A company can spend hundreds of thousands of dollars on firewalls intrusion detection systems and encryption and other security technologies but if an attacker can call one trusted person within the company and that person complies and if the attacker gets in then all that money spent on technology is essentially wasted.
The mysteriousness and mystique of space is such that science fiction attempts to tantalize you by telling you a story that could possibly be out there and that's the appeal of science fiction.