How to Evaluate SAST Tools
A structured methodology for evaluating SAST tools, including coverage, accuracy, integration, deployment, and total cost of ownership considerations.
Primary question: What criteria and methodology should organizations use when evaluating Static Application Security Testing tools?
Direct answer
Evaluating SAST tools requires a structured methodology that assesses detection accuracy, coverage breadth, integration capabilities, deployment model, analyst experience, and total cost of ownership against representative codebases and real-world development workflows.
Evaluating SAST tools should be a structured process that goes beyond vendor demonstrations and benchmark scores. Organizations should test tools against their own representative codebases, measure detection accuracy against known ground truth, assess the quality of findings and actionable remediation guidance, evaluate integration with existing CI/CD pipelines, and consider the total cost of ownership including licensing, training, and ongoing maintenance.
Key evaluation criteria include — detection accuracy (precision and recall), coverage of relevant vulnerability classes and frameworks, quality of remediation guidance, ease of configuration and tuning, CI/CD integration capabilities, deployment model (cloud, on-premises, hybrid), reporting and dashboard quality, and the overall analyst experience. Each criterion should be weighted based on organizational priorities.
Definitions
SAST evaluation
The process of systematically assessing a Static Application Security Testing tool against defined criteria including detection accuracy, coverage, performance, integration, and usability.
Representative codebase
A codebase that accurately reflects the organization's typical development practices, technology stack, coding patterns, and architectural style, used as a test subject during SAST evaluation.
Proof of concept
A limited-duration evaluation of a SAST tool against representative codebases and workflows, designed to assess whether the tool meets the organization's specific requirements before making a procurement decision.
The engineering problem
Organizations may evaluate SAST tools based solely on vendor demonstrations or published benchmark scores, which may not reflect real-world performance against their specific codebases.
Evaluation teams may focus only on detection accuracy while overlooking integration complexity, analyst experience, and total cost of ownership, leading to suboptimal procurement decisions.
SAST tool selection may be driven by sales commitments rather than empirical evidence from testing against representative codebases.
Security controls
Each control inspects a different artifact and produces evidence for an engineering decision.
Representative codebase testing
Real-world testing- Artifact
- A SAST evaluation based on testing against representative codebases that reflect the organization's actual development practices and technology stack.
- Risk
- Selecting a SAST tool based on benchmark scores that do not reflect performance against the organization's actual code.
- Output
- Empirical evidence of SAST tool performance against representative codebases.
Evidence:
Detection accuracy measurement
Accuracy assessment- Artifact
- A measurement of SAST detection accuracy (precision and recall) against known ground truth in representative codebases.
- Risk
- Overestimating or underestimating a SAST tool's detection capabilities based on incomplete or biased testing.
- Output
- Measured detection accuracy with clear understanding of strengths and limitations.
Evidence:
Integration assessment
Integration testing- Artifact
- A SAST tool tested for integration with existing CI/CD pipelines, issue tracking systems, and security workflows.
- Risk
- Selecting a SAST tool that does not integrate well with existing tooling, creating workflow friction and reducing adoption.
- Output
- Validated integration with existing tooling and workflows.
Evidence:
Total cost of ownership analysis
Cost analysis- Artifact
- A total cost of ownership analysis that includes licensing, deployment, training, maintenance, tuning, and ongoing operational costs.
- Risk
- Selecting a SAST tool based on upfront licensing costs while overlooking ongoing operational costs.
- Output
- Complete total cost of ownership analysis for informed procurement decisions.
Evidence:
Verification workflow
- Define evaluation criteria and weight them based on organizational priorities.
- Select representative codebases that reflect the organization's actual development practices.
- Create ground truth datasets with known vulnerabilities for accuracy measurement.
- Run each SAST tool against the representative codebases.
- Measure detection accuracy (precision and recall) against ground truth.
- Assess integration with existing CI/CD pipelines and security workflows.
- Evaluate analyst experience, remediation guidance quality, and reporting.
- Analyze total cost of ownership including licensing, deployment, training, and ongoing costs.
- Document findings and make a procurement decision based on empirical evidence.
DerScanner · Enterprise
Relationship to DerScanner
DerScanner provides SAST analysis with coverage of multiple programming languages and frameworks, CI/CD integration via command-line interaction, and on-premises deployment options.
DerScanner provides static analysis with coverage of multiple programming languages and frameworks, CI/CD integration via command-line interaction, and on-premises deployment options. [derscanner-sast]
Limits of verification
- No SAST tool provides complete vulnerability detection coverage across all languages, frameworks, and vulnerability classes.
- Detection accuracy varies depending on the codebase characteristics, coding patterns, and configuration.
- Evaluation results from one codebase may not generalize to all codebases, even within the same organization.
Related knowledge
SAST Proof of Concept
How to structure a SAST proof of concept evaluation
Relationship: related-toSAST Evaluation Criteria
Key criteria for evaluating SAST tools
Relationship: related-toMulti-SAST Strategy
Using multiple SAST tools in a security workflow
Relationship: related-toApplication Security Assurance
Building layered application security assurance
Relationship: related-toCanonical terms used: SAST evaluation; SAST tool comparison; Proof of concept; Representative codebase.
Evidence and references
- DerScanner SAST documentationDerScanner SAST analyzes supported source and binary formats, configuration files, and reporting and comparison of analysis results, with command-line interaction with CI systems and SSDLC integration.
derscanner-sast
SAST evaluation