Subscription-based offensive cybersecurity firm delivering continuous cyber attack services with CREST STAR and CBEST accreditations from its London headquarters.
Accreditations: CREST, CBEST, STAR
Services: Web Application, Network, Cloud, API +4
Best Penetration Testing Companies for Startups (2026)
Startups need penetration testing providers that understand the unique pressures of fast-moving companies: tight budgets, rapid release cycles, SOC 2 compliance deadlines, and the need for developer-friendly reporting that integrates into existing workflows.
About this list
The providers below specialise in working with startups and growth-stage companies, offering flexible engagement models, platform-based delivery, and the kind of fast turnaround that startup security teams need. Many offer Pentest as a Service (PTaaS) models that make regular testing accessible.
Related: Fast-turnaround pen testing · Affordable pen testing companies
11 providers
Elite security research firm specializing in source code review, blockchain auditing, and building industry-standard open-source security tools.
Accreditations: OSCP Employer
Services: Source Code Review, Web Application, API, Cloud +2
Cloud security penetration testing specialists known for the Pacu AWS exploitation framework and deep expertise across AWS, Azure, and GCP environments.
Accreditations: SOC 2
Services: Cloud, Web Application, Network, API +3
Crowdsourced bug bounty pioneer founded in 2012 by Casey Ellis, offering managed programs and crowd-powered penetration testing from hundreds of thousands of ethical hackers.
Accreditations: SOC 2, ISO 27001
Services: Web Application, API, Mobile App, Network +2
CREST-accredited, platform-driven penetration testing vendor in Bristol offering AI-augmented testing with rapid self-service booking for over 400 global customers.
Accreditations: CREST, Cyber Essentials
Services: Web Application, Network, Mobile App, IoT +4
Berlin-based web, browser, and cryptography auditors founded by Dr. Mario Heiderich, trusted by ExpressVPN, NordVPN, 1Password, and Bitwarden.
Accreditations: OSCP Employer
Services: Web Application, API, Source Code Review, Configuration Review +1
CREST-accredited North East England penetration testing specialist founded in 2019, offering accessible and transparent security testing with free retests and a strong focus on social engineering.
Accreditations: CREST, OSCP Employer
Services: Web Application, Network, Mobile App, Cloud +4
Cloud-based Penetration Testing as a Service platform combining AI-driven automation with expert manual testing at accessible price points.
Accreditations: SOC 2, ISO 27001
Services: Web Application, Network, API, Cloud +3
Toronto-based PTaaS provider delivering continuous penetration testing for Canadian fintech, SaaS, and OSFI-regulated organisations.
Accreditations: SOC 2, ISO 27001
Services: Web Application, Network, Mobile App, Cloud +3
Pioneer of Pentest as a Service, delivering fast, platform-based penetration testing with a vetted global community of security researchers.
Accreditations: SOC 2
Services: Web Application, Network, API, Mobile App +1
Independent Italian offensive security firm specialising in web, mobile, network, and embedded security assessments with a strong research focus.
Accreditations: ISO 27001
Services: Web Application, Network, Mobile App, IoT +5
Best Penetration Testing Companies for Startups (2026), FAQs
When should a startup get its first pen test?+
Get your first pen test before launching a product that handles customer data, before your first SOC 2 audit, or when enterprise customers start requiring evidence of security testing. Many startups get their first pen test at the Series A stage.
What should a startup look for in a pen testing provider?+
Look for providers with fast turnaround (days not weeks), developer-friendly reporting with integration options (Jira, GitHub), experience with modern tech stacks, and flexible pricing. Platform-based providers like Cobalt and BreachLock are popular with startups.
How much should a startup budget for pen testing?+
Budget $5,000-$15,000 for an initial web application pen test. PTaaS platforms can offer more predictable pricing. Plan for annual testing at minimum, with additional testing after major feature releases.
Do I need pen testing for SOC 2 compliance?+
SOC 2 does not explicitly require penetration testing, but it is strongly recommended and many auditors expect it. A pen test demonstrates that you are proactively testing your security controls, which supports multiple SOC 2 Trust Services Criteria.
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