UnknownEnergy & UtilitiesUtilitiesCustomer Data InvolvedIdentity (basic)Government IDHigh

EVERSOURCE ENERGY

bd_a33976649fb67369 · schema v1 · pii pii-v1

Severity

High

Discovered

Mar 16, 2021

Filed

Apr 16, 2021

To disclose

4 weeks

Affected · nationwide

11,67448 in this filing

Confidence

50%

Full breach record for EVERSOURCE ENERGY →2 incidents on file

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Mar 16, 2021 → Filed with AG Apr 16, 202131d ⏱ ME AG >30d4 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 · 564 days

discovery → filing · 4 weeks / 31 days

Aug 30, 2019

Begins

Mar 16, 2021

Discovered

Apr 16, 2021

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed11,674 affectedView incident

Name: EVERSOURCE ENERGY
norm: eversource energy

Name: EVERSOURCE ENERGY
norm: eversource energy
Also named: NSTAR Electric Companydba oflegal entity
Eversource Energydba oftrade name
Industry: Energy & Utilitiesllm

Discovered: Mar 16, 2021
Breach occurred: Aug 30, 2019
Undetected for: 564 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 16, 2021
Affected individuals: 11,674state + nationwide
Data types: Identity (basic)Government ID
Data elements: Social Security number
Attack vector: Unknown

Changes made: Offered 24 months of identity theft protection services provided by CyberScout.
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 4 weeks(31 days from discovery to filing)
Compliance flags: ME AG >30d · 31d
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: Mar 16, 2021
→ Filed with AG: Apr 16, 2021
31d 30 days (soft) ME AG >30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Mar 16, 2021 → Filed with AG: Apr 16, 2021	31d	30 days (soft)	ME AG >30d

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://www.maine.gov/agviewer/content/ag/985235c7-cb95-4be2-8792-a1252b4f8318/78daaa2b-a79b-4d5d-8460-8d9007ace3ba.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 16, 2021
Raw hash: b74219fd17372d0e097815c276831614a085e8477fd8af004dfdb7c3ce852064

Reporting entityEVERSOURCE ENERGY

Victim entityEVERSOURCE ENERGY

Incidentdiscovered Mar 16, 2021

Stated responseOffered 24 months of identity theft protection services provided by CyberScout.

ComplianceME AG >30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov