Start with the decision
“We need a security check” is a useful starting point, but an incomplete scope. Are you releasing a new permissions model, inheriting a codebase or responding to a customer’s assessment request? Each situation creates a different question. Write that question down before choosing a service.
For a new authorization module, you may need to understand whether the code consistently enforces the product’s rules. For a running application, you may need to demonstrate what a user with limited access can actually reach. Those goals can lead to complementary work.
When source code is the useful starting point
Security code review examines implementation and context: trust boundaries, data flow, permissions and handling of untrusted input. It is useful when the question concerns a particular module, change or suspected root cause. The required access may include surrounding code, build instructions and tests.
A useful result identifies affected locations, explains the defect and gives developers a practical fix and verification path. Automated SAST can support the investigation, but its alerts still need interpretation and validation. Ask which modules are reviewed and how conclusions will be supported.
When running behavior is the priority
An application pentest investigates the product through agreed interfaces and attack paths. Accounts, roles, environments and operational limits shape what can be tested. This is useful for checking whether an exposed workflow permits an unintended action and understanding its observable impact.
The report should explain the tested scope, confirmed findings, reproduction steps and remediation priorities. Source access can improve an assessment when available; a pentest is not automatically restricted to a completely blind approach. Confirm the approach in the proposal.
Combine methods around one important question
For a sensitive API change, review the relevant access-control code, then exercise the behavior with the agreed roles. For a native parser, review input and size handling and consider targeted dynamic testing or fuzzing where feasible. The methods should follow the target and objective.
When budget is limited, choose a bounded component or workflow and retain useful depth. Agree the deliverables, exclusions and any fix verification in writing. I can help you define that scope from a short description of your product, stack and reason for the review.
Sources
Discuss this kind of review
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