Social EngineeringFinancial ServicesFinanceVishingStolen CredentialsEmployee Data InvolvedIdentity (basic)LowResolved

Bessemer Venture Partners

bd_b5d359378c4fb178 · schema v1 · pii pii-v2

Severity

Low

Discovered

Aug 3, 2026

Filed

Sep 1, 2026

To disclose

—

Affected

82state residents only

Confidence

66%

Full breach record for Bessemer Venture Partners →

Bessemer Venture Partners experienced a voice phishing (vishing) incident on August 3, 2026, resulting in temporary unauthorized access to certain employee accounts. The incident was contained by August 4, 2026. Affected data included names and other personal information stored in cloud-hosted platforms. The firm engaged forensic experts, notified law enforcement, and is offering two years of credit monitoring to affected individuals.

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Incident timeline

Aug 3, 2026

Begins

Aug 3, 2026

Discovered

Sep 1, 2026

Filed

Tracked as a single-filing incident — the only disclosure on record for this event so far.Confirmed82 affectedView incident

Name: Bessemer Venture Partners
norm: bessemer venture partners

Name: Bessemer Venture Partners
norm: bessemer venture
Domain: bvp.com
Industry: Financial Servicesllm

Discovered: Aug 3, 2026
Breach occurred: Aug 3, 2026
Undetected for: 0 daysoccurrence → discovery
Materiality determined: —
Notification sent: Sep 30, 2026
Affected individuals: 82state-resident count only
Data types: Identity (basic)
Attack vector: Phishing
MITRE ATT&CK: T1566.002 Spearphishing LinkT1078 Valid Accounts
Threat actor: External
Initial access: phishing_link

During the incident: Took immediate action to contain and remediate the situation
Notified law enforcement
Engaged a leading cyber forensic firm to assist with our investigation and response
Changes made: Offering two years of free credit monitoring and identity protection services provided by 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/2026-1680-deer-management-co-llc/download
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 1, 2026
Raw hash: 3d3f46d256c284bdddd713d33743e5c102e417026337573e7288e702a0e4fed8

Reporting entityBessemer Venture Partners

Victim entityBessemer Venture Partners

Incidentdiscovered Aug 3, 2026

Stated responseTook immediate action to contain and remediate the situation

Complianceclock not assessable

Extraction provenanceno artifact recorded

Source provenancewww.mass.gov