HackingIdentity (basic)Government IDPIIMediumContained

Klevorn & Company, P.C.

bd_1dcf16f74ab1d756 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

May 8, 2026

To disclose

—

Affected

4state residents only

Linked

4 records

Confidence

68%

Full breach record for Klevorn & Company, P.C. →

Klevorn & Company, P.C. notified Massachusetts residents of a cybersecurity incident involving unauthorized access to its email tenant. The breach exposed personal information, prompting the firm to enhance security safeguards, provide cybersecurity training, and offer 24 months of complimentary credit monitoring via TransUnion. No identity theft or fraud has been confirmed.

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Leak gap clock⏱ Leak >30d

⚠ no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Incident timeline — partial

? — ?

Breach window unknown

May 8, 2026

Filed

No interval is drawn: no breach start or discovery date is on record for this filing.

This filing is one of 4 records about the same incident.View merged incident

A leak claim by qilin about this victim was first seen 65 days before this filing.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (1)

Leak Siteqilinbd_4e577c45c0e330b52026-02-16 · +81dVerified by operator

Regulatory filings (2) · sorted by filing gap

Indiana State AGbd_7ea083552a01ca482026-05-08Verified
Nebraska State AGbd_ec9582dea9a7f7c82026-05-08Verified by operator

Name: Klevorn & Company, P.C.
norm: klevorn
Domain: klevornco.com

Name: Klevorn & Company, P.C.
norm: klevorn
Domain: klevornco.com

Discovered: —
Materiality determined: —
Notification sent: May 8, 2026
Affected individuals: 4state-resident count only
Data types: Identity (basic)Government IDPII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1190 Exploit Public-Facing Application
Threat actor: External
Regulator citations: notifying state regulators
Initial access: exploit_public_facing

During the incident: Updating administrative and technical safeguards
Providing additional cybersecurity training for our personnel
Notifying state regulators
Arranged for you to enroll, at no cost to you, in credit monitoring through Transunion for twenty-four (24) months
Changes made: Updating administrative and technical safeguards
Providing additional cybersecurity training for our personnel
Source: Quoted from the filing itself, not independently verified.

Compliance flags: Leak >30d
Discovery-date grounding: no discovery dateNo discovery date was extracted, so no notification clock can be evaluated.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Indiana State AGMay 8 · first

Nebraska State AGMay 8 · first

Massachusetts State AGMay 8 · 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.mass.gov/doc/2026-732-klevorn-company-pc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: May 8, 2026
Raw hash: 0f98af69859e57ccb4e690d4d3ace66e4d8fa81992bba1839bffe8029ab940ee

Linked disclosures

Ransomware claims (1)

Regulatory filings (2) · sorted by filing gap

Reporting entityKlevorn & Company, P.C.

Victim entityKlevorn & Company, P.C.

IncidentUnauthorized Access

Stated responseUpdating administrative and technical safeguards

ComplianceLeak >30d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov