Social EngineeringFinancial ServicesFinancePhishingCustomer Data InvolvedFinancial accountIdentity (basic)Government IDMediumContained

GCSS Advisors

bd_a0725416aa88dbc9 · schema v1 · pii pii-v1

Severity

Medium

Discovered

—

Filed

Aug 7, 2026

To disclose

—

Affected

Not disclosed

Confidence

67%

Full breach record for GCSS Advisors →

GCSS Advisors, a financial advisory firm, notified Massachusetts residents of a phishing event impacting customer email accounts. The incident involved unauthorized access to customer information, including names and government identifiers. GCSS secured the account, notified law enforcement, and provided 24 months of complimentary credit and identity monitoring via IDX to affected individuals.

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Incident timeline — partial

? — ?

Breach window unknown

Aug 7, 2026

Filed

—

No filing yet · watching

Compliance clocks stay unassessable until a regulatory filing lands. Dashed segments fill in automatically when corroboration arrives.

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed1 affectedView incident

Name: GCSS Advisors
norm: gcss advisors
Domain: gcssadvisors.com

Name: GCSS Advisors
norm: gcss advisors
Domain: gcssadvisors.com
Industry: Financial Servicesllm

Discovered: —
Materiality determined: —
Notification sent: —
Affected individuals: Not disclosed
Data types: Financial accountIdentity (basic)Government ID
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing Link
Threat actor: External
Regulator citations: notified law enforcement and relevant regulatory authorities
Initial access: phishing_link

During the incident: Took steps to secure the account
Confirm the security of the email environment
Conduct a comprehensive investigation
Notified law enforcement and relevant regulatory authorities
Reviewing and enhancing our existing policies and procedures
Changes made: Offering you complimentary access to 24 months of credit and identity monitoring services through IDX
Source: Quoted from the filing itself, not independently verified.

Compliance flags: — (clock not assessable for this source)

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/2026-1318-gcss-advisors/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 7, 2026
Raw hash: 2d6e7d36f49afebbd51153ffcd63030295a7e1f7277217aa2e196eb8ec24a7c6

Reporting entityGCSS Advisors

Victim entityGCSS Advisors

IncidentPhishing

Stated responseTook steps to secure the account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov