There are numerous twitter feeds entertained by various actors of CASA and IT Security in Bochum at large:
Horst Görtz Institute for IT Security
Bochum Crypto - Chair for Cryptography
Prof. Eike Kiltz - Chair for Cryptography
Copyright: RUB, Michael Schwettmann
CASA in Social Media
Moreover, certain lectures and information about IT Security can be accesses online via youtube:
