Abstract The constant access to the internet is today part of our life, both in work and family environments we are forced to be connected. In 2020, the arrival and rapid spread of covid-19 have shown us this situation more firmly. Unfortunately, society continues to postpone raising awareness on cybersecurity issues at all levels. This is how today we see the use of obsolete security protocols in different environments. In this document, we focus on identifying the use of the WEP protocol in a sector of the city of Bogotá, as well as the common elements of its users, and demonstrating how with free software it is possible to break the security provided by this network protocol.