Cobalt

Cobalt is a penetration testing as a service (PTaaS) vendor that pioneered the PTaaS model in 2013, pairing a SaaS delivery platform with the Cobalt Core, a vetted community of more than 500 freelance pentesters. More than 1,500 customers, from startups to enterprises, use Cobalt for application and network pentests, code reviews, risk assessments, red team exercises, and IoT testing. Cobalt was named a Leader in the 2025 GigaOm Radar for Pentest as a Service for the fourth consecutive year.