From day to day, private security personnel operate outside the chain of command and are not subject to military discipline.

ECONOMIST: An unregulated and unsupervised semi-covert world

"Ensuring accountability for any failure to comply with international law is also difficult when drone attacks are conducted outside the military chain of command", she added.

BBC: US drone strikes 'raise questions' - UN's Navi Pillay

That raises the possibility, at least, that secret data may have been captured by the keylogger, and then transmitted over the public internet to someone outside the military chain of command.

CNN: Computer virus hits U.S. drone fleet