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Security risk cookies: What you need to know now!
Delegation from the Saale-Holzland district visits Erlangen-Höchstadt on August 13, 2025. Important insights and perspectives.
Security risk cookies: What you need to know now!
In today's digital world, cookies play a crucial role, and not just for the smooth operation of websites. Today we'll look at what steps are necessary to ensure the security of session cookies and thus optimize the user experience. A notable example of this can be found in the information provided by Erlangen-Höchstadt, which explains the necessity and functionality of cookies.
Cookies are essential for the functionality of most websites. As reported, they usually trigger user reactions, such as when adjusting privacy settings, logging in or filling out forms. It is important to note that these essential cookies do not store any personal data. Some examples of such cookies are the ASP.NET_SessionId, which remains until the browser session is ended, and the __RequestVerificationToken, which is also temporary.
The importance of security
But how safe are these cookies really? In a post by Microsoft Note that the default session ID name in ASP.NET should not only be generated, but also its length should be chosen carefully. While at least 128 bits is a good approach, randomness is also essential to avoid predictability.
It is recommended not to store critical information such as passwords in cookies. Instead, a reference to a secure storage location should be used. It is also recommended to use HTTPS for all applications that handle sensitive data.
Cookie best practices
To further strengthen security, the community also offers some best practices. Cookies should be created with the Secure and HttpOnly attributes to protect them from unwanted access. You can easily enable these security features in the Web.config file for ASP.NET applications, such as Thomas Ardal describes.
- Verwenden Sie Secure für Cookies, die sensible Daten enthalten.
- Setzen Sie HttpOnly, damit Cookies nicht über JavaScript zugreifbar sind.
- Implementieren Sie das SameSite-Attribut, um Cookies auf Erstanbieter-Anfragen zu beschränken.
Especially in times when cybercrime is a big issue, it becomes clear that with a good hand and adherence to proven security practices, many risks can be minimized. Encrypting information in cookies and setting shorter expiry times are steps in the right direction. A pro tip is to disable TRACE and TRACK requests in Web.config to close potential security holes.
In summary, while there are some challenges to ensuring cookie security, with the right knowledge and best practices, users and developers alike can benefit. As the saying goes, “Prevention is better than cure.”