Four ways traditional pen testing falls short for SaaS companies

SaaS and high-tech companies increasingly deploy code daily across expanding ecosystems of microservices, APIs, subdomains, and AI-generated features, while traditional annual penetration tests provide only point-in-time assessments that can take weeks to complete and quickly become outdated. The passage argues that this creates gaps in release coverage, compliance evidence for standards such as SOC 2 and ISO 27001, visibility into shadow APIs, and testing of AI-specific risks such as prompt injection and model data leakage. It presents Penetration Testing as a Service (PTaaS) as a continuous alternative that offers live findings, repeatable testing, and more current evidence for enterprise security reviews. The proposed approach combines automated or agentic testing for broad, continuous coverage with human pentesters for complex business-logic vulnerabilities and attack chains, supported by attack-surface management. Citing examples from companies including Atlassian, Rapyd, ActiveCampaign, and Instructure, the passage contends that combining continuous testing with human expertise can identify more high-impact vulnerabilities and shorten remediation times.

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