HackingFinancial ServicesFinanceCustomer Data InvolvedDelayed DiscoveryFinancial accountIdentity (basic)Government IDPCIPIIMediumContained

Tufton Capital Management, LLC

bd_1171cb695015d3e7 · schema v1 · pii pii-v1

Severity

Medium

Discovered

Jun 1, 2025

Filed

Jan 13, 2026

To disclose

32 weeks

Affected

22state residents only

Linked

3 filings

Confidence

66%

Full breach record for Tufton Capital Management, LLC →

Mercer Global Advisors Inc. notified residents of Rhode Island that an unauthorized third party accessed Tufton Capital Management's network from May 15-16, 2025. Suspicious activity was detected in June 2025. The incident potentially affected personal information including names, addresses, and financial account details. Mercer engaged forensic experts, notified law enforcement and custodians, and secured the systems.

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Massachusetts clock✗ MA AG >90d32 weeks discovery → filing

Incident timeline

undetected · 17 days

discovery → filing · 32 weeks / 226 days

May 15, 2025

Begins

Jun 1, 2025

Discovered

Jan 13, 2026

Filed

vs. sector median

+24 wks slower

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

A leak claim by akira about this victim predates this filing by 243 days.View originating leak claim

Linked disclosures

Why this link?

Ransomware claims (2)

Leak Siteakirabd_c67cf52f36b6c1512025-06-16 · +211dCandidate
Leak Siteakirabd_ecc6f1deee74552a2025-05-15 · +243dVerified by operator

Name: Mercer Advisors Inc.
norm: mercer advisors
Domain: merceradvisors.com

Name: Tufton Capital Management, LLC
norm: tufton capital management
Domain: tuftoncapital.com
Industry: Financial Servicesllm

Discovered: Jun 1, 2025
Breach occurred: May 15, 2025 – May 16, 2025
Undetected for: 17 daysoccurrence → discovery
Materiality determined: —
Notification sent: Dec 12, 2025
Affected individuals: 22state-resident count only
Data types: Financial accountIdentity (basic)Government IDPCIPII
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid Accounts
Threat actor: External

During the incident: Engaged leading third-party cybersecurity experts to investigate and implement remediation measures
Notified law enforcement
Notified your custodian—the financial institution that holds your assets
Changes made: Further secure Tufton Capital’s systems to protect your information until we are able to integrate the information to Mercer Advisors’ environment
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 32 weeks(226 days from discovery to filing)
Compliance flags: MA AG >90dLeak >180d
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.

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/2026-51-tufton-capital-management/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Jan 13, 2026
Raw hash: 27cb39e8dba0ed0cdddb70c3e7d104e54d5be94712a3da7ee1d9bdde6937fa38

Linked disclosures

Ransomware claims (2)

Reporting entityMercer Advisors Inc.

Victim entityTufton Capital Management, LLC

Incidentdiscovered Jun 1, 2025

Stated responseEngaged leading third-party cybersecurity experts to investigate and implement remediation measures

ComplianceMA AG >90d

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov