Top Penetration Testing Firms
Also known as: pen testing
19 agencies foundUpdated October 15, 2026
Research-driven AI, software, blockchain, and cybersecurity engineering for hard technical problems
Los Angeles, California11-502003
Dreamers Inc. is a research-driven engineering studio for organizations with technically difficult software and AI problems. We build private LLM and RAG systems, citation-grounded document intelligence, custom machine learning, GPU and cloud infrastructure, blockchain and Web3 systems, cybersecurity tooling and assessments, data platforms, workflow automation, and specialized web applications. Our work tends to sit where normal software consulting stops being enough: secure knowledge synthesis, AI-assisted legal and scientific workflows, retail recommendation and 3D spatial commerce, high-throughput genomics pipelines, autonomous energy optimization, AWS GovCloud SaaS modernization, decentralized freight and commerce infrastructure, Solana validator operations, and security testing for advanced cryptographic software. Clients work with Dreamers when they need senior engineers who can reason across product, infrastructure, data, security, and domain research. We focus on careful architecture, direct communication, and systems that keep working under real operational pressure.
Artificial IntelligenceBlockchain & Web3 DevelopmentCloud ServicesSoftware DevelopmentSaaS & Cloud SoftwareFintechCybersecurity10 ReviewsEstablished25 Reviews
$100 - $150/hrMin. $25,000
$100 - $150/hrMin. $25,000
Frequently Asked Questions About Penetration Testing
What is Penetration Testing (pen testing)?
Penetration testing is a cybersecurity assessment where ethical hackers simulate real cyberattacks to identify security vulnerabilities in your IT systems, networks, and applications. Professional pen testing firms use the same techniques as malicious hackers to uncover weaknesses before they can be exploited, providing detailed reports with remediation recommendations.
How much does Penetration Testing cost?
Penetration testing costs typically range from $5,000 to $50,000+ depending on the scope, complexity of your IT environment, and testing methodology required. Factors affecting pricing include the number of systems to test, compliance requirements, and whether you need external, internal, or application-specific testing.
What should I look for in a Penetration Testing provider?
Look for certified professionals with credentials like CISSP, CEH, or OSCP, proven experience with your industry and compliance requirements, and a track record with complex hybrid environments. The best pen testing firms provide comprehensive reporting, remediation guidance, and follow-up testing to verify fixes.
