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When does your application need custom security testing?

Find out when custom security testing adds value alongside scans and penetration tests for an existing application.

Custom security testing is useful when important risks depend on how your own application works. Standard scans and penetration tests can reveal valuable issues; tests tailored to your permissions, integrations and business rules add coverage for scenarios that require application-specific knowledge.

Signs that tailored testing may help

Consider additional testing if customers share infrastructure but must never see each other's records, if money or approvals pass through several steps, or if background jobs act on permissions that may change. Other signals include complex role hierarchies, legacy code, sensitive integrations and fixes that keep recurring.

A generic test cannot decide whether a finance user may approve their own request or whether an export should include archived records. Those answers come from your team and become the basis for testable security rules.

Start with one important workflow

Choose a process whose failure would matter. Map the roles, assets, entry points and expected outcomes with the people who build and operate it. Review how the application enforces those rules, then test representative authorised, unauthorised and incomplete cases in an agreed environment.

Document evidence and reproduction steps for the development team. Where practical, convert important findings into repeatable regression tests and check that the normal user journey still works. Agree how results are reviewed and who maintains the checks when the feature changes.

Fit the work to your existing team

You do not need to replace your scanner or wait for a complete rewrite. A focused engagement can begin with a review of one service or workflow and grow according to the findings. The scope, access and handling of sensitive data should be agreed before testing starts.

OWASP's secure code review guide explains how human review complements automated testing. PolderLabs combines software engineering and security experience to build checks that fit an existing codebase. See our tailored security service.

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