Social EngineeringTelecom & MediaInformationVishingData ExfiltratedCustomer Data InvolvedSupply Chain (3P Vendor)Identity (basic)Government IDMediumContained

Ericsson Inc.

bd_4b391d16ed54393e · schema v1 · pii pii-v1

Severity

Medium

Discovered

Apr 28, 2025

Filed

Mar 9, 2026

To disclose

45 weeks

Affected

97state residents only

Linked

8 filings

Confidence

66%

Full breach record for Ericsson Inc. →2 incidents on file

Ericsson Inc. notified the New Hampshire Attorney General of a data security incident involving a third-party service provider. The provider experienced a vishing attack on April 28, 2025, leading to unauthorized access to limited data between April 17 and April 22, 2025. Approximately 97 New Hampshire residents were affected, with potential exposure of names and Social Security numbers. Ericsson engaged cybersecurity experts, reset passwords, notified the FBI, and provided 12 months of credit monitoring to affected individuals.

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Incident timeline

undetected · 11 days

discovery → filing · 45 weeks / 315 days

Apr 17, 2025

Begins

Apr 28, 2025

Discovered

Mar 9, 2026

Filed

This filing is one of 8 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (7) · sorted by filing gap

Maine State AGbd_1d0da259aa3724972026-03-09Candidate
California State AGbd_3ac020b40fae811c2026-03-09Verified by operator
Texas State AGbd_b7aab07b8740f4412026-03-09Verified
Massachusetts State AGbd_b8d08f1c8833b8f02026-03-09Verified

Show 3 more filings ↓

Vermont State AGbd_b9339ad22885050f2026-03-09Verified
Nebraska State AGbd_dcb9b2488cc2223a2026-03-09Verified
Indiana State AGbd_f086a2ecb41cecd32026-03-09Verified by operator

Name: Ericsson Inc.
norm: ericsson
Domain: ericsson.com

Name: Ericsson Inc.
norm: ericsson
Domain: ericsson.com
Industry: Telecom & Mediallm

Discovered: Apr 28, 2025
Breach occurred: Apr 17, 2025 – Apr 22, 2025
Undetected for: 11 daysoccurrence → discovery
Materiality determined: —
Notification sent: Mar 9, 2026
Affected individuals: 97state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Initial access: phishing_link

During the incident: Engaged a team of cybersecurity experts
Implemented a forced password reset
Notified the Federal Bureau of Investigation
Initiated a comprehensive investigation
Notified the Federal Bureau of Investigation regarding the incident
Implemented additional safeguards and training to its employees
Changes made: Arranged to provide access to credit monitoring services for 12 months through IDX
Provided impacted individuals with guidance on how to better protect against identity theft and fraud
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 45 weeks(315 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

Maine State AGMar 9 · first

California State AGMar 9 · first

Texas State AGMar 9 · first

Massachusetts State AGMar 9 · first

Vermont State AGMar 9 · first

Nebraska State AGMar 9 · first

Indiana State AGMar 9 · first

New Hampshire State AGMar 9 · first · this page

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/ericsson-20260309.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Mar 9, 2026
Raw hash: 963c7ee437142758ca59081a3ed6c7a5b0c477834307515382bbf6e9c057cfbd

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityEricsson Inc.

Victim entityEricsson Inc.

Incidentdiscovered Apr 28, 2025

Stated responseEngaged a team of cybersecurity experts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov