Top 10 Best Internal Network Penetration Testing Providers in 2025

The article lists the Top 10 Best Internal Network Penetration Testing Providers for 2025, profiling UnderDefense, Secureworks, Rapid7, NetSPI, Cobalt[.]io, Synack, AppSecure, Bishop Fox, ScienceSoft, and Astra as leading options. It explains that these providers are assessed on manual testing, automated scanning, advanced post-exploitation, actionable reporting, and continuous testing, with notes on each company’s strengths, approach, and intended customers.

UnderDefense is described as an offensive security provider with a “beyond scanners” approach, emphasising human-led testing and ongoing services. Secureworks is linked to its Counter Threat Unit (CTU) threat intelligence and a methodology focused on real-world risks, though its continuous testing is listed as not offered. Rapid7 is highlighted for its market leadership, combining proprietary tools with expert methodology for hands-on assessments.

NetSPI highlights its Resolve platform for centralised, trackable reporting and large-scale, continuous testing, while Cobalt[.]io promotes the PTaaS model with real-time visibility and flexible pricing. Astra combines an intelligent scanner with a team of ethical hackers to offer a user-friendly PTaaS experience.