Belgian Terrorists caught on possession of wiping software?

An article in Datanews (dutch only) today reports on the police arresting four ex-CCC members on two facts:

1. They were linked to a terrorist organization in Italy
2. They had ‘encoding’ software on their PC’s to securely wipe hard drives. (most likely the reporter meant wiping instead of encoding.)

On the first fact, I can certainly agree but with regards to the second fact, I did not know it was illegal in Belgium to have this kind of software installed on your PC.

I for one have Truecrypt as encryption software and Eraser as DoD compliant erasing software installed on my laptop. Am I a terrorist now?