Quadrant Information Security has cleared DirJournal's 12-point manual editorial audit and is verified as an active Cybersecurity & Digital Defense entity. Last reviewed August 25, 2026.
Editorial Verification
200 OK StatusVerified
Primary website is live, secure (HTTPS), and free of malware.
Domain AgeVerified
Real-world domain age (≥1 yr, verified via the Wayback Machine) OR pre-migration legacy ID OR ≥2 years of platform tenure. Survival across multiple search-engine update cycles is itself a trust signal.
Schema ValidationVerified
Valid Organization / ProfessionalService JSON-LD emitted on every page load — checked at render time.
Citation ClarityVerified
Verified outbound links to at least two authoritative sources (social profiles, sameAs URLs).
Operational HistoryVerified
Minimum 12-month active history in the claimed industry — derived from the business's founding year, Wayback-verified domain age, or listing tenure (any one signal passes).
Entity RegistrationPending Manual Review
Cross-referenced with official state or country business registries.
Physical FootprintPending Manual Review
Verified non-virtual presence via Google Maps or official lease documentation.
Active LeadershipPending Manual Review
Confirmation of key team members and executive roles.
NAP ConsistencyPending Manual Review
Verified match of Name, Address, and Phone data across platforms.
Professional LicensingPending Manual Review
Verification of required industry-specific certifications or licenses.
Sentiment AuditPending Manual Review
Manual review of third-party reputation signals (BBB, Trustpilot, etc.).
Editorial DiscretionPending Manual Review
Final human review to ensure the business provides genuine value.
About
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 services rather than being replaced by Harbor's general IT staff. The structure keeps Quadrant's security operations function separate from Harbor's day-to-day managed IT delivery teams while giving clients access to additional cloud, infrastructure, compliance and application expertise. Independent cybersecurity industry records document Quadrant as founded in 2011 and headquartered in Jacksonville, Florida. Historical services included managed security, enterprise security consulting, managed firewall services and security-event monitoring built around the Sagan platform. Harbor's current integration page states that existing Quadrant clients can continue using the same cybersecurity team and service model without being required to move helpdesk or infrastructure operations to Harbor. The supplied quadrantsec.com domain now redirects to Harbor IT's Quadrant integration page, confirming the business transition.
Quadrant Information Security is a cybersecurity operation founded in Jacksonville, Florida in 2011 and now integrated into Harbor IT. The supplied quadrantsec.com domain redirects to Harbor's current integration page, which states that Quadrant's cybersecurity team remains active inside the larger organization. Existing clients continue to work with the same dedicated security operations personnel. Quadrant's current role within Harbor covers managed cybersecurity, threat detection, response, threat hunting and risk reduction. Harbor states that the Quadrant security operations function remains distinct from its managed IT delivery teams, preserving separation between security oversight and day-to-day helpdesk, infrastructure and application management. Clients can also access Harbor resources in cloud, compliance, applications and managed IT when needed. Independent TAG Cyber records from 2018 document Quadrant as a Jacksonville company founded in 2011. At that time, its services included managed security, enterprise security consulting, managed firewalls and security-event monitoring through the Sagan platform. The current Harbor structure preserves the specialized security team while placing it inside a broader national technology organization.
DirJournal's Perspective · System-Derived Authority
Quadrant Information Security is listed on DirJournal under Cybersecurity & Digital Defense in Jacksonville, Florida, United States.
Reviewed by DirJournal Editorial Board
Frequently Asked
| Feature | Destination |
|---|---|
| Managed Security Services | |
| Threat Detection | |
| Security Operations |
Knows About
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