Cybersecurity & Digital Defense

Stellar Technologies is a Phoenix cloud and infrastructure provider built for organizations that need computing, connectivity and data protection without operating every layer themselves. Its distinguishing value is the combination of hosted infrastructure, recovery and security-oriented services under one technical…

Quadrant Information Security is a Jacksonville-founded cybersecurity operation that is now part of Harbor IT, a national managed IT and cybersecurity provider. Harbor states that Quadrant's existing cybersecurity team continues to deliver managed security, detection, response, threat hunting and risk-reduction…

MainNerve is a Colorado Springs cybersecurity company providing penetration testing, security assessments and compliance-focused security services. The company states that it has served organizations since 2001 and reports working with more than 2,200 companies over its operating history. Current services include…

LeeShanok Network Solutions is an Arizona managed IT and cybersecurity company operating from offices in Tucson and Phoenix. The company has provided business IT services since 1997 and supports organizations with managed technology, security, cloud, communications and compliance requirements. Its services include…

Excellent Networks is an El Paso, Texas IT services company founded in 2007 by Mark Luna. The company provides managed IT services, cybersecurity, cloud solutions, IT consulting, VoIP and website development for businesses in El Paso and Las Cruces. Its managed services include proactive monitoring, technical support…

Cipher is a cybersecurity company founded in 2000 by Eduardo Bouças and later integrated into Prosegur's global cybersecurity business. Prosegur's official acquisition records describe Cipher as a provider of managed security services and security consulting with operations in the United States, Brazil and the United…

Certes is a Pittsburgh cybersecurity company founded in 2000, delivering Data Protection Risk Mitigation to secure data across networks in nearly 100 countries.

Zimperium is a mobile security company founded in 2010 and headquartered in Dallas, Texas. The company provides security for mobile applications and devices, using AI-driven and on-device protection against mobile phishing, malware, app vulnerabilities, device compromise and zero-day threats. Its product portfolio…

WatchGuard Technologies is a Seattle cybersecurity company founded in 1996 and led by CEO Joe Smolarski. Its platform combines network security, endpoint protection, multi-factor authentication and secure Wi-Fi, with a business model built substantially around managed service providers that deliver WatchGuard security…

Trustwave is a global cybersecurity company headquartered in downtown Chicago, founded in 1995, offering managed detection and response, penetration testing and database security.

Red Mesa is a Mesa cybersecurity consulting firm founded in 2015, delivering security assessments and consulting services to Arizona businesses.

Petronella Technology Group is a Raleigh cybersecurity and compliance firm founded in 2002 by Craig Petronella, specializing in CMMC, HIPAA and NIST compliance for regulated businesses.

OpenDNS is the predecessor to Cisco Umbrella, a cloud-delivered security service centered on DNS and enterprise network protection. OpenDNS developed a cloud platform that provided threat protection and security enforcement for devices connecting to internet resources. Cisco announced plans to acquire the San…

Finite State is a Columbus, Ohio cybersecurity company founded in 2017 by Matt Wyckhouse, who currently serves as Founder and CEO. The company develops product-security software for manufacturers and organizations responsible for connected devices, embedded systems and software supply chains. Its platform analyzes…

Cybereason is a cybersecurity platform founded in 2012 by Lior Div, Yossi Naar and Yonatan Striem-Amit and acquired by LevelBlue in November 2025. Its endpoint security, XDR, threat intelligence and incident-response technology now complements LevelBlue's managed detection and response services rather than operating…

ZeroFox is a Baltimore external-cybersecurity company focused on threats that appear beyond an organization's internal network. Its distinctive role is monitoring and disrupting impersonation, fraudulent domains, social-media abuse and dark-web activity that conventional endpoint and network tools may not see.

ThreatLocker is an Orlando-area cybersecurity company founded in 2017 by Danny Jenkins, Sami Jenkins and John Carolan. Danny Jenkins serves as CEO, Sami Jenkins as COO, and Carolan as Chief Quality Assurance and Co-Founder. The company develops a Zero Trust security platform built around a deny-by-default model that…

Red Canary is a cybersecurity company whose founders began building the business in 2013 after leaving the intelligence community and working with organizations responding to breaches. Brian Beyer is currently identified as Co-Founder and Chief Executive Officer. The company provides managed detection and response…

Pondurance is an Indianapolis cybersecurity firm delivering managed detection and response, incident response and vulnerability management for healthcare, education, manufacturing and retail clients.

Phosphorus Cybersecurity is a global IoT security company headquartered in Nashville's Gulch neighborhood, automating remediation of the biggest xIoT vulnerabilities.

iovation is a Portland device-based fraud prevention and authentication company founded in 2004 by Greg Pierson, now operating as TransUnion IDVision with iovation.

Intrust IT is a Cincinnati managed-technology company founded in 1992 by Tim Rettig and now owned entirely by employees through an ESOP structure. Its differentiator is combining long-running managed IT and cybersecurity operations with employee ownership intended to support staff continuity and long client…

Intech Hawaii is a Honolulu cybersecurity and managed services firm founded in 1991, specializing in network design, compliance and multi-site network security for Hawaii businesses.

