By running HTTPS only, no-one can inspect the traffic between the browser and the webserver using a man-in-the-middle attack or something similar. HTTPS exclusively is the only way to roll. Here, I'm not talking about adding HTTPS as an alternative to HTTP. So, how do we make sure that no-one but our website gets access to that cookie? The first step is to make sure the website is running HTTPS. Danger Will Robinson! Mark cookies as Secure ASPXAUTH cookie, he/she would now be able to hijack that session. If a hacker somehow gets the value of the. The value of the cookie contains an encrypted string that can be used to authenticate the user on subsequent requests. This is a cookie returned by Forms Authentication once the user is signed in. You have probably already seen a cookie named. Most authentication systems for ASP.NET and Core use an authentication cookie for your application to tell the web server the client is successfully signed in. The easiest way to understand the problems with XSS and cookies is by example. The one I want to present to you today is to take advantage of the cookies used by your site.

This is not a blog post about XSS, but multiple bad things can happen if anyone succeeds in injecting code into your site.

You've already heard about cross-site scripting (XSS), right? XSS is a situation where a hacker can inject malicious scripts into your website. Check out Improving security in ASP.NET MVC using custom headers, Content-Security-Policy in ASP.NET MVC, and Storing Content-Security-Policy reports in elmah.io for more security-related posts. This is the fourth post in a series about ASP.NET security.

Npm config set to non secure http