A legitimate application that's supposed to help users access censored or blocked websites was secretly bundled with Android spyware and made available for download on third-party marketplaces 
last year.

The app, known as Psiphon and packaged as com.psiphon3, has been safely downloaded from the official Google Play Store over 50 million times. But users who attained the app through unofficial channels may have downloaded a sabotaged version that infects them with Triout, a malware framework that introduces extensive surveillance capabilities.

Last August, researchers from Bitdefender reported its initial discovery of Triout, which at the time was found bundled with an adult content app.

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