An application security audit is a commissioned technical review of your code, architecture, and runtime behavior that identifies exploitable weaknesses before attackers do. The deliverable is a prioritized remediation plan, not just a list of flaws, and a retest to confirm the fixes hold. The next step is straightforward: scope the audit by asset type and target the OWASP ASVS level, then request proposals from qualified providers.
TL;DR:
- Costs vary based on application size, testing depth, and whether a retest is included, with quotes dependent on a detailed asset inventory.
- An effective audit covers architecture review, automated scans, manual code review, and configuration checks, but APIs are often overlooked despite their security relevance.
- Critical vulnerabilities frequently found include injection flaws, broken authentication, and insecure dependencies, all posing significant business risks.
- A comprehensive report prioritizes findings by business impact and must include a retest, clear scope, and supporting evidence for ongoing compliance.
- Integrating automated security tests into continuous deployment processes helps prevent the reintroduction of vulnerabilities after fixes.
What does an application security audit actually cover?
An audit is broader than a single penetration test and more rigorous than an automated scanner sweep. A pentest usually simulates one or two attack paths against a live target, while an automated scan flags surface-level issues without human judgment. A full audit layers these methods together and adds architecture and configuration review, so you see both the technical holes and the structural decisions that created them.
A properly scoped engagement typically includes:
- Architecture and design review to catch systemic weaknesses before they reach code
- Static application security testing (SAST) to find insecure coding patterns
- Software composition analysis (SCA) and a software bill of materials (SBOM) check for vulnerable dependencies
- Manual code review for business-logic flaws that automated tools miss
- Dynamic application security testing (DAST) against running environments
- Configuration and infrastructure-as-code (IaC) review for misconfigured servers, containers, and cloud resources
APIs get left out of scope more often than they should, even though they frequently carry the same authentication and data-handling logic as the main application.
When should you schedule a security audit, and how often?
Timing an audit around real risk events works better than running one on a fixed calendar alone. Several triggers should move an audit up your schedule:
- A major release or architectural change that alters how data flows through the system
- A new feature that handles sensitive data, payments, or authentication
- A new third-party integration or infrastructure migration that expands your attack surface
- A contractual or regulatory requirement, including obligations tied to NIS2 and DORA
- The anniversary of your last full audit, for applications classified as critical
Polish amendments to the national cybersecurity law passed in 2026 expand authorities’ ability to order audits and broaden obligations for key entities, which raises the regulatory stakes for some sectors. For cadence, run automated SAST and SCA scans on every build inside your CI/CD pipeline, and reserve a full manual audit or penetration test for annual cycles or whenever a major change lands.
Which methods and standards should your audit follow?
Each testing method answers a different question. SAST examines source code for insecure patterns before deployment. SCA checks third-party libraries and dependencies for known vulnerabilities. DAST probes a running application the way an external attacker would. Manual penetration testing and threat modeling, often structured around frameworks like STRIDE, catch business-logic flaws and chained exploits that automated tools cannot reason about on their own.
OWASP ASVS organizes this work into three verification levels. Level 1 suits general applications and establishes baseline controls. Level 2 fits applications handling sensitive business or personal data. Level 3 targets critical systems, such as those processing financial transactions or regulated health data, where the depth of verification needs to match the consequences of a breach.
ASVS maps application security controls into categories spanning architecture, authentication, session management, access control, input validation, and cryptography, giving auditors a consistent checklist rather than an ad hoc list of tests.
Your statement of work should name the methodology explicitly: ASVS level, OWASP Web Security Testing Guide (WSTG), or PTES. It should also state assumed access levels (black box, gray box, or white box) so the quote and the findings are comparable to other proposals.
- Name the ASVS level and testing guide the auditor will follow
- State whether testing is black box, gray box, or white box
- Define which environments and credentials the auditor receives
What vulnerabilities turn up most often, and what do they cost the business?
Most audits surface a familiar set of issues: injection flaws (SQL or command injection), cross-site scripting (XSS), broken authentication or session handling, outdated or vulnerable dependencies, and security misconfigurations in servers or cloud settings. Each of these translates into a business consequence, not just a technical one.
- Injection and broken authentication can lead directly to a data leak or account takeover
- Cross-site scripting can expose customer sessions and damage trust with your users
- Insecure dependencies and misconfigurations create openings for fraud or ransomware
- Any of these can trigger regulatory fines or breach-notification obligations depending on the data involved
Prioritize remediation by the business impact of the asset affected, not by the technical severity score alone. A medium-severity flaw in a payment flow usually outranks a high-severity flaw in an internal admin tool nobody outside your team can reach.
