Social EngineeringProfessional ServicesProfessional ServicesPhishingCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Tanton Grubman CPAs LLP

bd_bd0d415f07569bef · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jan 14, 2021

Filed

Apr 9, 2021

To disclose

12 weeks

Affected

1state residents only

Linked

2 filings

Confidence

66%

Full breach record for Tanton Grubman CPAs LLP →

Tanton Grubman CPAs LLP notified the New Hampshire Attorney General of a security incident involving one NH resident. An unauthorized third party accessed an employee email account between Sept 4 and Dec 8, 2020. The account contained the resident's name and SSN. Tanton Grubman secured the account, engaged forensic investigators, and offered 12 months of credit monitoring. The incident was discovered on Jan 14, 2021, and notification was sent on April 8, 2021.

J jump to incidentP pin to compareR raw source

Incident timeline

undetected · 132 days

discovery → filing · 12 weeks / 85 days

Sep 4, 2020

Begins

Jan 14, 2021

Discovered

Apr 9, 2021

Filed

vs. sector median

7 wks faster

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

Linked disclosures

Why this link?

Regulatory filings (1) · sorted by filing gap

Massachusetts State AGbd_2c493574a2e8dabb2021-04-08 · +1dVerified

Name: Tanton Grubman CPAs LLP
norm: tanton grubman cpas

Name: Tanton Grubman CPAs LLP
norm: tanton grubman cpas
Industry: Professional Servicesllm

Discovered: Jan 14, 2021
Breach occurred: Sep 4, 2020 – Dec 8, 2020
Undetected for: 132 daysoccurrence → discovery
Materiality determined: —
Notification sent: Apr 8, 2021
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: External
Initial access: phishing_link

During the incident: Secured the email account to prevent further access
Engaged a leading forensic security firm to investigate and confirm the security of Tanton Grubman’s email and computer systems
Provided notice of the incident to the potentially affected individual
Offered twelve (12) months of complimentary credit monitoring and identity theft protection services
Changes made: Undertaking efforts to reduce the risk of a similar incident occurring in the future, including implementing additional technical safeguards
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(85 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 2 filings · 2 states

View merged incident ↗

Massachusetts State AGApr 8 · first

New Hampshire State AG+1d · 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://mm.nh.gov/files/uploads/doj/remote-docs/tanton-grubman-20210409.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Apr 9, 2021
Raw hash: ebd34fb83a7f7dc89ff783ac95956cdf672e0d27052d4e0f966a37a042c49a9f

Linked disclosures

Regulatory filings (1) · sorted by filing gap

Reporting entityTanton Grubman CPAs LLP

Victim entityTanton Grubman CPAs LLP

Incidentdiscovered Jan 14, 2021

Stated responseSecured the email account to prevent further access

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov