| Summary: | The author looks at a range of risks and potential negative events related to computer systems, calling for a greater effort to anticipate, prevent, and prepare for them. He discusses potential problems including attacks on the cryptographic systems used for computer security such as public-key cryptography; vulnerabilities in computer security related to the needs of government mass surveillance; and vulnerabilities related to the role of computers and computer networks in critical infrastructure such as water supply and electric power systems. Other topics include privacy and anonymity on the Internet, the use of information technology in health care, and climate change.
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