Android uses this signature to ensure that updates for an app are coming from the same original source, protecting your data from being accessed by a malicious version of the same app.
Every Android app must be signed with a certificate before it can be installed. This signature verifies that the app comes from a specific developer and has not been tampered with.
Downloading a involves obtaining an Android installation package for a graphic design app that has been digitally "signed" by a developer. While an APK is the standard format for Android apps, downloading it from third-party sites instead of the Google Play Store carries significant security risks. Understanding "Signed" APKs
Downloading from unofficial sources is approximately to result in a harmful application being installed on your device.
