Since many were surprised about a terrorist attack taking place in Austria I will provide a (very) brief history of Jihadi activities in the country and try to contextualize what we know about the Vienna attack and its perpetrator so far.

A thread: 1) Surprisingly, Austria received until now little attention from researchers and analysts despite the country's long history as a hub for Jihadi activities and having one of the highest numbers of foreign fighters per capita in Europe (comparable to Belgium).

It is sad to see that even colleagues from academia cannot refrain from sharing videos and rumors related to the incident in #Vienna despite repeated requests by the Austrian police not to do so. Really don't understand the purpose. As researchers we should provide analysis based on verified information and empirical evidence and not act irresponsible by risking other people's lives.