What should a strong audit report and remediation plan include?
A useful report speaks to two audiences at once: the people deciding what to fund and the engineers who have to fix it. An executive summary written for leadership should rank findings by business risk, not raw CVSS score, so budget conversations start from the right priorities. A technical appendix should give engineers reproduction steps, proof-of-concept detail, screenshots, and concrete remediation guidance for each finding.
Three contractual points separate a usable engagement from a one-off document:
- A retest is included once fixes are deployed, confirming the vulnerability is actually closed
- Scope changes during the engagement are documented and priced before work continues
- Evidence and findings are retained for an agreed period in case of audit or compliance review
Pro Tip: Ask for a redacted sample report before signing anything. It tells you more about a provider’s rigor than any sales call will.
How much does an audit cost, and how long does it take?
Price and timeline both scale with the same few variables. The number of applications and endpoints in scope drives most of the cost, followed by testing depth (black box engagements take longer than white box ones, since testers have less visibility up front), any regulatory reporting format you need, and whether a retest is bundled in.
- A small application with a limited attack surface typically completes quickly
- A medium-complexity application, such as a typical SaaS product, generally requires a few weeks
- A large platform with multiple services and integrations may require several weeks or more
You can shorten the quoting process by handing providers a clean asset inventory, confirmed access windows, and a clear statement of the deliverables you expect up front.
How do you choose a provider and write the statement of work?
A provider’s answers to a short list of questions tell you most of what you need to know: which methodology they follow, how experienced the team is, whether they can show a sample report, whether retest is included, and whether they carry professional liability insurance. Practical procurement guidance recommends treating a refusal to share a sample report, or a team that only runs automated scans, as a clear warning sign.
Build the SOW around specifics rather than general promises:
- Name the methodology and ASVS level the engagement will follow
- Require a retest after remediation, with pricing agreed in advance
- Set delivery milestones and acceptance criteria for the final report
- Confirm liability terms, insurance coverage, and a signed NDA before testing begins
The same discipline applies when vetting third-party vendors who touch your systems; security requirements for SaaS partners deserve the same specificity you’d put in your own SOW.
Pro Tip: Put the retest clause in writing before the audit starts, not after you see the findings.
Why the audit is only half the job
An audit report that sits in an inbox fixes nothing. The engagements that actually reduce risk feed findings straight into the engineering backlog and close the loop with a retest, rather than treating the report as a compliance artifact to file away. Integrating SAST and SCA into your CI/CD pipeline catches new issues at commit time, which prevents the same class of vulnerability from reappearing release after release.
— Vlad
Get an audit paired with the team that fixes what it finds
We run application security audits with methodology named up front, a sample report available before you sign, and a retest built into the scope rather than sold separately. What sets our audits apart is what happens after the report lands. We address prioritized findings directly and integrate SAST and SCA checks into your CI/CD pipeline to help prevent the same class of vulnerability from resurfacing at the next release.
If you need an audit that ends in fixed code rather than a PDF nobody actions, reach out through our technical audit and consulting services and we will scope the engagement around your applications, your ASVS target, and your timeline.
FAQ
Ile kosztuje audyt bezpieczeństwa?
Cost depends on the number of applications in scope, testing depth, and whether a retest is included, so providers quote based on your specific environment rather than a flat rate. Request quotes after preparing an asset inventory and access plan, since that detail speeds up accurate pricing from any vendor.
Na czym polega audyt bezpieczeństwa?
A security audit combines architecture review, automated testing (SAST, SCA, DAST), and manual code review or penetration testing to find exploitable weaknesses across your application. The output is a report that ranks findings by business risk and includes a remediation plan, with a retest confirming the fixes worked.
Czy audyt bezpieczeństwa informacji jest obowiązkowy?
Whether an audit is mandatory depends on your sector and the regulations that apply to it, including obligations introduced under recent amendments to the national cybersecurity law for certain key entities. Outside of those specific regulatory categories, audits remain a best practice rather than a universal legal requirement, so confirm your obligations with a compliance professional.
Ile kosztuje audyt bezpieczeństwa informacji?
As with application audits, pricing for an information security audit scales with scope, the number of systems reviewed, and the depth of testing required, so there is no single fixed figure. Providers typically quote after reviewing your asset inventory and the regulatory framework that applies to your organization.
Sources
- OWASP Application Security Verification Standard (ASVS)
- ASVS 5.0 roadmap — OWASP blog
- Ustawa o zmianie ustawy o krajowym systemie cyberbezpieczeństwa (2026)
- Testy penetracyjne i testy bezpieczeństwa — QualityIsland
