# Andreessen Horowitz's Cybersecurity Investments: 21 Startups in Its Portfolio (2026) > The 21 Cybersecurity startups Andreessen Horowitz has backed, by stage: $4.8B raised between them. From the rounds we track; updated nightly. Source: https://millionrounds.com/portfolio-maps/andreessen-horowitz-cybersecurity-portfolio (Millionrounds; every figure on the page links to its filing or article) ## Series C and later 8 - [Tanium](https://millionrounds.com/company/tanium) - [Illumio](https://millionrounds.com/company/illumio) - [Lookout](https://millionrounds.com/company/lookout) - [Pindrop](https://millionrounds.com/company/pindrop) - [Signifyd](https://millionrounds.com/company/signifyd) - [SignalFx](https://millionrounds.com/company/signalfx) - [Material Security](https://millionrounds.com/company/material-security) - [*S* StoØk](https://millionrounds.com/company/stoik) ## Series B 6 - [Hadrian](https://millionrounds.com/company/hadrian) - [SentiLink](https://millionrounds.com/company/sentilink) - [CipherCloud](https://millionrounds.com/company/ciphercloud) - [Jumio](https://millionrounds.com/company/jumio) - [*VG* Very Good Security](https://millionrounds.com/company/very-good-security) - [Isovalent](https://millionrounds.com/company/isovalent) ## Series A 5 - [CYGNVS](https://millionrounds.com/company/cygnvs) - [Netography](https://millionrounds.com/company/netography) - [Keycard](https://millionrounds.com/company/keycard) - [Levels](https://millionrounds.com/company/levels) - [Arcjet](https://millionrounds.com/company/arcjet) ## Pre-seed and seed 2 - [*ML* Matter Labs](https://millionrounds.com/company/matter-labs) - [Crosswire](https://millionrounds.com/company/crosswire) ## Segment by segment ### Series C and later 8 startups · $2.1B raised - [**Tanium**](https://millionrounds.com/company/tanium) Tanium is a privately held company focused on Autonomous IT, specializing in cybersecurity and systems management. United States $577M - [**Illumio**](https://millionrounds.com/company/illumio) Illumio is a cybersecurity company based in Sunnyvale, California, specializing in breach containment and Zero Trust segmentation. United States $558M - [**Lookout**](https://millionrounds.com/company/lookout) Lookout, Inc. United States $282M - [**Pindrop**](https://millionrounds.com/company/pindrop) Pindrop is an American cybersecurity company founded in 2011, headquartered in Atlanta, Georgia, with additional offices in London United States $237M - [**Signifyd**](https://millionrounds.com/company/signifyd) Signifyd is a technology company based in San Jose, California, founded in 2011. United States $186M - [**SignalFx**](https://millionrounds.com/company/signalfx) SignalFx is a cloud monitoring platform for infrastructure, microservices, and applications. United States $149M - [**Material Security**](https://millionrounds.com/company/material-security) Material Security is an enterprise cybersecurity company that specializes in email security and protection for cloud-based workspaces. United States $100M - [*S* **StoØk**](https://millionrounds.com/company/stoik) France $51M ### Series B 6 startups · $2.5B raised - [**Hadrian**](https://millionrounds.com/company/hadrian) Hadrian is a machine parts startup that manufactures precision components for technology companies. United States $2.2B - [**SentiLink**](https://millionrounds.com/company/sentilink) SentiLink is a technology company based in San Francisco, founded in 2017 by Naftali Harris and Max Blumenfeld. United States $84M - [**CipherCloud**](https://millionrounds.com/company/ciphercloud) CipherCloud is a cloud security company that provides a platform that delivers data protection, compliance, and control. United States $80M - [**Jumio**](https://millionrounds.com/company/jumio) Jumio is an AI platform that enables users to establish their identity remotely to protect against fraud and other financial crime. United States $52M - [*VG* **Very Good Security**](https://millionrounds.com/company/very-good-security) United States $44M - [**Isovalent**](https://millionrounds.com/company/isovalent) Isovalent builds open-source networking, service mesh, security, and observability software for modern cloud-native infrastructure United States $40M ### Series A 5 startups · $151M raised - [**CYGNVS**](https://millionrounds.com/company/cygnvs) CYGNVS is a Silicon Valley-based SaaS cybersecurity company founded in 2020 by Arvind Parthasarathi. United States $55M - [**Netography**](https://millionrounds.com/company/netography) Cloud-Native Network Defense Platform for All Your Cloud and On-Prem Traffic United States $48M - [**Keycard**](https://millionrounds.com/company/keycard) Keycard is working to redefine machine identity for the Internet. United States $30M - [**Levels**](https://millionrounds.com/company/levels) Levels is a nightclub for music, dance, and birthday party celebrations. United States $10M - [**Arcjet**](https://millionrounds.com/company/arcjet) Arcjet is a software company based in San Francisco that specializes in security tooling for AI agents and web applications. United States $8.5M ### Pre-seed and seed 2 startups · $58M raised - [*ML* **Matter Labs**](https://millionrounds.com/company/matter-labs) Germany $52M - [**Crosswire**](https://millionrounds.com/company/crosswire) Crosswire is a New York-based company specializing in enterprise security and identity management. United States $6.0M **How this map is made.** Every startup here works in Cybersecurity and has raised money in a round we track that names Andreessen Horowitz as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026. ## More portfolio maps [All portfolios](https://millionrounds.com/portfolio-maps) [Sector portfolio **Andreessen Horowitz's AI portfolio** 259 startups · $426B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-ai-portfolio)[Sector portfolio **Andreessen Horowitz's Fintech portfolio** 90 startups · $24B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-fintech-portfolio)[Sector portfolio **Andreessen Horowitz's Web3 & Crypto portfolio** 63 startups · $7.9B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-web3-crypto-portfolio)[Sector portfolio **Andreessen Horowitz's IT Services portfolio** 44 startups · $1.4B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-it-services-portfolio)[Sector portfolio **Andreessen Horowitz's Big Data & Analytics portfolio** 42 startups · $3.1B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-big-data-analytics-portfolio)[Sector portfolio **Andreessen Horowitz's Biotech portfolio** 36 startups · $6.3B](https://millionrounds.com/portfolio-maps/andreessen-horowitz-biotech-portfolio) ## Raising from investors like Andreessen Horowitz? 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