🔐 Why Your Deep Links Might Be a Backdoor

Deep links feel like simple navigation — but security-wise, they’re public entry points into your app.

If your deep links:

• Open privileged screens
• Auto-execute actions
• Trust query parameters
• Load URLs into WebViews
• Or assume “users can only reach here internally”

…they can quietly turn into backdoors.

In this article, I break down a production-grade approach to securing deep links across Android and backend systems, including:

• The real threat model (intent spoofing, parameter tampering, link hijacking)
• Why verified HTTPS App Links matter
• A gatekeeper DeepLinkActivity pattern
• Backend protections like signed, short-lived links and one-time tokens
• Logging, rate limiting, and security testing strategies

💡 Key takeaway:

Deep links aren’t just navigation — they’re exposed interfaces and must be protected like APIs.

👉 Read the full article on Medium:

https://medium.com/@vaibhav.shakya786/why-your-deep-links-might-be-a-backdoor-bbc98ad8901c

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