This is standard acces to document request protocol across Europe. You are not going to make your staff targets of the internet mob (see Trump and the names of jurors). You can deduce these were likely actually low level staff (contrary to what the article claims) as names of actual high level staff would normally not be blacked out, although I don't know Europol, as a police body they might have different safety protocols.
Comments
This is standard acces to document request protocol across Europe. You are not going to make your staff targets of the internet mob (see Trump and the names of jurors). You can deduce these were likely actually low level staff (contrary to what the article claims) as names of actual high level staff would normally not be blacked out, although I don't know Europol, as a police body they might have different safety protocols.