Top 10 Cloud Penetration Testing Firms to Watch in 2025

With an increasing number of firms transitioning their infrastructure to the cloud, cloud penetration testing has evolved into an essential service.

In contrast to conventional network evaluations, cloud pentesting emphasizes distinct attack vectors including misconfigured services, vulnerable APIs, and excessively permissive IAM (Identity and Access Management) policies.

By 2025, the leading companies in this domain fuse extensive expertise in cloud-native weaknesses with an adaptable, platform-oriented strategy to deliver ongoing, actionable security insights.

Why We Opt for It

Cloud settings, especially multi-cloud architectures, pose a challenging security dilemma.

Misconfigurations are the primary culprit behind cloud security incidents, and automated scanners frequently overlook the subtle, exploitable deficiencies in service connectivity or configuration.

Cloud penetration testing transcends automated scans by emulating a genuine attacker’s perspective.

Skilled pentesters take advantage of vulnerabilities in Amazon Web Services (AWS), Google Cloud Platform (GCP), and Microsoft Azure, revealing critical weaknesses that could result in data breaches, service interruptions, or unauthorized entry.

How We Select The Premier Cloud Penetration Testing Firms in 2025

We identified the leading cloud penetration testing companies for 2025 based on three primary criteria:

• Experience & Expertise (E-E): We sought firms with a solid record, an in-depth comprehension of cloud service provider (CSP) nuances, and a history of uncovering and responsibly reporting cloud vulnerabilities.
• Authoritativeness & Trustworthiness (A-T): We evaluated market leadership, industry recognition, and the esteem of their offensive security teams.
• Feature-Richness: We analyzed the thoroughness of their platforms and services, focusing on capabilities in:
• CSP-Specific Expertise: The proficiency in identifying vulnerabilities peculiar to AWS, Azure, and GCP.
• Continuous Testing: A platform or service framework facilitating ongoing security validation as the cloud landscape evolves.
• Advanced Reconnaissance: The aptitude to identify all publicly available cloud assets.
• Actionable Reporting: Transparent, prioritized reports featuring detailed remediation strategies and re-testing opportunities.

Comparison Of Essential Features in 2025

Top 10 Premier Cloud Penetration Testing Firms in 2025

• NetSPI
• Bishop Fox
• Synack
• Rhino Security Labs
• Astra Security
• Praetorian
• Coalfire
• Pentera Cloud
• TrustedSec
• Cobalt.io

1. NetSPI

NetSPI stands out in cloud penetration testing, known for its PTaaS (Penetration Testing as a Service) platform, Resolve.

Their expert team is adept at identifying vulnerabilities within multi-cloud ecosystems, including misconfigurations, excessively broad access, and weaknesses in container security.

NetSPI’s platform offers real-time insights into findings, enhancing the overall testing process for greater efficiency and collaboration.

The company’s engagement with 9 out of 10 of the leading banks in the US and the largest cloud providers showcases their credible expertise.

Why You Should Consider It:

NetSPI’s Resolve platform optimizes the entire pentest journey, from scoping to remediation. This positions it as a prime option for organizations aiming to centralize their security findings and gauge progress over time.

Feature	Yes/No	Specification
CSP-Specific Expertise	✅ Yes	Experts in AWS, Azure, and GCP.
Continuous Testing	✅ Yes	PTaaS model featuring continuous testing and real-time findings.
Advanced Reconnaissance	✅ Yes	Thorough external asset discovery.
Actionable Reporting	✅ Yes	In-platform collaboration plus detailed reports.

✅ Best For: Large enterprises that require a scalable, continuous, and platform-centric approach to cloud security.

Try NetSPI here → NetSPI Official Website

2. Bishop Fox

Bishop…
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Fox is a premier offensive security organization with a robust reputation for its Cloud Penetration Testing offerings.

