Clicking one shortened link can lead to a full account takeover. Learn how deep links leak tokens and how to protect your device from mobile phishing.

The vulnerability happens when the app doesn't check where it’s sending that token; if an attacker uses a deep link to tell the app to open a URL pointing to their server, the app effectively hands over the keys to the kingdom.
How to use shortened urls, and hack anyones accounts without them knowing, how to do all thia free on android with nothing but free websites, (from the perspective)


Creato da alumni della Columbia University a San Francisco
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Creato da alumni della Columbia University a San Francisco

Nia: You know, Jackson, I was looking at my phone today and realized how many links we click without a second thought. It’s almost second nature, right? But I saw this wild security write-up from just a few months ago about how a single tap on a shortened URL can actually lead to a full account takeover on an Android device.
Jackson: It’s incredible how much power is packed into one link. Most people don't realize that these deep links—the ones that automatically open an app instead of a browser—can be manipulated to silently append your private authentication tokens to the URL.
Nia: Exactly! And the craziest part is that an attacker can set this up using nothing but free websites and an Android phone. It’s a complete "one-click" exploit that happens in under a second.
Jackson: Right, and since these vulnerabilities often stem from how apps handle "browsable" activities, it’s a massive surface for exploitation. Let’s break down the mechanics of how these redirects actually work.