Application Security

Vilkas finds what automated tools miss through deep, manual web, mobile, and API testing, with optional secure code review to dig even deeper.

Uncover Weaknesses — Secure Your Application Stack

  • Identify Critical Vulnerabilities

    Discover business logic flaws, injection points, broken access controls, and more, before attackers do.

  • Simulate Real-World Attacks

    Assess authentication, session handling, authorization, and data protection with adversary-like techniques.

  • Continuous Improvement

    Actionable guidance for developers and leadership to strengthen your Secure SDLC and reduce future risk.

Web Application Security Assessment

Deep manual testing of modern web stacks to uncover auth/authorization issues, injection, insecure deserialization, business logic flaws, and more. Includes coverage for single-page apps and microservices. (Includes thick client where applicable.)

Mobile Application Security Assessment

iOS and Android testing with static and dynamic techniques: storage and transport security, auth/session, deep-linking, jailbreak/root detection, and API interactions.

API Security Assessment

Comprehensive API testing based on OWASP guidelines, evaluating authentication, authorization, data validation, access control, input handling, rate limiting, error handling, and sensitive data protection across REST, GraphQL, and other API architectures.

Secure Code Review

Targeted or full-scope review to identify vulnerable patterns early: auth flows, input validation, crypto misuse, error handling, file handling, secrets, and unsafe frameworks/configs.

Also covered as relevant: thick client behaviors within web app testing, supporting services, and integrated backend components.

Assessment Benefits

  • Hands-on, manual testing that goes beyond scanners to reveal real risk
  • Actionable, prioritized remediation mapped to business impact
  • Language and framework agnostic across modern stacks and architectures
  • Supports secure SDLC with developer-ready fixes and examples
  • Optional retesting to verify remediation and close the loop

We combine static and dynamic analysis with adversary-like techniques to find broken access controls, insecure authentication, session mismanagement, injection flaws, and logic errors across your applications and APIs.

Results are prioritized for business impact and mapped to remediation guidance your developers can use immediately. We partner closely with your team and offer retesting to validate fixes.

Whether you're launching new applications or securing decades-old systems, Vilkas adapts to your architecture and advances your security posture.

Ready to Elevate AppSec?

Let's scope the correct assessment for your applications and APIs, and give your developers clear, actionable fixes.

Application Security — FAQ

Answers about scope, environments, access, timelines, and deliverables.

What does an Application Security assessment include?▾
Manual-first testing of web, mobile, and/or API surfaces covering authentication, authorization, session management, input handling (e.g., Cross-Site Scripting (XSS) and SQL Injection (SQLi), among others), business logic flaws, access controls, crypto, file handling, SSRF/IDOR/RCE risks, and multi-tenant isolation. We also validate rate limits, third-party integrations, and error handling.
Do you test APIs and mobile apps as part of the engagement?▾
Yes. We assess REST/GraphQL/gRPC APIs and mobile apps (iOS/Android) including transport security, token handling, storage protections, and API authorization. We can use Postman collections and OpenAPI specs when available.
Can you review source code (secure code review)?▾
Optionally, yes. We can add a targeted code review to complement the black-box/gray-box test, focusing on high-risk areas (auth flows, crypto, input handling). This is can a very time consuming undertaking and we will be clear on the level of effort required during the scoping phase.
What access and environment are required?▾
Best results come from a staging or pre-production environment that mirrors production, with seeded test data and test accounts for each role (including SSO/OIDC/SAML paths). For APIs, provide environment URLs, tokens/keys, and any collections/schemas.
Will testing disrupt production?▾
We recommend staging/pre-prod to avoid impact. If prod is required, we throttle requests, exclude destructive actions, and coordinate maintenance windows for higher-risk tests.
How long does it take and what do we receive?▾
Typical scopes run 1–2 weeks of testing plus reporting and a live debrief. Larger, more complex applications or applications with 3 or more roles can take longer and will be scoped accordingly. Deliverables include an executive summary, detailed findings with evidence and reproduction steps, and secure coding guidance. Post-remediation validation is always included to validate fixes.
Do you support modern authentication (SSO, OAuth/OIDC, SAML) and multi-tenant apps?▾
Yes. We validate flows for OAuth/OIDC/SAML, session fixation/invalidation, token lifetime/refresh, and tenant isolation issues (e.g., IDOR or cross-tenant access).