Final answer:
Data theft is a greater risk off site than when a computer is used in a protected office environment.
Step-by-step explanation:
The greater risk 'off site' than when a computer is used in a protected office environment is data theft. While all the options listed (malware attacks, physical damage, network outages) are potential risks, data theft poses a greater threat outside of a protected office environment due to the increased vulnerability of data being accessed and stolen.