About Us

ThreatSTOP is About Taking Action

ThreatSTOP’s founder, Tom Byrnes, created the company in 2009 with a distinct mission and vision…why can’t smaller companies get the same cybersecurity solutions that Fortune 1000 companies can have? Was there a way to deliver security to customers that automated tedious processes and augmented the capabilities of companies with limited IT and Security staffing and resources?

This was especially of threat intelligence. Conceptually, anyone could get access to any number of feeds, but few companies had the resources to curate the feeds and turn that data into machine readable enforcement policies. An even smaller percentage of organizations had the manpower to update all of their network devices with their updated policies (and even then, the threat was usually outdated). Worse still, there were no reporting tools that adequately captured the log data specific to blocked and redirected connections and visualized them in the way companies need. From this perfect storm of vulnerability came ThreatSTOP.

A Threat Intelligence Platform That Delivers

ThreatSTOP evolved into what is it today, a cloud-based automated threat intelligence platform that converts the latest threat data into enforcement policies, and automatically updates your firewalls, routers, DNS servers and endpoints to stop attacks before they become breaches.

The ThreatSTOP platform blocks unwanted traffic and attacks by preventing connections, both inbound and outbound, with threat actors. This approach enables ThreatSTOP to neutralize a broad range of threats and malware including ransomware, DDoS, Angler Kits, phishing and botnets.

Powerful Threat Intelligence DNA

ThreatSTOP leverages the company’s comprehensive and authoritative database of IP addresses, domains and the network infrastructure used in cyberattacks to develop best-in-class threat intelligence. Our world-class security team curates the latest threat information from more than 50 public and proprietary sources including trust groups and law enforcement, and dynamically updates your policy as the threat landscape changes.

Threat data collected is cross-correlated between sources to provide a high level of confidence in the threat data curated and ensures a high degree of accuracy to prevent false positives. Our threat data is further enhanced with a feedback loop from customer logs proving our security team with up-to-the-minute access to IOCs for new and emerging threats.

Part of the Cyber Community

At ThreatSTOP, we are first and foremost a member of the larger security community seeking to protect the Internet. To give back, we provide any and all qualified community members access to a set of free security assessment tools, including a free community account. To date we have over 4,000 free community accounts.

World-class Leadership

The ThreatSTOP executive team has more than 120 years’ combined experience in security and network product development and research.

  • The company was started in 2009 by Founder and CTO Tom Byrnes, a long-standing member of the global cybersecurity community.
  • Early work was based on research work with operationalizing the Internet Storm Center's DShield project.
  • The company’s Chief Scientist, Paul Mockapetris is the inventor of the domain name system (DNS).
  • ThreatSTOP’s CEO, Tom Bennett, is a 26 year startup veteran, former incubator VC, and serves on the boards of several high-profile cybersecurity companies.


ThreatSTOP has assembled a core management team of seasoned veterans from the security, Internet and data communications industries.

Tom Bennette

Tom Bennett

President and CEO

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Tom Bennett is a 26 year veteran startup entrepreneur with a track record of taking disruptive, venture-backed startups from concept to market leadership. Tom has previously held high Department of Defense security clearance and has worked with multiple agencies on national cybersecurity defense issues. Tom has also worked for multiple incubator venture groups and is a mentor to several startup CEOs. He also serves on the board of directors for ICS cybersecurity startup Dragos, and was previously on the board of directors for Cylance and Cybersponse, also serving as Executive Chairman for Veracity Industrial Networks. He holds an MBA from Stanford Graduate School of Business.

Tom is also Co-Founder of outdoor tools company DMOS Collective, works ski patrol at Park City Mountain, and has completed 2.75 Molokai2Oahu paddleboard races (ask him about sea turtle collisions).


Tomás Byrnes

Tomás Byrnes

Founder and CTO

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Tom Byrnes is a long-standing member of the global cybersecurity community, serving in the U.S. Army for 13 years and ultimately joining the seminal tactical networking group.  In the private sector Toms work started with designing large-scale global networks, and providing technical advice and leadership for a number of successful startups that all resulted in successful acquisitions. Tom holds two patents in network security using DNS, and is credited as the inventor on two additional patent applications. An active member of the IEEE, ISSA and Infragard, Byrnes speaks regularly at conferences on the topic of security.

Ever the adventurer, Tom is an off-road racing enthusiast and was part of the JCR/Honda team that won seven Baja 1000 races in a row from 2007 to 2014. When not on the road securing the world or seeking the unknown, Byrnes lives in North San Diego County with his wife, two sons, and their rescue dog.


Paul Mockapetris

Paul Mockapetris

Chief Scientist

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Mockapetris is the inventor of the Domain Name System (DNS). His mission is to help guide DNS and IP addressing to the next stage. His earliest work at UC Irvine on distributed systems and LAN technology preceded the commercial Ethernet and Token Ring designs. At ISI, after working on the design and initial implementation of the SMTP protocol for email as part of the birth of the Internet in 1983, he took on the challenge of designing DNS, and then operated the original “root servers” for all Internet names.

When not inventing new ways for the internet to communicate, Paul enjoys tennis and wine, sometimes both together.


Nicko Dehaine

Nicko Dehaine

Vice President, Engineering

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Nicko has over 18 years of diverse experience in engineering management, software development, internet application development, and computer networking. He has particular expertise in Unix and TCP/IP, web applications, cloud computing, and platform/software as a service (PaaS/SaaS). Before joining ThreatStop, Nicko was Vice-President of Engineering at Phone.com and Director of Software Development at Bridgepoint Education, and St. Bernard Software/Edgewave. He holds a M.S. in Computer Science from EPITA (Paris, France).

