In many cases, the research of an app’s internal structure can be narrowed down to monitoring its traffic. Just a few years ago, a major share of the traffic was transmitted via the plain, easily interceptable HTTP protocol. By now, HTTPS has become the standard in most applications as a part of the defense mechanisms against eavesdropping. Today, I will try to explain what the different defense approaches have in common and whether their common component can be used to create a universal HTTPS interception technique.