Feross Aboukhadijeh
Angel Investor
Stanford, United States
Feross Aboukhadijeh is a seed investor in Stanford focused on Software and Cyber Security. Feross is founder and CEO at Socket (https://socket.dev), a developer-first security platform. Feross has worked in open source software for 10+ years writing some of the most-downloaded JavaScript packages. Feross is a lecturer at Stanford where he teaches CS 253 Web Security. Socket makes a developer-first security platform thatprevents vulnerable and malicious open source dependencies from infiltrating your software supply chain. Thousands of organizations in every industry use Socket to safely discover, audit, and manage OSS at scale.
- Total investments:
- 23
- Last investment:
- Lead investor:
- 0%
Last updated:
For AI agents: llms.txt
Industries Feross Aboukhadijeh invests in
Stages Feross Aboukhadijeh invests in
Countries Feross Aboukhadijeh invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $3M–$9M
- Pre-Seed
- $1.7M–$2.8M
- Series A
- $8.5M–$19M
Investment Focus
Industry
- Software 5 (22%)
- Cyber Security 4 (17%)
- Developer Tools 3 (13%)
- Information Technology 3 (13%)
- Security 2 (9%)
Stage
- Seed 11 (48%)
- Pre-Seed 6 (26%)
- Series A 2 (9%)
- Angel 1 (4%)
- Equity Crowdfunding 1 (4%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
| Idler powers intelligent systems with scalable, on-demand RL environments for research, product, or simulation. | $9M / Seed / Aug 20, 2026 | ||
| Langbase helps developers ship composable AI agents with hyper-personalized memory (RAG).Langbase is the composable AI infrastructure and developer experience to build, collaborate, and deploy any AI agents (AI features). Our mission is to make AI accessible to everyone, any developer not just AI/ML experts. We are the only composable AIinfrastructure. That's all we do. | $5M / Seed / Feb 25, 2026 | ||
| Opine helps to automate the pre-sales efforts for enterprise software transaction by removing the hassle of managing POCs. | $5M / Seed / Dec 09, 2025 | ||
| A company developing diffusion based large language models | $50M / Seed / Nov 06, 2025 | ||
| Arcjet helps developers protect their apps in just a few lines of code. Implement rate limiting, bot protection, email validation, and defense against common attacks. | $8.5M / Series A / Oct 08, 2025 | ||
| Corridor provides a security platform that integrates directly with AI coding tools and developer workflows to guide secure code generation in real time. It reviews code and pull requests to identify vulnerabilities, enforce security guardrails, and deliver actionable remediation guidance at the source. The platform also offers visibility intoAI-generated code usage, policy compliance, and security events across engineering teams. | $5.4M / Seed / Aug 05, 2025 | ||
| A company developing diffusion based large language models | $6M / Seed / Feb 25, 2025 | ||
| Arcjet helps developers protect their apps in just a few lines of code. Implement rate limiting, bot protection, email validation, and defense against common attacks. | $3.6M / Seed / Sep 10, 2024 | ||
| Langbase helps developers ship composable AI agents with hyper-personalized memory (RAG).Langbase is the composable AI infrastructure and developer experience to build, collaborate, and deploy any AI agents (AI features). Our mission is to make AI accessible to everyone, any developer not just AI/ML experts. We are the only composable AIinfrastructure. That's all we do. | Pre-Seed / Aug 01, 2024 | ||
| Anonymously match and meet next-gen startups that align with your team’s top initiatives. Never respond to cold emails again. Visit Sagetap.io for more. | $6.8M / Seed / May 28, 2024 | ||
| See all 23 investments → | |||
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FAQ
What does Feross Aboukhadijeh invest in?
Feross Aboukhadijeh invests primarily in Software, Cyber Security and Developer Tools startups, most often at Seed and Pre-Seed stage. Most of the 23 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Feross Aboukhadijeh's check size?
Feross Aboukhadijeh typically joins rounds of $3M–$9M at Seed, $1.7M–$2.8M at Pre-Seed and $8.5M–$19M at Series A. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Feross Aboukhadijeh participates in.
How do I contact Feross Aboukhadijeh?
Public channels for Feross Aboukhadijeh include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
When did Feross Aboukhadijeh last invest?
The most recent investment recorded for Feross Aboukhadijeh closed in Aug 2026. Shizune tracks 23 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Oct 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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