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Cybersecurity service providers are the firms you bring in when you need hands and expertise rather than another tool: managed detection and response, penetration testing, vCISO and advisory, incident response, and compliance work. For teams that cannot hire fast enough, the right partner is often the difference between a control on paper and one that actually runs. The hard part is matching scope, specialization, and trust.
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IT security & compliance services for financial institutions & healthcare orgs
Cybersecurity & compliance consulting firm offering GRC, vCISO, and IR services
ISO certification audit support and compliance consulting services
Cybersecurity & compliance professional services firm offering audits and assessments.
Cybersecurity & compliance consulting firm offering advisory and pen testing services.
Third-party assessor for HITRUST, SOC 2, ISO, FedRAMP & compliance frameworks
Enterprise cybersecurity consulting firm in India specializing in GRC services
MSSP providing managed cybersecurity and compliance services via 24/7 SOCs
Cybersecurity services firm specializing in compliance, pentesting & consulting
Multi-service contractor providing cybersecurity, IT, and facility services
Family-owned firm providing cybersecurity & compliance services to SMBs
Cloud security & compliance automation platform for FedRAMP, PCI, CMMC, HIPAA.
Cybersecurity risk & compliance consulting for federal agencies & enterprises
Atlanta CPA firm offering IT audit, attestation, and outsourced compliance services.
Cyber insurance provider with integrated security advisory services
IT services firm offering app dev, QA testing, and cybersecurity consulting
Managed IT and cybersecurity services for regulated industries, focused on compliance.
Global cybersecurity and compliance firm specializing in GRC and attestation
BDO is an accounting and advisory firm offering assurance, tax, and GRC services.
Security and compliance automation platform for AI-driven tech startups.
Specialty insurer providing cyber insurance and risk coverage products
Dutch cybersecurity consultancy helping critical industries with GRC and resilience.
German firm offering outsourced CISO services, compliance, and security programs.
Fractional CISO & TPRM consulting for growing organizations
The 144 providers in this directory span six service categories. Each type has different strengths, pricing, and ideal customer fit. Use the cards below to match your need to the right service.
Managed Security Service Providers
Outsourced security operations: SIEM monitoring, firewall management, vulnerability scanning, basic threat response.
Managed Detection & Response
24/7 SOC analysts actively hunting threats and executing response actions, on the provider's tech stack.
Penetration Testing Companies
Simulated attacks to find vulnerabilities before real adversaries do, scoped to your assets.
Virtual / Fractional CISO
Fractional senior security leadership, typically 1–4 days/month, for strategy without a full-time hire.
IR Firms & Retainers
Specialists you engage when an attack is in progress, often pre-contracted via retainers for response-time SLAs.
GRC & Compliance Consultants
Design, implement, and maintain controls for SOC 2, ISO 27001, HIPAA, PCI DSS, FedRAMP, NIST CSF.
Match the service to the need
Common questions about finding cybersecurity service providers.
The directory includes 144 service providers across Managed Security Service Providers (MSSPs), Managed Detection and Response (MDR) firms, penetration testing companies, virtual CISO (vCISO) services, incident response teams, and compliance consultants covering SOC 2, ISO 27001, HIPAA, and PCI DSS.
An MSSP (Managed Security Service Provider) typically offers broad outsourced security operations including SIEM monitoring, firewall management, and compliance support. An MDR (Managed Detection and Response) provider specializes in 24/7 threat detection and active incident response, often with their own technology stack. MDR is more focused on detecting and stopping attacks; MSSPs offer wider but sometimes shallower coverage.
A virtual CISO (vCISO) is ideal for organizations that need senior security leadership but cannot justify a full-time hire. Common scenarios: companies under 500 employees, organizations preparing for SOC 2 or ISO 27001, businesses scaling rapidly, and teams needing board-level security reporting. A full-time CISO typically makes sense at 500+ employees or in highly regulated industries.
Penetration testing costs vary widely based on scope. Web application pen tests typically range from $5,000 to $25,000. Network pen tests range from $10,000 to $50,000+. Red team engagements can exceed $100,000. Pricing depends on attack surface size, depth (black box, gray box, white box), and reporting requirements. Always request scoped quotes from at least 3 providers.
Evaluate on five criteria: (1) Specialization match — MSSP, MDR, pentest, vCISO, IR, or compliance; (2) Certifications — SOC 2, ISO 27001, CREST, OSCP for individual testers; (3) Industry experience — healthcare, fintech, SaaS, government; (4) Geographic and language coverage; (5) Pricing model — retainer, project-based, or per-incident. Always check client references and request sample reports.
SaaS startups typically need a vCISO for strategic guidance, an MSSP or MDR for monitoring once they have meaningful customer data, and a penetration testing firm for annual compliance and customer assurance. Compliance consultants help with SOC 2 Type II, the most common framework for SaaS companies. Filter providers by service type to compare options.