Social EngineeringProfessional ServicesProfessional ServicesPhishingCustomer Data InvolvedIdentity (basic)Government IDMediumContained

Hemenway & Barnes LLP and Hemenway Trust Company (Hemenway)

bd_f32539cd66ef4db7 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Sep 1, 2018

Filed

Nov 2, 2018

To disclose

9 weeks

Affected

1state residents only

Linked

3 filings

Confidence

66%

Full breach record for Hemenway & Barnes LLP and Hemenway Trust Company (Hemenway) →

Hemenway & Barnes LLP and Hemenway Trust Company notified the Montana AG of a security incident discovered on September 1, 2018, involving unauthorized access to employee email accounts. One Montana resident's name and SSN were exposed. Notification was sent on November 2, 2018, with one year of credit monitoring offered.

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Incident timeline

discovery → filing · 9 weeks / 62 days

Sep 1, 2018

Discovered

Nov 2, 2018

Filed

vs. sector median

10 wks faster

This filing is one of 3 about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (2) · sorted by filing gap

Massachusetts State AGbd_f494ba1e14b02aa52018-11-02Verified
New Hampshire State AGbd_24a879fb893d91492018-11-05 · +3dVerified

Name: BakerHostetler LLP
norm: bakerhostetler

Name: Hemenway & Barnes LLP and Hemenway Trust Company (Hemenway)
norm: hemenway barnes llp and hemenway trust company hemenway
Industry: Professional Servicesllm

Discovered: Sep 1, 2018
Materiality determined: —
Notification sent: Nov 2, 2018
Affected individuals: 1state-resident count only
Data types: Identity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External
Initial access: phishing_link

During the incident: Secured the email accounts
Began an investigation
Engaged a leading forensic firm
Conducted a thorough review of the email accounts
Mailing a notification letter by U.S. Mail
Offered one year of free credit monitoring services
Changes made: Continues to enhance its cybersecurity defenses and procedures to detect improper access to its systems
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 9 weeks(62 days from discovery to filing)
Compliance flags: — (clock not assessable for this source)

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 3 filings · 3 states

View merged incident ↗

Massachusetts State AGNov 2 · first

Montana State AGNov 2 · first · this page

New Hampshire State AG+3d

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://dojmt.gov/wp-content/uploads/Hemenway-Barnes-LLP-and-Hemenway-Trust-Company-Hemenway.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Nov 2, 2018
Raw hash: 7b50912dc5a1a39b771b930eb70cee95b7cf938f18cbfec4f10f89daa071c73f

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityBakerHostetler LLP

Victim entityHemenway & Barnes LLP and Hemenway Trust Company (Hemenway)

Incidentdiscovered Sep 1, 2018

Stated responseSecured the email accounts

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancedojmt.gov