HackingOtherCustomer Data InvolvedGovernment IDIdentity (basic)MediumContained

Cornerstone Energy Services, Inc.

bd_700cafa16f819d52 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jul 25, 2023

Filed

Aug 21, 2023

To disclose

27 days

Affected · nationwide

500200 in this filing

Linked

2 filings

Confidence

66%

Full breach record for Cornerstone Energy Services, Inc. →

Cornerstone Energy Services, Inc. reported an external system breach (hacking) on July 25, 2023, affecting 500 individuals, including 200 Maine residents. The incident involved the acquisition of names and driver's license numbers. The company notified affected individuals electronically on July 26, 2023, and provided 24 months of Life Lock identity protection services.

J jump to incidentP pin to compareR raw source

Maine clockDiscovered Jul 25, 2023 → Filed with AG Aug 21, 202327d ✓ ME AG ≤30d27 days discovery → filing

⚠ occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.

Incident timeline

discovery → filing · 27 days

Jul 25, 2023

Begins

Jul 25, 2023

Discovered

Aug 21, 2023

Filed

vs. sector median

4 wks faster

This filing is one of 2 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_c80735869447447b2023-08-21Verified

Name: Cornerstone Energy Services, Inc.
norm: cornerstone energy

Name: Cornerstone Energy Services, Inc.
norm: cornerstone energy
Industry: Otherllm

Discovered: Jul 25, 2023
Breach occurred: Jul 25, 2023
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Jul 26, 2023
Affected individuals: 500state + nationwide
Data types: Government IDIdentity (basic)
Data elements: Driver's licence number
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: Filed data breach notice with Maine Attorney General
Initial access: exploit_public_facing

During the incident: Sent electronic notification to affected individuals
Offered 24 months of Life Lock identity theft protection services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 27 days(27 days from discovery to filing)
Compliance flags: ME AG ≤30d · 27d
Discovery-date grounding: occurrence dateThe stored discovery date equals the breach OCCURRENCE date. Detection is normally later, so this OVERSTATES the delay — a 'late' verdict here may not be real.
Clock breakdown: Statute Window Elapsed Threshold Status
Maine
Discovered: Jul 25, 2023
→ Filed with AG: Aug 21, 2023
27d 30 days ME AG ≤30d

Statute	Window	Elapsed	Threshold	Status
Maine	Discovered: Jul 25, 2023 → Filed with AG: Aug 21, 2023	27d	30 days	ME AG ≤30d

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGAug 21 · first

Maine State AGAug 21 · 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-a1252b4f8318/22e7f50b-ea6d-40f1-9f4d-02188d85fa02.shtml
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 21, 2023
Raw hash: 2343c1458d75dfbe6ba72f0a8c2e8f5d43f5c8cd838b2bfe2c5c8fa940df4b2d

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityCornerstone Energy Services, Inc.

Victim entityCornerstone Energy Services, Inc.

Incidentdiscovered Jul 25, 2023

Stated responseSent electronic notification to affected individuals

ComplianceME AG ≤30d

Extraction provenanceno artifact recorded

Source provenancewww.maine.gov