Identify Security is a Milwaukee cybersecurity talent and consulting firm founded in 2005, providing penetration testing, MDR and CISO advisory services to Fortune 2000 companies.

Cyber Guards is a Combat Disabled Veteran and Minority-Owned Memphis cybersecurity firm delivering managed security services and network security consulting nationwide.

Breadcrumb Cybersecurity is a Fresno cybersecurity firm founded in 2015, specializing in penetration testing, digital forensics and incident response for Central Valley businesses.

BitSight is a Boston cybersecurity company founded in 2011, providing security performance monitoring and risk management ratings used by banks and insurers worldwide.

Alias Cybersecurity is an Oklahoma City cybersecurity and digital forensics firm founded in 2010, specializing in incident response, penetration testing and breach investigation.

West Advanced Technologies, Inc., known as WATI, is a California-headquartered technology and cybersecurity company operating since 1998. The company began by providing information technology services to the County of Los Angeles and now serves state and local government agencies, technology companies and commercial…

Uprite Services is a Houston managed IT and cybersecurity provider serving small and mid-sized businesses across Texas. The company provides managed IT support, cybersecurity, cloud solutions, disaster recovery, business continuity and strategic technology services. Uprite says it supports businesses in Houston, San…

TRNSFRM is a Cleveland and Columbus cybersecurity, compliance and managed IT firm founded in 2008 by Jeff Dennis, serving manufacturers, construction firms and healthcare organizations.

SpearTip is a St. Louis cyber counterintelligence firm founded in 2005, protecting clients against cyber threats through proactive and reactive incident response services.

Security Risk Advisors is a Philadelphia cybersecurity consulting firm founded in 2010, delivering red, blue and purple teaming alongside proprietary threat resilience platforms.

Securin is an Albuquerque cybersecurity company founded in 2020, providing attack surface management, vulnerability intelligence and adversarial exposure validation.

SecureSky is an Omaha cloud security management company delivering continuous monitoring and threat detection for organizations moving workloads to the cloud.

Resecurity is a Los Angeles cybersecurity company centered on intelligence about threats that develop outside an organization's own infrastructure. Its differentiator is combining cyber threat intelligence with digital-risk, identity and fraud monitoring, allowing security teams to track adversaries, leaked data and…

ReliaQuest is a Tampa cybersecurity technology company founded in 2007 by Brian Murphy, who continues to serve as Founder and CEO. The company's GreyMatter platform supports security operations across complex enterprise technology environments and now incorporates agentic AI for detection, investigation, threat…

gTECHserv is a Charlotte managed IT and cybersecurity company founded in 2000 by Brian Goddard, providing network security, VoIP and technology consulting to regional businesses.

Fishtech Group is a Kansas City data-driven cybersecurity solutions provider founded in 2015, operating the CYDERES managed detection and response service.

Eccalon is an AI and cybersecurity firm establishing its corporate headquarters in Detroit, a defense industry specialist with Pentagon contracts creating up to 800 new jobs.

EC-Council is a cybersecurity certification and training company headquartered in Albuquerque, founded in 2001 by Jay Bavisi, best known for its Certified Ethical Hacker credential.

CNF Technologies is a San Antonio, Texas cybersecurity company founded in 2005 by Fred Ramirez. The company develops and operates full-spectrum cyber capabilities for national defense and critical infrastructure missions. Its work covers offensive and defensive cyber operations, cybersecurity risk management, cyber…

UNS Inc. is a Minneapolis cybersecurity consulting company founded in 1997 by Matt Haney, who remains Founder and CEO. The firm combines managed security with professional services, risk and compliance work and CMMC support, and distinguishes itself through security engagements delivered across more than 40 countries.

The Oxman Group is the former name of the Fort Worth security business that now operates as Total 360 Security. The company's current history states that it began providing security services to Fort Worth businesses in 2013 as The Oxman Group and later expanded its scope and identity. Don Oxman is identified as…

Louisville Geek is a Louisville IT and cybersecurity firm founded in 2004, delivering infrastructure support, website design and SOC 2-certified security services.

CyberClan is a Las Vegas cybersecurity firm specializing in incident response, breach response and ransomware recovery for government, aerospace and mining clients nationwide.

Fortinet is a multinational cybersecurity company founded in 2000 by brothers Ken Xie and Michael Xie, headquartered in Sunnyvale, California. Fortinet develops the FortiGate next-generation firewall (the most deployed network firewall globally), FortiSASE, FortiEDR, and the Fortinet Security Fabric integrating over…

Palo Alto Networks is the world's largest cybersecurity company by market capitalisation, founded in 2005 by Nir Zuk and headquartered in Santa Clara, California. The company provides next-generation firewalls, cloud security (Prisma Cloud), SOC automation (Cortex XSIAM), and zero trust network access. Palo Alto…