# Sideloading The Talsec SDK evaluates an application's source to verify whether it was delivered through a trusted, official channel or sideloaded. Because Android and iOS handle app distribution fundamentally differently, the SDK utilizes platform-specific detection mechanisms. *** ## Definition of Sideloading In the context of Talsec threat evaluation, sideloading refers to any application installation that bypasses a trusted, official store client. * **Android**: Encompasses APKs launched manually via file managers, browsers, or chat applications; installations pushed via ADB commands (`adb install`); emulator drag-and-drop; and third-party unofficial repositories. * **iOS**: Encompasses applications installed via Xcode, AltStore, Enterprise MDM distribution, or any external tool that modifies the binary or its provisioning profile outside of the official Apple ecosystem. {% hint style="info" %} **The Trusted Baseline** Talsec natively recognizes **Google Play** and **Huawei AppGallery** as the default trusted sources for Android (with support for custom store configurations), while the **Apple App Store** and **TestFlight** serve as the strict, non-configurable trusted baseline for iOS. {% endhint %} --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.talsec.app/appsec-articles/glossary/sideloading.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.