Top 10 Best Cloud Penetration Testing Companies in 2025

GBHackers’ Top 10 touts 2025 as a year when cloud penetration testing becomes a strategic necessity, highlighting firms that combine human expertise with scalable PTaaS platforms. The piece enumerates Synack, Bishop Fox, Offensive Security, CrowdStrike, Cobalt, Rapid7, NetSPI, Trustwave, NCC Group and Mandiant as leading options, noting their distinct strengths from continuous, platform-backed testing to deep cloud-native focus and threat intelligence.

It explains that cloud pentesting demands specialist skills in IAM, API security, containers and serverless environments, and that multi-cloud strategies have made robust testing non-negotiable. The review uses a three-part framework—Experience, Authority, and Feature-Richness—to compare offerings such as human-led testing, Platform/PTaaS models, and reporting quality, with the conclusion that the best choice depends on an organisation’s needs.

Published on 11 September 2025, the article also situates these firms in the broader context of dynamic cloud environments and high-stakes security testing.