HackingFinancial ServicesFinanceStolen CredentialsCustomer Data InvolvedGovernment IDIdentity (basic)Financial accountMediumContained

ALTA PARK CAPITAL, LP

bd_a212e96ffeee96a5 · schema v1 · pii pii-v2

Severity

Medium

Discovered

Jun 17, 2026

Filed

Aug 14, 2026

To disclose

8 weeks

Affected

3state residents only

Linked

3 filings

Confidence

66%

Full breach record for ALTA PARK CAPITAL, LP →

Alta Park Capital, LP notified the NH Attorney General that an unauthorized actor accessed an employee's email account between April 21, 2026, and June 17, 2026, sending unauthorized emails and viewing limited emails. The investigation determined that sensitive information, including names, Social Security numbers, and financial account information, was present in email attachments accessible to the actor. Approximately 3 New Hampshire residents were affected. APC secured the account, engaged forensic specialists, and is offering 24 months of credit monitoring.

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Incident timeline

undetected · 57 days

discovery → filing · 8 weeks / 58 days

Apr 21, 2026

Begins

Jun 17, 2026

Discovered

Aug 14, 2026

Filed

vs. sector median

on median

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

Vermont State AGbd_1dca86cfcec4c0b82026-08-14Verified
Massachusetts State AGbd_b53295453c9a5d752026-08-01 · +13dCandidate

Name: ALTA PARK CAPITAL, LP
norm: alta park

Name: ALTA PARK CAPITAL, LP
norm: alta park
Industry: Financial Servicesllm

Discovered: Jun 17, 2026
Breach occurred: Apr 21, 2026 – Jun 17, 2026
Undetected for: 57 daysoccurrence → discovery
Materiality determined: —
Notification sent: Aug 14, 2026
Affected individuals: 3state-resident count only
Data types: Government IDIdentity (basic)Financial account
Attack vector: Unauthorized Access
MITRE ATT&CK: T1078 Valid AccountsT1114 Email Collection
Threat actor: External
Regulator citations: Providing written notice of this event to relevant regulators, as necessary
Initial access: valid_credentials

During the incident: Secured the employee’s email account
Engaged external cybersecurity specialists to commence a full investigation
Conducted a detailed review of the accessed emails and email attachments
Provided written notice to approximately three (3) New Hampshire residents
Providing affected individuals with access to credit monitoring and identity restoration services for twenty-four (24) months through TransUnion
Changes made: Implementing enhanced safeguards
Reviewing its policies and procedures as appropriate
Implemented additional security measures to better prevent future similar incidents
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 8 weeks(58 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 AGAug 1 · first

Vermont State AG+13d

New Hampshire State AG+13d · this page

Pattern: first filing Aug 1 (MA), last Aug 14 (NH) — a 13-day rolling notification. Rolling spreads often mean counsel is filing as thresholds trip per state. Why this link?

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/alta-park-capital-20260814.pdf
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Aug 14, 2026
Raw hash: c6e0f2c9885aebe6497d9d97b4a9fa90440be00d4e1cd8e67feda184eb0fc258

Linked disclosures

Regulatory filings (2) · sorted by filing gap

Reporting entityALTA PARK CAPITAL, LP

Victim entityALTA PARK CAPITAL, LP

Incidentdiscovered Jun 17, 2026

Stated responseSecured the employee’s email account

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancemm.nh.gov