EEX continuously improves the security of the products, including the Emission Spot Market Auction System (M7A). The communication between web browser and M7 Auction System is encrypted using HTTPS. Some encryption methods, that were considered secure in the past, are not considered secure anymore. We decided to configure the Apache web server using only those encryption methods, that are considered secure today. It may cause the application to be inaccessible when using some older web browsers.