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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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Independent auditing & certification firm for SOC, ISO, PCI-DSS, HIPAA & privacy
Cybersecurity services firm offering assessments, architecture, and compliance solutions.
UK cybersecurity consultancy offering advisory, managed security, and GRC services.
IT risk mgmt firm providing cybersecurity consulting & vCISO services
Cybersecurity consulting firm specializing in CMMC compliance & advisory
Develops software to support enterprise information security measures
IT consulting firm providing security assurance, app dev, and staffing services
Data security and compliance services provider with PCI, HIPAA, and CMMC focus
Cybersecurity ratings & third-party risk mgmt for supply chain protection
Risk management platform for measuring and managing infosec risk across orgs.
Compliance consulting firm specializing in PCI DSS, GDPR, DPDPA & ISO 27001
Cybersecurity consulting firm offering vCISO, GRC, vuln mgmt, and SOC services.
Austin-based MSP offering IT strategy, managed services, and cybersecurity compliance.
Riyadh-based GRC automation platform and cybersecurity awareness LMS provider.
Cyber insurance and cybersecurity platform for European SMEs, with AI-powered tools.
Cloud-native GRC platform for risk, compliance, and audit management
Cybersecurity staffing & outsourced security teams for startups & compliance
FedRAMP 3PAO providing GRC, risk mgmt, compliance & cloud security services
GRC & cybersecurity services firm specializing in ServiceNow solutions
Cybersecurity & compliance consultancy supporting CISOs and security leaders
Strategic cybersecurity consulting and advisory services for executives
Risk management and cybersecurity services for financial markets
Cybersecurity compliance services & risk assessments for regulated industries
Cybersecurity firm offering pen testing, compliance, and vCISO services for SMEs.
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.