Cybersecurity Companies

Categories · Certification

CISSP

Firms that list CISSP holders. As listed — we do not invigilate exams.

7 companies. Search a country or city. Tick features, then apply once. Organic order is not for sale.

Indexorganic · newest first
CompanyWhat they sellFocus / ratingStatus

Atlant Security

Sofia, BG · Consultancy / pentest

Founder-led pentest, vCISO, and compliance consulting.

GRC · Application security

SANS Institute

Bethesda, US · Training

Cybersecurity training, certifications, and research.

Human risk · Security operations

NCC Group

Manchester, GB · Consultancy / pentest

Global pentest, research, and cyber resilience consultancy.

Application security · Security operations

Bishop Fox

Phoenix, US · Consultancy / pentest

Offensive security consultancy and Cosmos continuous pentest.

Application security · Security operations

Microsoft Security

Redmond, US · Product vendor

Defender, Entra, Sentinel, and Purview across the Microsoft estate.

Endpoint security · Identity

Cisco Security

San Jose, US · Product vendor

Network, email, and SASE security from the campus to the cloud.

Network security · Email & messaging

Mandiant

Reston, US · Consultancy / pentest

Incident response, threat intel, and Mandiant Advantage — now Google Cloud.

Security operations · Threat & vulnerability
FAQ
What does CISSP mean on this index?

Companies that list CISSP. Company attestations (ISO 27001, SOC 2) are held by the firm. Practitioner credentials (OSCP, GPEN) are held by people on staff. We do not audit certificates or invigilate exams.

Is the order paid?

No. Organic order is recency. Promoted shelves are labeled and separate. That is the opposite of buying a rank.

How do I get listed under CISSP?

Submit a company and tick the certifications you actually hold. We review before anything is public. Paid plans buy a labeled shelf, not a silent bump in this list.

Why is a staff exam on a company directory?

Buyers shortlist pentest and training firms by who sits on the engagement. OSCP and GPEN are company filters here, not a people directory.