Overview
SSL pinning, more accurately TLS certificate pinning, is a mobile security control that restricts which certificates or public keys an app will trust for backend communication.
Pinning can reduce the risk of unwanted traffic interception, but it also changes how testers analyze mobile API traffic. A review should consider where trust checks are implemented, whether they are applied consistently, and whether the app still protects sensitive data if client-side controls are modified.
In this lab, you practice reasoning about certificate trust in an Android application and understanding how SSL pinning affects mobile traffic analysis workflows.
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