ThreatSTOP is a privately held company. It is backed by 3 investors on record, including Andy Bechtolsheim and David Cheriton.

Where is ThreatSTOP headquartered?

ThreatSTOP is headquartered in Carlsbad, United States.

Who is the CEO of ThreatSTOP?

Tomás Byrnes is the CEO of ThreatSTOP.

Who founded ThreatSTOP?

Tomás Byrnes is a founder of ThreatSTOP, founded in 2009.

What products does ThreatSTOP sell?

ThreatSTOP sells ThreatSTOP Protective DNS and ThreatSTOP IP Defense.

ThreatSTOP

Network SecurityCarlsbad, United Statesfounded 2009privatethreatstop.com ↗

ThreatSTOP is a cybersecurity company specializing in Network Security, founded in 2009 and headquartered in Carlsbad, United States. It has raised $10.75M in equity across 1 priced round, employs about 19 people, and is privately held.

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updated Oct 11, 2026

Latest ThreatSTOP news and company activity

What ThreatSTOP did, dated — selected moves from the record, one per kind, newest first.

Feb 2026PartnershipDLTSolutions Partners with ThreatSTOP for Enhanced Cyber Network Activity
Nov 2025Product launchThreatSTOP Launches Partner Managed Rules for AWS Network Firewall
Aug 2025PartnershipThreatSTOP and DomainTools partner for real-time DNS protection
Dec 2015Exec change

ThreatSTOP Momentum score

26/ 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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ThreatSTOP products

ThreatSTOP funding

ThreatSTOP has raised $10.75M in priced equity. Its most recent round was a Series B in September 2015. 3 investors are on record, including Andy Bechtolsheim and David Cheriton.

Equity raised: $10.75M1 priced round
Last round: Series BSep 2015

View the complete funding history

ThreatSTOP employees and hiring

As of September 2026, ThreatSTOP has about 19 employees.

Employees: 19
30-day change: 0%
Open roles: 0

See hiring trends

ThreatSTOP competitors

Competitors of ThreatSTOP include Palo Alto Networks. The full competitive set, with overlap scoring, is in the platform.

Palo Alto Networks

ranked by CybersecTools comparison demand, 90 days

View the competitive set with overlap scores

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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security
Competitorsfull set, overlap scored
Leadershipevery exec, with roles
Customersnamed publicly, with sources
Reviews & newssentiment, coverage, cadence

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Funding, round by round, with the investors
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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

Similar in Network Security

Common questions about ThreatSTOP.

How much funding has ThreatSTOP raised?: ThreatSTOP has raised $10.75M in priced equity. Its most recent round was a Series B in September 2015. 3 investors are on record, including Andy Bechtolsheim and David Cheriton.
How many people work at ThreatSTOP?: As of September 2026, ThreatSTOP has about 19 employees.
Who owns ThreatSTOP?: ThreatSTOP is a privately held company. It is backed by 3 investors on record, including Andy Bechtolsheim and David Cheriton.
Where is ThreatSTOP headquartered?: ThreatSTOP is headquartered in Carlsbad, United States.
Who is the CEO of ThreatSTOP?: Tomás Byrnes is the CEO of ThreatSTOP.
Who founded ThreatSTOP?: Tomás Byrnes is a founder of ThreatSTOP, founded in 2009.
Who are ThreatSTOP's competitors?: Competitors of ThreatSTOP include Palo Alto Networks. The full competitive set, with overlap scoring, is in the platform.
What does ThreatSTOP do?: ThreatSTOP is a cybersecurity company specializing in Network Security, founded in 2009 and headquartered in Carlsbad, United States.