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ThreatSTOP
Carlsbad, US · Founded 2009 · Delaware corporation
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ThreatSTOP provides a protective DNS security service that blocks malicious DNS resolution requests and IP connection attempts using 600+ threat categories, protecting networks from phishing, ransomware, malware, and unwanted traffic. It integrates with DNS servers, firewalls, routers, and cloud infrastructure and serves education, healthcare, enterprise, SMBs, service providers, and managed service providers.
Founders & leadership
ThreatSTOP was founded in 2009 by TOMAS L. BYRNES.
TL
TOMAS L. BYRNESCEO and FounderTomas L. Byrnes is an executive with over 25 years of experience in technical leadership, network infrastructure design, and company building; he has held executive and director roles at multiple companies and has been involved in ventures that created over $600 million in enterprise value.
KB
KAREN BYRNESFinancial Planning and Analysis Consultant2009–2021Karen Byrnes is an executive officer at ThreatSTOP with over 25 years of experience in accounting and finance at technology startups, including involvement in equity and debt funding rounds, M&A transactions, and financial reporting to boards and investors.
Board
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SEAN HAFEEZBoard director
JE
JOEL EVANIERBoard director
TB
THOMAS BENNETTBoard director
DE
DAVID EHRLICHBoard director
Reported raises · per SEC filings
Form D private placements$4.8M disclosed across 1 round · 2015
▶$4.8MraisedOct 2015 · 6 investors · OtherRule 506(b)
▶$4.8MraisedOct 2015 · 6 investors · Other
Rule 506(b)Officers, directors & promoters on the filing
- SEAN HAFEEZDirector
- TOMAS L. BYRNESExecutive Officer, Director
- JOEL EVANIERDirector
- THOMAS BENNETTDirector
- KAREN BYRNESExecutive Officer
- DAVID EHRLICHDirector
- Offering amount
- $4.8M
- Amount sold
- $4.8M
- First sale
- Feb 2015
- Incorporated
- Corporation, Delaware
- Federal exemptions
- 06b
Source: SEC EDGAR Form D. Amounts as filed; amended filings shown once at their latest values.
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Companies working in the same space as ThreatSTOP.
Non-dilutive funding · 1 SBIR/STTR award
Federal grants — no equity taken| Agency | Phase | Year | Amount |
|---|---|---|---|
| Department of Homeland Security | Phase I | 2010 | $91.5K |
Source: SBIR.gov award data (U.S. Small Business Administration). SBIR/STTR awards are competitive federal R&D grants and contracts — non-dilutive capital alongside any venture rounds above.
In the news
Frequently asked questions
- What does ThreatSTOP do?
- ThreatSTOP provides a protective DNS security service that blocks malicious DNS resolution requests and IP connection attempts using 600+ threat categories, protecting networks from phishing, ransomware, malware, and unwanted traffic. It integrates with DNS servers, firewalls, routers, and cloud infrastructure and serves education, healthcare, enterprise, SMBs, service providers, and managed service providers.
- Who founded ThreatSTOP?
- ThreatSTOP was founded by TOMAS L. BYRNES in 2009.
- How much funding has ThreatSTOP raised?
- ThreatSTOP has disclosed $4.8M raised across 1 round.
- Where is ThreatSTOP headquartered?
- ThreatSTOP is headquartered in Carlsbad, US.