Errors, Accidents, & Natural
Hazards
•Human errors
•Humans often are not good at assessing
their own information
•Human emotions affect performance;
people get frustrated
•Human perceptions are slower than the equipment
•Information overload
may also be a problem
Procedural errors
•When people fail to follow established
procedures, errors can occur
Software errors
•Software bug: an error in a program that
causes it not to work properly
“Dirty data” problems
•Incomplete, outdated, or otherwise
inaccurate
data
Electromechanical problems
•Mechanical systems can wear out or become
damaged
•They can also be badly designed or
constructed
•Power failures and surges can damage equipment
•
Natural hazards
can lead to disasters
Computer Crimes
•Two types of computer crime:
•Illegal act perpetrated against computers
or telecommunications (computer is the
target)
•Use of computers or telecommunications to
accomplish an illegal act (computer is the tool)
Computer Crimes (continued)
•Theft of hardware
•Theft of software
•Theft of intellectual
property (piracy)
•Theft of time and services
•Theft of information
(e.g., medical info, credit card info)
•Internet-related fraud (e.g., Wi-Fi
phishing, or evil twin attack)
•Crimes of malice: crashing entire systems
•Attacks on power-control systems and
attacks
on the Internet