The firm’s array of exceptionally inventive and skilled professionals, referred to as “The Fox,” employs state-of-the-art, proprietary, and open-source tools to emulate real-world assaults.

They are proficient at uncovering intricate misconfigurations and attack vectors, delivering a genuinely authentic evaluation of a company’s cloud protections.

Reasons to Consider It:

Bishop Fox’s proficiency is unparalleled. Their evaluators go beyond conventional assessments to uncover advanced vulnerabilities that automated systems and less seasoned firms might overlook.

They offer insights into the most critical and exploitable attack routes.

Feature	Yes/No	Specification
CSP-Specific Expertise	✅ Yes	Extensive knowledge across all primary CSPs.
Continuous Testing	✅ Yes	Provides a continuous attack surface testing (CAST) model.
Advanced Reconnaissance	✅ Yes	Thorough identification of cloud-related attack vectors.
Actionable Reporting	✅ Yes	Customized executive and technical reports with prioritized findings.

✅ Ideal For: Entities that require a highly tailored and technically in-depth cloud security evaluation from one of the most esteemed offensive security organizations.

Explore Bishop Fox here → Bishop Fox Official Website

3. Synack

Synack has pioneered the PTaaS model and implements its crowdsourced strategy for cloud security.

The organization can mobilize a varied group of vetted ethical hackers to assess cloud environments, ensuring wider coverage and identifying more vulnerabilities in a shorter time than a small, static team.

Synack’s platform is capable of integrating with AWS, Azure, and GCP to automatically detect modifications and initiate on-demand tests, rendering it a highly flexible solution.

Reasons to Consider It:

Synack’s model delivers unmatched scalability and rapid responses. The capability to have numerous researchers from around the globe assessing your cloud environment concurrently ensures a comprehensive, 24/7 security stance.

Feature	Yes/No	Specification
CSP-Specific Expertise	✅ Yes	Integrations with AWS, Azure, and GCP.
Continuous Testing	✅ Yes	On-demand and continuous testing via the Synack Platform.
Advanced Reconnaissance	✅ Yes	Ongoing asset discovery with AI-driven validation.
Actionable Reporting	✅ Yes	Real-time reporting and patch verification on the platform.

✅ Ideal For: Organizations that seek ongoing, on-demand cloud testing and wish to harness the capabilities of a vast, crowdsourced network of elite hackers.

Explore Synack here → Synack Official Website

4. Rhino Security Labs

Rhino Security Labs is a meticulously specialized cloud penetration testing firm, widely acknowledged for its profound expertise in AWS, Azure, and GCP.

The firm’s research team has a record of uncovering and disclosing notable cloud vulnerabilities and tools, including the Pacu cloud exploitation framework.

This research-driven methodology guarantees that their evaluations remain aligned with the latest attack strategies.

Reasons to Consider It:

Rhino Security Labs’ offerings are founded on a cutting-edge research basis, ensuring they uncover vulnerabilities that are not yet widely recognized.

They are adept at attacking the cloud from the viewpoint of a sophisticated threat actor.

Feature	Yes/No	Specification
CSP-Specific Expertise	✅ Yes	Core specialization in AWS, Azure, and GCP.
Continuous Testing	❌ No	Focuses on conventional, time-limited engagements.
Advanced Reconnaissance	✅ Yes	Thorough cloud asset enumeration.
Actionable Reporting	✅ Yes	Comprehensive reports with clear remediation suggestions.

✅ Ideal For: Organizations with intricate cloud structures that desire collaboration with a firm renowned for its profound technical knowledge and contributions to cloud security research.

Explore Rhino Security Labs here → Rhino Security Labs Official Website

5. Astra Security

Astra Security presents a thorough Cloud Pentest Suite that merges automated scanning with expert human evaluation.

The organization’s platform conducts over 13,000 automated security assessments and compliance checks, which are subsequently validated by human pentesters.

This hybrid methodology guarantees both the rapidity of automation and the profundity of human expertise, rendering it a highly effective solution.

