Norwest Venture Partners 2025 Data Breach
Financial Services / Venture Capital & Growth Equity / Multi-stage investment firm / United States (offices in India and Israel)
Norwest Venture Partners 2025 Data Breach
Palo Alto multi-stage venture capital and growth-equity firm founded in 1961, investing across technology, healthcare and consumer companies.
Confirmed · ObscureIQ Intelligence
Breach Risk Index i
73/100
Lower riskHigher risk
High and current: recent, valuable data circulating on the dark web now.
Data Sensitivity i
StandardExposed data is largely lower-sensitivity. Standard identity-protection precautions are advised.
4.2k rowsRecords
2025Year
The Breach Risk Index (BRI) is a proprietary 0–100 score rating how dangerous a breach is right now, based on how recently the data has been circulating on the dark web and how valuable it is to attackers.
Breach Summary
Around July 2025, Norwest Venture Partners was compromised by the Sinobi ransomware group, which listed the firm on its leak site on August 15, 2025 and posted an extortion demand reported near $96.2 million under a dual-extortion model. Roughly 4,200 records covering staff and limited-partner/investor data are associated with the listing; specific fields were not enumerated beyond names. Sinobi is assessed as a rebrand or offshoot of the Lynx/INC operations and has been tied to compromised SonicWall SSL VPN access.
Full threat analysis, exploitation vectors, and principal guidance below.
10 additional sections · verified field analysis · defensive doctrine
Querying breach corpus…
Cross-referencing exposed field types…
Resolving threat-actor attribution…
Compiling principal risk advisory…
4.2k rows records analyzed
About Norwest Venture Partners
Norwest Venture Partners is a multi-stage venture capital and growth-equity firm founded in 1961 and headquartered in Palo Alto, California, with offices in India and Israel. It invests across technology, healthcare and consumer companies and manages billions in assets, historically anchored by Wells Fargo as its principal limited partner.
Why They Hold Your Data
As an investment firm, Norwest holds records on portfolio-company founders and executives, limited partners and investors, and its own staff, spanning names, contact details and potentially financial, deal and diligence material. Investor and portfolio records are commercially sensitive even where the confirmed exposed field set is narrow.
Recent Developments
Sinobi listed Norwest on its leak site on August 15, 2025 following an estimated July 2025 intrusion, threatening disclosure alongside a reported ~$96.2M demand; the firm continues to operate normally.
Data Points Exposed
1 verified field types
Full Name
Breach Impact
Exposure of a venture firm's investor and staff data carries reputational weight out of proportion to the record count, given the confidentiality expectations of limited partners and founders. The listing creates notification considerations and, if deal or diligence material was taken, potential commercial and relationship harm beyond the enumerated names.
Principal Risk Advisory
What this means for a principal
A financial-institution breach: account, wealth or payment data supports direct fraud and highly credible financial-impersonation scams. For a high-profile principal the main risk is credible impersonation and enrichment of existing exposure.
What You Should Do
- Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.
How ObscureIQ Can Help
- Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
- Exposure mapping: cross-reference the exposed identifiers against broker-available data to size and prioritize the principal's wider footprint.
- ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
S
Threat Actor: SinobiConfidence: Low
Motivation: Unknown
A low-confidence alias without enough reliable public sourcing for a stable threat actor profile. It may be a misspelling, short-lived alias, or forum handle.
Protect Yourself
Check If You're Affected
Enter your email to check whether your data appears in this breach. We’ll send a 6-digit code to confirm it’s your address.
Get Free Breach Alerts
Be the first to know when new breaches are disclosed. Free forever — confirm your email with a 6-digit code.
High-Risk? Get an Exposure Audit
Executives, public figures, and high-visibility operators can receive tailored exposure intelligence and hardening guidance.
Request Consultation