When not coding or hiking with his family, Nicko is a heavy metal roadie, attending over 90 Iron Maiden shows (and singing backup vocals on a few).


Steve Wallace

Steve Wallace

Vice President, Customer Experience

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Steve Wallace is an entrepreneurial technologist with 30 years of hands-on experience in data security, network design, technical operations, and cloud computing. Prior to joining ThreatSTOP, Wallace was the CTO of AIS Data Centers. He previously held senior technology leadership roles including CTO, ComplexDrive Data Centers, CTO, cari.net, and founder and VP of Engineering, American Digital Network. Wallace served in the U.S. Navy and holds a BSc in Computer Engineering from CSU Long Beach. Wallace is currently an Advisory Board Member for CyberHive - CyberTECH, and a Security SIG Co-Chair for CommNexus.


Joe Dahlquist

Joe Dahquist

Vice President, Product Management

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Joe Dahlquist is a creative and entrepreneurial product expert with over 15 years of hands-on experience in new product development and product management roles. Joe’s product experience spans international hardware, software, and professional services industries. Prior to joining ThreatSTOP, Joe was an innovation driver for companies in the consumer electronics, financial services, and access control markets with category-leaders such as Chamberlain and Rockford Corporation. Joe has brought more than 800 successful products to market, from concept to completion, by identifying and solving customer challenges with timely and compelling products.

Joe is a technologist and a board-sports enthusiast who loves outdoor adventures in the mountains and oceans of southern California.


Irena Damsky

Senior Director, Security Research

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As Senior Director, Security Research for ThreatSTOP, Irena is responsible for establishing and managing a team of researchers and analysts to find, understand and publish information about active threats that is then used to protect ThreatSTOP customers and shared with the InfoSec community at large. Prior to joining ThreatSTOP, Irena was the Threat Intelligence Team Leader for Check Point Software. Irena is a Captain in Reserve with the Israeli Intelligence Forces where she served for more than six years as a security researcher, developer and team leader. She is a frequent speaker at security events such as M3AAWG and Shmoocon and holds a BSc in Computer Science from Tel Aviv University (TAU) and an MSc in Computer Science from The Interdisciplinary Center Herzliya (IDC).

Irena is fluent in English, Russian and Hebrew, and likes games, baking and fluffy things.

Board of Directors

Tomás Byrnes

Founder and CEO
 Tom has held a variety of engineering, sales and support leadership positions in both private industry and the military, including: US Army Signal Corps, Radware and Datatech. In the mid 1990s, he was CTO of an ISP and e-commerce hosting company ADNC.com. In the early 2000s, he was Senior VP of Technology at Zero Gravity Internet Group, a venture capital fund that provided the initial financing to Oingo, which you know today as Google Adwords/Adsense. Tom has been involved in the Internet and related technologies since he first logged on to ESANET in 1981.


David Ehrlich

A successful Silicon Valley executive, having held a wide range of executive roles in technology companies of various stages and sizes, and having served as a Director on a number of technology company Boards. His focus is helping companies work through product-market strategy, business model, and go-to-market challenges, as well as working with executive teams on models of leadership, communication, and culture. Currently, David is the CEO of Aktana Inc., a pioneer in decision-support for field sales teams in the life sciences industry. Prior to Aktana, David worked with Mohr Davidow Ventures as an Executive in Residence. From early 2007 to early 2010, David was the CEO of ParAccel, a leader in analytic database systems. From 2003 through 2006 he worked as NetIQ Corp., where he was the Senior Vice President, Marketing and Chief Strategy Officer.


Tom Bennett

A founder and senior executive in seven startup technology companies, Tom Bennett is a seasoned entrepreneur and proven technology executive, with a strong track in developing companies into market leadership positions. Over two decades, Tom has launched several new companies, brought eight pioneering new technology solutions to market, and managed 30+ products through the technology life cycle. He has raised more than $80M in venture capital and been a guiding hand towards successful exits totaling $463M. An acknowledged cybersecurity domain expert, Tom currently holds a high Department of Defense security clearance.


Joel Evanier

Formerly CEO, EVP of Business Development & Strategy at RedSeal Systems. Mr Evanier - A 30 year veteran of Sales, Business Development and Consulting for startups, as well as Sun and Cisco Systems. Early stage Strategic Business Consulting, including business plan & sales strategy development, revenue & channels strategy, messaging, and fund raising.


Sean Hafeez

A 20 year veteran of the tech industry, including a number of successful startups. Starting with the first tech boom in the 1990s (Telocity, Shasta) Sean has held a number of key technical leadership roles. He was an early employee at Arista Networks and was responsible for the competitive positioning of the products along with the establishment and success of Arista’s Asia Pacific team. Most recently Sean was Director of Sales for APAC at Big Switch Networks. Currently he is is part of a startup working with industry heavyweights to deliver a disruptive product in the data center infrastructure space.


Winn Schwartau

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Winn Schwartau is one of the world's top experts and authors on security, privacy, infowar and cyber-terrorism.


Johannes Ullrich

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As Chief Research Officer for the SANS Institute, Johannes is currently responsible for the SANS Internet Storm Center (ISC) and the GIAC Gold program.


Sean Hafeez

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Organizer Of 1's & 0's at a well funded stealth startup.


Marcus Sachs

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Senior executive with over 30 years of professional leadership experience in national, homeland, and cyber security.


Brian Nugent

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Founding principal and General Partner in Accelerate-IT Ventures (AITV), and Chairman of Accelerate-IT Advisors (AITA).

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