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solution for ongoing cloud protection.

Reasons to Purchase It:

Astra’s combination of automation and manual examination presents a budget-friendly and effective approach to safeguard your cloud resources.

The platform streamlines vulnerability oversight and delivers straightforward, developer-centric reports to expedite remediation.

Characteristic	Yes/No	Detail
CSP-Specific Knowledge	✅ Yes	Covers AWS, Azure, and GCP.
Ongoing Testing	✅ Yes	PTaaS platform featuring continuous vulnerability scanning.
Enhanced Reconnaissance	✅ Yes	Identifies and maps cloud infrastructure.
Practical Reporting	✅ Yes	Comprehensive reports with detailed remediation steps.

✅ Ideal For: Small to medium enterprises and nimble development teams requiring a swift, cost-efficient, and continuous cloud protection solution.

Explore Astra Security here → Astra Security Official Website

6. Praetorian

Praetorian is a proactive cybersecurity firm that offers expert-led cloud penetration examination services. They adopt an adversarial mindset to assist organizations in prioritizing and mitigating significant risks within their cloud settings.

Praetorian’s offerings aim to exceed basic compliance, concentrating on revealing exploitable weaknesses most likely to be exploited by real-life attackers.

The organization also provides Continuous Threat Exposure Management (CTEM) to uphold security over time.

Reasons to Purchase It:

Praetorian’s distinct methodology enables you to maximize your security expenditure by emphasizing the vulnerabilities that present the highest risk.

Their proficiency guarantees that you’re not just identifying flaws but comprehending their potential effects on your organization.

Characteristic	Yes/No	Detail
CSP-Specific Knowledge	✅ Yes	Extensive knowledge across all leading CSPs.
Ongoing Testing	✅ Yes	CTEM offerings for ongoing security verification.
Enhanced Reconnaissance	✅ Yes	Discovers external attack surfaces and exploitable entry points.
Practical Reporting	✅ Yes	Offers insights on major risks and strategic advice.

✅ Ideal For: Organizations seeking a strategic ally for proactive security, emphasizing real-world risk mitigation instead of mere compliance.

Explore Praetorian here → Praetorian Official Website

7. Coalfire

Coalfire is a cybersecurity service provider with a strong emphasis on compliance, especially for FedRAMP, PCI, and SOC 2.

Their cloud penetration testing services are customized to assist organizations in adhering to these rigorous regulatory standards while bolstering their security status.

Coalfire’s specialists evaluate cloud configurations, network segmentation, and application security to ensure that both technical and compliance criteria are fulfilled.

Reasons to Purchase It:

Coalfire’s extensive knowledge in compliance and its experience working with federal and tightly-regulated clients makes it an optimal partner for organizations that need to prove their cloud security stance to auditors and regulatory bodies.

Characteristic	Yes/No	Detail
CSP-Specific Knowledge	✅ Yes	Expertise in cloud security for various compliance frameworks.
Ongoing Testing	✅ Yes	Provides continuous testing as part of its managed services.
Enhanced Reconnaissance	✅ Yes	Thorough cloud asset identification.
Practical Reporting	✅ Yes	In-depth reports with a strong emphasis on compliance criteria.

✅ Ideal For: Firms in highly regulated sectors that require a cloud penetration examination compliant with strict regulatory standards.

Explore Coalfire here → Coalfire Official Website

8. Pentera Cloud

Pentera Cloud delivers a distinctive, automated security validation and is one of the premier platforms for cloud penetration testing that emulates cloud-native attacks.

Unlike traditional manual penetration testing, Pentera’s framework continuously tests an organization’s cloud environment, identifying exploitable misconfigurations and pathways for attack without requiring human input.

The platform provides a hybrid assessment, uncovering attack routes that extend across both cloud and on-premises settings.

Reasons to Purchase It:

Pentera Cloud offers a continuous, always-active security evaluation, making it ideal for organizations with fast-evolving cloud landscapes.

