The dangers of working in Internet security

Now includes fire bombs:

Russian ATM VXers have firebombed the research lab of an anti-virus firm after its researchers refused to retract reverse engineering analysis of their malware.

The attack followed email threats by the group calling itself the 'Syndicate' to the Moscow company which sold the Shield antivirus product that prevented the gang's malware running in ATMs.

Dr Web says it refused to comply with demands to remove references to ATM malware analysis.

Actual threat or PR stunt?  Explosives seem a little extreme for the marketing department.