Work with tech group to produce a guide or info about safely joining telegram
telegram security report http://blog.segu-info.com.ar/2017/09/informe-de-debilidades-de-telegram.html
and suggestions for telegram setup based on this: (spanish) https://medium.com/@naxito/c%C3%B3mo-configurar-telegram-para-evitar-las-vulnerabilidades-halladas-por-el-cert-b58b5e52aaa5