WhatsApp and Telegram media files aren?t so secure after they reach your phone
Companies, agencies, institutions, etc
Symantec
WhatsApp
Telegram
Media File Jacking
Android
vulnerabilities.”Command Line
People
development.”Still
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Android
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Summary
Today, researchers from Symantec explain how hackers could use a malicious app to subtly alter media files sent through the services.On Android, apps can choose to save media, like images and audio files, through either internal storage that’s only accessible through the app, or external storage which is more widely available to other apps.
As said here by Colin Lecher