Not only human agents, i.e., attackers, can bring about
these health and safety impacts; for example, malware
can infect a system with a critical safety role, such as a
navigation system in an airplane, an automobile braking
system or a smoke sensor. Although it was later determined
to not be the sole cause, a malware infection of an airplane
monitoring system may have been a contributory factor in
the crash of Spanair flight 5022 in 2008.