Android / iOS

Mobile Application Security Review

Android and iOS testing that treats the client, APIs, identity systems, and connected workflows as one attack surface.

Discuss your mobile applicationExplore the review
Review the client and the services it relies on.

Built around your system

Android or iOS clients whose security depends on backend enforcement.

How we work together

Client and API testing

Check the app and the services behind it.

A mobile finding often begins on the device and becomes meaningful in an API or web workflow. Testing compares roles and account states and validates whether server controls hold when normal interface assumptions are removed.

Areas we investigate

  1. 01

    Authentication, tokens, account recovery, and account-state changes

  2. 02

    API traffic, authorization boundaries, hidden endpoints, and mobile-only workflows

  3. 03

    Local storage, logs, cached data, files, secrets, and screenshots

  4. 04

    Client-side controls that can be bypassed, replayed, or modified

  5. 05

    Deep links, web views, exported components, transport, and relevant third parties

What to bring to the first conversation
  • Authorized builds or store links
  • Test accounts for relevant roles
  • API documentation when available
  • Supported devices, OS versions, and environment constraints
Full preparation guide

What you leave with

A clear result.
A practical next step.

Clear evidence of what the application trusts, what the backend enforces, and whether a modified client can reach hidden behavior.

See a sample finding
Engagement deliverables
  1. 01Risk-ranked, reproducible findings
  2. 02Affected versions, roles, and workflow context
  3. 03Client- and API-side evidence
  4. 04Remediation guidance for both mobile and backend components
Prepared for your team. Reviewed by Garrett.

The work, in brief

  1. 01

    Observe client behavior

    Storage, transport, and local controls.

  2. 02

    Validate the API boundary

    Client assumptions tested against the service.

  3. 03

    Document reachable impact

    Evidence tied to the affected control.

Further reading

See the thinking behind the work.

Published research and practical guidance for this review.

Android / iOS

Discuss your mobile application.

Security testing

Share the system, your main concern, and your timeline. I’ll help define a useful scope and explain what the engagement would include.

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