Its capability to uncover exploitable attack chains between…
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Utilizing on-site and cloud infrastructures is a significant benefit.

Attribute	Affirmative/Negative	Description
CSP-Specialized Knowledge	✅ Affirmative	Automated evaluation for cloud-specific vulnerabilities.
Ongoing Testing	✅ Affirmative	Continuous security assessment and attack simulation.
Enhanced Reconnaissance	✅ Affirmative	Maps cloud functionalities, databases, and identities.
Practical Reporting	✅ Affirmative	Evidence-driven remediation summaries.

✅ Ideal For: Entities that require ongoing verification of their cloud security measures via an automated, hybrid method.

Explore Pentera Cloud here → Pentera Cloud Official Website

9. TrustedSec

TrustedSec is a highly regarded cybersecurity advisory firm recognized for its expert-driven, practical penetration testing offerings.

Their strategy for cloud security is tailored, with specialists mimicking real-world cyber intrusions on AWS, Azure, and GCP platforms.

TrustedSec is acclaimed for its thorough reporting and a strong emphasis on delivering clear, prioritized remediation recommendations.

Reasons to Purchase:

TrustedSec’s reputation stems from the proficiency of its consultants. If you’re looking for a comprehensive, hands-on evaluation from a company that emphasizes a deep understanding of your distinct environment, TrustedSec is a superb option.

Attribute	Affirmative/Negative	Description
CSP-Specialized Knowledge	✅ Affirmative	Experts in AWS, Azure, and GCP.
Ongoing Testing	❌ Negative	Focuses on conventional, project-centric assignments.
Enhanced Reconnaissance	✅ Affirmative	Performs exhaustive cloud asset enumeration.
Practical Reporting	✅ Affirmative	Comprehensive, technical reports with remediation suggestions.

✅ Ideal For: Organizations that appreciate a tailored, high-touch service from a team of highly adept and ethical hackers.

Explore TrustedSec here → TrustedSec Official Website

10. Cobalt.io

Cobalt.io is a trailblazer of the PTaaS model, providing a platform that links companies with a global network of vetted security analysts.

For cloud penetration assessments, Cobalt’s platform allows organizations to quickly define and commence projects, giving access to specialized expertise and expediting the testing process.

The platform consolidates all results, simplifying vulnerability tracking and management.

Reasons to Purchase:

Cobalt’s platform and crowdsourced approach enable you to initiate a cloud penetration test in days rather than months.

The seamless workflow and immediate access to expertise allow for an efficient way to embed security into your development cycle.

Attribute	Affirmative/Negative	Description
CSP-Specialized Knowledge	✅ Affirmative	Provides network & cloud security evaluations.
Ongoing Testing	✅ Affirmative	PTaaS model for on-demand and continuous engagements.
Enhanced Reconnaissance	✅ Affirmative	Identifies and evaluates the cloud attack surface.
Practical Reporting	✅ Affirmative	In-platform dashboards and bug assessments.

✅ Ideal For: Rapidly moving tech firms and nimble teams that require a versatile, on-demand, and scalable solution for cloud penetration assessments.

Explore Cobalt.io here → Cobalt.io Official Website

Conclusion

The cloud has profoundly transformed the realm of cybersecurity, and cloud penetration testing has transitioned from a niche service to an essential requirement.

The leading firms in 2025 will be those that have advanced past conventional testing to adapt to the intricacies of multi-cloud ecosystems, perpetually changing attack vectors, and the demand for speed.

While platforms like NetSPI, Synack, and Cobalt.io propose a contemporary, effective PTaaS model, organizations like Bishop Fox and Rhino Security Labs deliver extensive, research-driven expertise for the most critical cloud environments.

Your selection should correspond with your organization’s particular requirements, whether that is ongoing, automated validation, a comprehensive expert evaluation, or compliance-centered testing.

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