Sector portfolio · VC firm · United States
Greylock's Cybersecurity portfolio
Greylock has backed 19 Cybersecurity startups in rounds we track, $2.0B between them, shown by the stage each has reached. The best-funded is Upwind.
Funding by segment
- Series C and later$1.7B11
- Stage not reported$135M4
- Series A$38M2
- Series B$145M2
Where they are based
- United States18$2.0B
United StatesFounded
5 without a founding year on record.
Total raised
- Under $1M0
- $1M to $10M0
- $10M to $50M9
- $50M to $250M8
- $250M to $1B2
- $1B and over0
Each dot is a startup: the year it was founded across, the total it has raised up (each line is ten times the one below). Pick a segment to pick it out.
14 of 19 startups shown; the rest have no founding year or amount on record.
- 1 to 2
- 3 to 7
- 8 to 24
- 25 to 99
- 100 and more
- United States18
Startups by country, 1 country in all.
Segment by segment
Series C and later
11 startups · $1.7B raised
- UUpwindUnited States$750M
LookoutLookout, Inc.United States$282M
Obsidian SecurityObsidian Security is a cybersecurity company founded in 2017, specializing in comprehensive security solutions for SaaS and enterpUnited States$191M
CensysCensys provides an internet intelligence platform for threat hunting and exposure management.United States$93M
AgariAgari is a cloud-native email security platform based in Foster City, California.United States$85M
Skyhigh NetworksManage shadow IT and securely enable sanctioned IT with unparalleled cloud visibility, threat detection, and policy enforcement.United States$73M- ANAvi NetworksAvi Networks is a cloud application services platform that offers software load balancer, web application, and API security solutions.United States$60M
OpenDNSOpenDNS is a provider of Internet security and Domain Name System services for homes and businesses.United States$51M
Stage not reported
4 startups · $135M raised
DazzDazz delivers unified security remediation across code, clouds, infrastructure, and applications for security and development teams.United States$50M- DDecruDecru was a storage security company based in Redwood City, California, founded in 2001.United States$40M
- ASAwake SecurityUnited States$30M
KangarooKangaroo is a New York-based entertainment company that develops NFT-based storytelling video games.United States$15M
Series A
2 startups · $38M raised
Abnormal SecurityAbnormal Security is an email security company that protects enterprises and organizations from targeted email attacks.United States$24M
SqreenSqreen is a monitoring and protection platform made to be incredibly powerful yet very easy to use.United States$14M
Series B
2 startups · $145M raised
ApiiroApiiro is a cybersecurity company focused on protecting AI-driven development environments.United States$100M
Opal SecurityOpal Security is an AI-native access governance and identity security platform founded in 2020 and based in San Francisco, California.United States$45M
How this map is made. Every startup here works in Cybersecurity and has raised money in a round we track that names Greylock as an investor. Each sits under the stage of its latest round. Rebuilt nightly; updated 15 November 2026.
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