What products does Castle sell?

Castle sells Castle Device Intelligence.

Castle

Application SecuritySan Francisco, United Statesfounded 2015private

Castle is a cybersecurity company specializing in Application Security, founded in 2015 and headquartered in San Francisco, United States. It has raised $11.56M in equity across 5 priced rounds, employs about 51 people, and is privately held.

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updated Sep 12, 2026

Castle Momentum score

21/ 100

Mandos Momentum blends hiring, funding, traffic and sentiment into one score out of 100. The score is free; the pillars behind it unlock in the platform.

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Castle products

Castle Device IntelligenceDevice fingerprinting and intelligence for account security and fraud detectionDetails ↗

Castle funding

Castle has raised $11.56M in priced equity. Its most recent round was a Venture Round in January 2021.

Equity raised: $11.56M5 priced rounds
Last round: Venture RoundJan 2021

View the complete funding history

Castle employees and hiring

Castle has about 51 employees, up 2% over the last 30 days, with 1 open roles.

Employees: 51
30-day change: +2%
Open roles: 1

See hiring trends

Castle competitors

Security professionals most often compare Castle against Imperva, MirrorTab, and ExtraHop on cybersectools.com. The full competitive set, with overlap scoring, is in the platform.

by search demand for comparison pages on cybersectools.com, 90 days

View the competitive set with overlap scores

The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobs1 live postings, role mix
Tech stackframeworks, clouds, security

Similar in Application Security

Common questions about Castle.

How much funding has Castle raised?: Castle has raised $11.56M in priced equity. Its most recent round was a Venture Round in January 2021.
How many people work at Castle?: Castle has about 51 employees, up 2% over the last 30 days, with 1 open roles.
Who are Castle's competitors?: Security professionals most often compare Castle against Imperva, MirrorTab, and ExtraHop on cybersectools.com. The full competitive set, with overlap scoring, is in the platform.
What does Castle do?: Castle is a cybersecurity company specializing in Application Security, founded in 2015 and headquartered in San Francisco, United States.
What products does Castle sell?: Castle sells Castle Device Intelligence.