My ASP.NET web application did not make use of the HTTP strict transport security (HSTS) mechanism.

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Hi

My ASP.NET Web application did not make use of the HTTP Strict Transport Security (HSTS) mechanism.

This could potentially expose users to Man in the Middle (MitM) attacks.

When a web application uses HSTS, it specifies that users must connect using HTTPS and that communication should cease if there are any errors in the certificate chain.

In this way, users are prevented from clicking through certificate errors or accessing the application over a compromised channel.

How to implement HSTS

How Can I Prevent exposing users to Man in the Middle (MitM) attacks?

What I have tried:

Tried to add HSTS to a web application by setting the 'Strict-Transport-Security' header in all server responses.

Posted 3-Jul-17 9:30am

Yugesh Naid

Updated 3-Jul-17 12:34pm

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Bryian Tan · Answer 1 · 2017-07-03T12:34:00

This article provide some guidance on how to implement the mentioned security policy which enforces all the communications to send over HTTPS.

How to enable HTTP Strict Transport Security (HSTS) in IIS7+ - Scott Hanselman[^]

Here additional reading for you if you interested on how to implement HTTP Public Key Pinning (HPKP) security policy/control.
Insecure Transport – Missing Public Key Pinning[^]