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Socket.dev

Socket.dev — proactive supply chain security that detects compromised packages before CVEs exist. Founded by Feross Aboukhadijeh. Raised a $60M Series C at a $1B valuation in May 2026; 27,000+ organizations protected.

https://socket.dev ↗
securityopen-sourcesupply-chaindeveloper-toolsnpm

Key takeaways

  • Proactive supply chain security — detects compromised npm, PyPI, Go, Rust, and other packages by analyzing behavior, not just known CVEs. Catches malware before vulnerability databases are updated
  • Unicorn as of May 2026: $60M Series C at a $1B valuation led by Thrive Capital, on top of a $40M Series B (Oct 2024). $125M raised total
  • Adoption grew from 7,500 to 27,000+ organizations between Series B and Series C — 1.5M repositories protected, 10,000+ attacks blocked weekly. Customers include Anthropic, xAI, Cursor, Vercel, and Figma
  • Socket Firewall (free, launched late 2025) blocks malicious packages at install time by proxying npm, yarn, pnpm, pip, uv, and cargo — no API key required
  • Positioned against Snyk (reactive, CVE-based) — Socket catches supply chain attacks that CVE scanners miss because no CVE exists yet

FAQ

What is Socket.dev?

A supply chain security platform that detects compromised packages by analyzing behavior (network access, filesystem changes, obfuscated code) rather than just matching known CVEs. Catches malware proactively before vulnerability databases are updated.

How much does Socket.dev cost?

A free tier covers 1,000 scans/month with automatic malicious dependency blocking. Team is $25/developer/month, Business is $50/developer/month (unlimited scans, SBOM, SSO), and Enterprise is custom-priced with function-level reachability analysis. Socket Firewall is free.

Is Socket.dev a unicorn?

Yes — Socket raised a $60M Series C at a $1 billion valuation in May 2026, led by Thrive Capital, bringing total funding to $125M.

Overview

Socket.dev is a proactive supply-chain security platform that detects compromised packages by analyzing their behavior — network access, filesystem operations, obfuscated code, install scripts — rather than matching against known CVE databases. This catches supply chain attacks before vulnerability databases are updated.[1]

Founded in 2020 by Feross Aboukhadijeh, a prolific open source maintainer and npm security pioneer who teaches web security at Stanford. Socket integrates with GitHub to flag risky dependency changes in PR comments before code is merged, and has expanded well beyond its original npm/PyPI/Go coverage — Socket Firewall now wraps npm, yarn, pnpm, pip, uv, and cargo, with more ecosystems rolling out.[2]

Funding & Traction (as of June 2026)

  • Series C: $60M at a $1B valuation, announced May 20, 2026 — led by Thrive Capital with Andreessen Horowitz, Abstract Ventures, and Capital One Ventures. Total raised: $125M.[3]
  • Series B: $40M (October 2024), led by Abstract Ventures with a16z and angels including Bret Taylor and Phil Venables.[4]
  • Adoption: grew from 7,500 to 27,000+ organizations between Series B and Series C; 1.5M repositories protected, 11.6M monthly commits secured, 10,000+ supply chain attacks blocked weekly.[3]
  • Customers: Anthropic, xAI, Replit, Cursor, Vercel, Figma, Gusto, Mercado Libre, Cribl, plus Fortune 100 financial services and media companies.[3]
  • Acquisitions: Coana (reachability analysis) and Secure Annex (browser extension security), extending coverage to browser extensions, code editors, and AI tooling.[3]

Product Expansion

Socket Firewall (launched late 2025) is a free install-time blocker: it spins up an ephemeral proxy around your package manager and refuses to fetch packages — including transitive dependencies — that Socket has confirmed as malware. No API key or configuration required. The free tier blocks human-verified malware but only warns on AI-detected potential malware; private registries require the Enterprise edition.[5][2]

The core platform pairs AI-assisted behavioral scanning (70+ risk types) with reachability analysis from the Coana acquisition — Socket claims function-level reachability cuts up to 90% of irrelevant CVE alerts at the Enterprise tier — plus SBOM import/export, AI model scanning, and Certified Patches for CVE remediation.[6][3]

Research arm: Socket's threat research team regularly breaks supply-chain attack stories. In the March 2026 Axios compromise, a malicious dependency (plain-crypto-js@4.2.1) carrying a multi-stage remote access trojan was flagged by Socket's automated malware detection within six minutes of publication.[7]

Pricing (from live page, June 2026)

TierPriceIncludes
Free$01,000 scans/mo, 3 members, 70+ risk types, automatic malicious dependency blocking, AI analysis
Team$25/dev/mo5,000 scans/mo, 10 members, precomputed reachability (claims 60% CVE false-positive reduction), Slack alerts
Business$50/dev/moUnlimited scans/members, SBOM import/export, SSO/SAML, AI model scanning
EnterpriseCustomFunction-level reachability, GitLab/Bitbucket/Azure DevOps, SCIM, audit logs
[6]

Competitive Position

Strengths: Proactive detection (not reactive CVE matching) — catches zero-day supply chain attacks like the Axios and North Korea-linked package campaigns. Free install-time Firewall is a strong adoption wedge. GitHub PR integration. Strong founder credibility and now strong capitalization ($1B valuation, marquee AI-lab customers).[8][3]

Cautions: Behavioral and AI-driven analysis carries inherent false-positive risk — Socket Firewall's free tier deliberately downgrades AI-detected (unconfirmed) malware to warnings rather than blocks, and G2 reviewers note that triaging and confirming which alerts matter still takes meaningful effort even when setup is easy.[2][9] Paid tiers are per-developer and scan-capped below Business. Private-registry support is Enterprise-only.[6]

Bottom Line

Socket has graduated from promising challenger to category leader in proactive supply-chain security: a $1B valuation, 27,000+ organizations, a free Firewall that blocks malware at install time across six package managers, and a research team that routinely catches attacks within minutes. The bet against it is alert-triage fatigue and incumbents (Snyk, GitHub) closing the proactive-detection gap — but as of June 2026, Socket is setting the pace.[3]

Research by Ry Walker Research

Sources

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