Social EngineeringTechnologyTelecom & MediaInformationVishingStolen CredentialsSupply Chain (3P Vendor)Customer Data InvolvedEmployee Data InvolvedTargetedIdentity (basic)Government IDHighContained

Ericsson Inc.

bd_1d0da259aa372497 · schema v1 · pii pii-v1

Severity

High

Discovered

Apr 28, 2025

Filed

Mar 9, 2026

To disclose

45 weeks

Affected · nationwide

15,66121 in this filing

Linked

8 filings

Confidence

65%

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

Ericsson Inc reported a data security incident involving a third-party service provider. Between April 17-22, 2025, unauthorized access occurred via a vishing attack on a service provider employee. The incident impacted the personal information (name and SSN) of approximately 15,661 individuals, including 21 Maine residents. Ericsson engaged forensic experts, notified the FBI, and provided 12 months of credit monitoring to affected individuals.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Apr 28, 2025 → Filed with AG Mar 9, 2026315d ✗ ME AG >90d45 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

undetected · 11 days

discovery → filing · 45 weeks / 315 days

Apr 17, 2025

Begins

Apr 28, 2025

Discovered

Mar 9, 2026

Filed

vs. sector median

+26 wks slower

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

California State AGbd_3ac020b40fae811c2026-03-09Verified by operator
New Hampshire State AGbd_4b391d16ed54393e2026-03-09Verified
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: Constangy, Brooks, Smith & Prophete, LLP
norm: constangy brooks smith prophete

Name: Ericsson Inc.
norm: ericsson
Domain: ericsson.com
Industry: TechnologyllmTelecom & 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: 15,661state + nationwide
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: ExternalFinancial
Regulator citations: Notified the Federal Bureau of Investigation
Third party: via Service Provider
Initial access: phishing_link

During the incident: Engaged a team of cybersecurity experts
Implementing a forced password reset
Notifying the Federal Bureau of Investigation
Initiating a comprehensive investigation
Implementing additional safeguards and training to its employees
Changes made: Offering 12 months of complimentary credit monitoring and identity theft protection through IDX
Providing 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: ME AG >90d · 315dME resident >180d · 315d
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Apr 28, 2025
→ Filed with AG: Mar 9, 2026
315d 90 days ME AG >90d
Maine
Discovered: Apr 28, 2025
→ Notified: Mar 9, 2026
315d 180 days ME resident >180d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Apr 28, 2025 → Filed with AG: Mar 9, 2026	315d	90 days	ME AG >90d
Maine	Discovered: Apr 28, 2025 → Notified: Mar 9, 2026	315d	180 days	ME resident >180d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 8 filings · 8 states

View merged incident ↗

California State AGMar 9 · first

New Hampshire 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

Maine 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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/d920097e-fba8-455c-b632-c7e115e5eb15.html
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: 7020ca16fc6b0094049fbfe4eff658b2588d85cd467423c1bdc9ecb61cae3cc8

Linked disclosures

Regulatory filings (7) · sorted by filing gap

Reporting entityConstangy, Brooks, Smith & Prophete, LLP

Victim entityEricsson Inc.

Incidentdiscovered Apr 28, 2025

Stated responseEngaged a team of cybersecurity experts

ComplianceME AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov