Discovered

Apr 21, 2026

Filed

vs. sector median

+6 wks slower

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed40 affectedView incident

Name: Informa
norm: informa
Domain: informa.com

Name: Informa
norm: informa
Domain: informa.com
Industry: Technologyllm

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: 40state-resident count only
Data types: Identity (basic)Government IDFinancial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing ApplicationT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Filed supplemental notice with New Hampshire Office of the Attorney General, Consumer Protection Bureau
Initial access: exploit_public_facing

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
Offered 24 months of complimentary credit monitoring and fraud protection services through Experian IdentityWorks
Changes made: Implemented numerous measures to enhance the security of the Oracle EBS environment
Continues to monitor for evolving cybersecurity threats and enhance protections
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 24 weeks(171 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

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://mm.nh.gov/files/uploads/doj/remote-docs/informa-entities-20260421.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 21, 2026
Raw hash: 2c883dc2288b6948864650e70361af895d620e4e511a50c47898b9ea34763b2b

Reporting entityInforma

Victim entityInforma

Incidentdiscovered Nov 1, 2025

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

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov