When users have been installing Sennheiser's HeadSetup software, little did they know that the software was also installing a root certificate into the Trusted Root CA Certificate store.  To make matters worse, the software was also installing an encrypted version of the certificate's private key that was not as secure as the developers may have thought. Similar to the Lenovo SuperFish fiasco, this certificate and its associated private key, was the same for everyone who installed the particular software. Due to this, it could allow an attacker who was able to decrypt the private key to issue fraudulent certificates under other domain that they have no control over. This would allow them to perform man-in-the-middle attacks to sniff the traffic when a user visits these sites. While these certificate files are deleted when a user uninstalls the HeadSetup software, the trusted root certificate was not removed. This would allow an attacker who had the right private key to continue to perform attacks even when the software was no longer installed on the computer. According to a vulnerability disclosure issued today by security consulting firm Secorvo these certificates were discovered when doing a random check of a computer's Trusted Root Certificate CA store.  Learn more from OUR FORUM.