Among the Host of Troubles attacks we found, cache poisoning attacks that target transparent caches are the most serious threat against current Internet (See demos). Our measurement study shows that around 97% of users served by a transparent cache are subject to the attacks.

With this online checker, we provide a tool for you to automatically evaluate whether you are vulnerable to the cache poisoning attacks. To complete this online test, you need to make sure Flash is enabled in your browser.


Please click the button to start test

What should I do if a vulnerable transparent cache is detected?

If you are a client user...
Contact your Internet Service Provider(ISP) immediately, and ask them to fix it.
If you are a ISP operator or developer...
Upgrade the transparent cache software to comply RFC7230.[Detail mitigation]