HackingProfessional ServicesProfessional ServicesData ExfiltratedCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Mazzola Mardon, P.C.

bd_51499eeee61ed282 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Aug 9, 2025

Filed

Apr 15, 2026

To disclose

36 weeks

Affected

1state residents only

Linked

2 filings

Confidence

64%

Full breach record for Mazzola Mardon, P.C. →

Mazzola Mardon, P.C. notified individuals that a bad actor copied/downloaded files on August 8, 2025, detected on August 9, 2025. Affected data includes names, SSNs, DOBs, addresses, and government IDs. The firm engaged cybersecurity specialists, remediated the event, replaced its MSP, and offered 24 months of credit monitoring.

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Massachusetts clock✗ MA AG >90d36 weeks discovery → filing

Incident timeline

undetected · 1 days

discovery → filing · 36 weeks / 249 days

Aug 8, 2025

Begins

Aug 9, 2025

Discovered

Apr 15, 2026

Filed

vs. sector median

+17 wks slower

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

HHS OCRbd_40b3a7148c77e1d42026-04-15Verified

Name: Mazzola Mardon, P.C.
norm: mazzola mardon

Name: Mazzola Mardon, P.C.
norm: mazzola mardon
Industry: Professional Servicesllm

Discovered: Aug 9, 2025
Breach occurred: Aug 8, 2025
Undetected for: 1 dayoccurrence → discovery
Materiality determined: —
Notification sent: Apr 15, 2026
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Unknown
MITRE ATT&CK: T1078 Valid AccountsT1041 Exfiltration Over C2 Channel
Threat actor: External

During the incident: Took steps to ensure the security of the data stored on our systems
Conducted a comprehensive investigation with the assistance of cybersecurity specialists
Remediated the event
Implemented additional security measures to help mitigate the reoccurrence of future events
Replaced our managed service provider
Reviewing and implementing, as needed, additional policies and procedures
Changes made: Providing access to free credit monitoring and identity protection services
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 36 weeks(249 days from discovery to filing)
Compliance flags: MA AG >90d
Discovery-date grounding: letter-groundedThe discovery date is the detection date narrated in the notification letter — the defensible tier.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

HHS OCRApr 15 · first

Massachusetts State AGApr 15 · 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/2026-576-mazzola-mardon-pc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 15, 2026
Raw hash: 594e1bb063b1ef5dbd61d402950f2a3d7e9d2746855e702db7c01b4d91a9c9a2

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityMazzola Mardon, P.C.

Victim entityMazzola Mardon, P.C.

Incidentdiscovered Aug 9, 2025

Stated responseTook steps to ensure the security of the data stored on our systems

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov