Zane Lackey
General Partner @ Andreessen Horowitz
Austin, United States
Zane Lackey is a seed investor at Andreessen Horowitz in Austin focused on Cyber Security and Software. Zane Lackey is the General Partner at Andreessen Horowitz. Additionally, Zane Lackey has had 3 past jobs including Founder and Chief Security Officer at Signal Sciences.
- Total investments:
- 31
- Last investment:
- Lead investor:
- 26%
Last updated:
For AI agents: llms.txt
Industries Zane Lackey invests in
Stages Zane Lackey invests in
Countries Zane Lackey invests in
Round sizes
Contacts
| Type | Contact | Validation |
|---|---|---|
| Work email | ||
| Personal email | ||
| Work phone | ||
| Personal phone | ||
| Socials |
Round size
- Seed
- $2M–$8M
- Series A
- $8.5M–$75M
- Series B
- $30M–$40M
Investment Focus
Industry
- Cyber Security 14 (45%)
- Software 11 (35%)
- Security 9 (29%)
- Cloud Security 5 (16%)
- SaaS 4 (13%)
Stage
- Seed 13 (42%)
- Series A 9 (29%)
- Series B 4 (13%)
- Pre-Seed 2 (6%)
- Series C 2 (6%)
Country
- United States 19 (61%)
- Canada 1 (3%)
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Neo Security
|
Neo Security is a cybersecurity company that develops an AI security platform for enterprises adopting agentic AI and AI-enabled software. The company helps organizations discover, assess, and secure AI-powered applications by providing visibility into how AI systems access data, make decisions, and interact with enterprise environments. Itsplatform is designed to address emerging security risks created by the rapid integration of AI capabilities into existing business software.The platform provides AI application discovery, AI asset inventory, security posture management, access governance, policy enforcement, risk assessment, and continuous monitoring for AI-enabled applications and autonomous agents. Neo enables security teams to identify AI-powered software across the enterprise, understand its permissions and underlying models, evaluate data access and usage, and implement controls to reduce security and compliance risks associated with agentic AI. | $75M / Series A / Jul 20, 2026 | |
Socket
|
Socket is a new security company that can protect your most critical apps from supply chain attacks. We are taking an entirely new approach to one of the hardest problems in security in a stagnant part of the industry that has historically been obsessed with just reporting on known vulnerabilities.Socket is built by a team of open sourcemaintainers with over 1 billion monthly downloads. Everyone on the Socket team is an open source maintainer. We are all driven to defend the open source ecosystem from supply chain attacks and make it safe for everyone.Socket is unique because, unlike other tools, it detects and blocks supply chain attacks before they strike, mitigating the worst consequences. | $60M / Series C / May 20, 2026 | |
Doppel
|
Doppel is an AI-native security platform that helps organizations defend against social engineering risks and digital impersonation. It continuously monitors threats across multiple channels, including domains, social media, paid advertising, messaging apps, and the dark web, then maps those threats into a real-time threat graph to identifyattacker infrastructure. Doppel’s platform automates threat takedowns using AI and expert analysis, while its simulation product generates realistic, multi-step phishing scenarios to test and train employees across email, SMS, WhatsApp, Telegram, and more. Through its tools, Doppel enables proactive defense by disrupting malicious campaigns and building human resilience to modern, AI-driven attacks. | $70M / Series C / Nov 19, 2025 | |
Keycard
|
Keycard is on a mission to reimagine machine identity for the Internet, assisting developers in seamlessly connecting people, agents, and services across networks, clouds, and apps. | $8M / Seed / Oct 21, 2025 | |
Arcjet
|
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 | |
TENEX.AI
|
TENEX.AI is an automation-first security company designed for the AI-driven era. By leveraging cutting-edge artificial intelligence, TENEX.AI automates and enhances security measures to protect digital assets, networks, and data. Their solutions are built to address modern threats in real-time, providing proactive defense and rapid response. As thelandscape of cyber threats evolves, TENEX.AI ensures businesses stay one step ahead with intelligent, automated security solutions that minimize risks and maximize protection. | $27M / Series A / Sep 11, 2025 | |
Promptfoo
|
Promptfoo finds & fixes LLM vulnerabilities before they are shipped to production. Its founders launched and scaled AI at Discord to 200M users using new research techniques specific to AI vulnerabilities and red-teaming. Promptfoo is open-source and is the most widely adopted tool in this space, with over 25,000 users at companies likeShopify, Amazon, and Anthropic. | $18.4M / Series A / Jul 29, 2025 | |
|
Doppel
|
Doppel is an AI-native security platform that helps organizations defend against social engineering risks and digital impersonation. It continuously monitors threats across multiple channels, including domains, social media, paid advertising, messaging apps, and the dark web, then maps those threats into a real-time threat graph to identifyattacker infrastructure. Doppel’s platform automates threat takedowns using AI and expert analysis, while its simulation product generates realistic, multi-step phishing scenarios to test and train employees across email, SMS, WhatsApp, Telegram, and more. Through its tools, Doppel enables proactive defense by disrupting malicious campaigns and building human resilience to modern, AI-driven attacks. | $35M / Series B / May 02, 2025 | |
Adaptive Security
|
Adaptive Security is a computer network security company that focuses on deepfake attacks and provides cybersecurity services. | $55M / Series A / Apr 02, 2025 | |
|
TENEX.AI
|
TENEX.AI is an automation-first security company designed for the AI-driven era. By leveraging cutting-edge artificial intelligence, TENEX.AI automates and enhances security measures to protect digital assets, networks, and data. Their solutions are built to address modern threats in real-time, providing proactive defense and rapid response. As thelandscape of cyber threats evolves, TENEX.AI ensures businesses stay one step ahead with intelligent, automated security solutions that minimize risks and maximize protection. | Seed / Jan 20, 2025 | |
| See all 31 investments → | |||
Co-Investors
About Andreessen Horowitz
Andreessen Horowitz is a venture capital firm specializing in investing in seed, start-ups, early, mid-stage, growth, and late-stage. It prefers to invest in the social media business and technology sector with a focus on software, back-end infrastructure, the infrastructure of the Internet, cloud computing, enterprise software and services,consumer, business Internet, mobile-Internet, consumer Internet, cloud computing, data storage, social network browsers data-storage, consumer electronics, networking functions, software related biology, biotech, and medicine companies at the intersection of computer science and life sciences with a focus on digital therapeutics, cloud technology in biology, and computational medicine.
Andreessen Horowitz Contacts
| Name | Phone | Socials | |
|---|---|---|---|
Andrew Chen
General Partner
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Anish Acharya
General Partner
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David George
General Partner
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Emily Bennett
investing partner
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Gabriel Vasquez
Partner
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FAQ
What does Zane Lackey invest in?
Zane Lackey invests primarily in Cyber Security, Software and Security startups, most often at Seed and Series A stage. Most of the 31 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 Zane Lackey's check size?
Zane Lackey typically joins rounds of $2M–$8M at Seed, $8.5M–$75M at Series A and $30M–$40M at Series B. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Zane Lackey participates in.
How do I contact Zane Lackey?
Public channels for Zane Lackey 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 Zane Lackey last invest?
The most recent investment recorded for Zane Lackey closed in Jul 2026. Shizune tracks 31 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 Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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