Almost all activities on the Internet leave traces, which, when combined accordingly, can help identify an induvial with sufficient certainty. One of the main reasons for this is that the technical foundation of the Internet dates back to a time when privacy and data protection were not relevant. However, most components involved are considered as critical infrastructure. Thus, they cannot simply be replaced. As a result, additional measures need to be taken, in order to keep one’s identity secret and to leave as little traces as possible. Especially on application level, a lot of traces are left.