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Check for NULL ciphers

If the result is positive, there is no need for further action. If the result is negative, please read the following instructions.

Result positive Insecure NULL ciphers not supported
Result negativ Insecure NULL ciphers supported
Description Your web server/website is configured to allow unencrypted voice transmission via a secure channel. This makes you vulnerable to man-in-the-middle-attacks.
Background The term cipher suite stands for a cryptographic protocol that contains the key exchange method, the signature method, the encryption, and cryptographic hash function. This combination of cryptographic components ensures that there is a secure connection for the communication between two parties, for example your browser and a web server or website. In the TLS protocol (Transport Layer Security), the cipher suite determines which algorithms are used to establish a secure data connection.
Consequence If no encryption is used, attackers can easily decode the communication between your website and your customer's browser. In this way, information such as passwords, data entered in forms, or credit card information can be intercepted and misused for criminal purposes. This type of attack is called man-in-the-middle-attack.
Solution/Tips If Insecure NULL ciphers supported was reported, deactivate support for NULL encryption methods.