lecture25_inf201_fall2010

lecture25_inf201_fall2010 - IINF201 (F 2009) IINF201 (Fall...

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IINF201 (Fall 2009) Intro. to Info. Technologies Department of Informatics University at Albany – SUNY Adapted from Choi, Spring 2009
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hy Computer Security? Why Computer Security? Video Clip • The past decade has seen an explosion in the concern for the security of information – Malicious codes (viruses, worms, etc.) caused over $28 billion in economic losses in 2003, and increased over $75 billion by 2008 • Jobs and salaries for technology professionals have lessened in recent years. BUT … • Security specialists markets are expanding ! – “ Full-time information security professionals will rise lmost 14% per year around the world going past 2 1 almost 14% per year around the world, going past 2.1 million in 2008” (IDC report)
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hy Computer Security (cont’d) Why Computer Security (cont d) ternet attacks are increasing in frequency, Internet attacks are increasing in frequency, severity and sophistication • Denial of service (DoS) attacks () – Cost $1.2 billion in 2000 – 1999 CSI/FBI survey 32% of respondents detected DoS attacks directed to their systems – Thousands of attacks per week in 2001 – Yahoo, Amazon, eBay, Microsoft, White House, etc., attacked ideo Clip Video Clip
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he History of Computing The History of Computing • For a long time, security was largely ignored in the community – The computer industry was in “survival mode”, struggling to overcome technological and economic hurdles – As a result, a lot of corners were cut and many compromises made – There was lots of theory, and even examples of systems built with very good security, but were largely ignored or unsuccessful • E.g., ADA language vs. C
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omputing Today is Very Different Computing Today is Very Different •C o m puters today are far from “survival mode” – Performance is abundant and the cost is very cheap – As a result, computers now ubiquitous at every facet of society ternet Internet – Computers are all connected and interdependent – This codependency magnifies the effects of any failures omputing today is very homogeneous Computing today is very homogeneous. – A single architecture and a handful of OS dominates • In biology, homogeneous populations are in danger – A single disease or virus can wipe them out overnight because they all share the same weakness – The disease only needs a vector to travel among hosts
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he Definition of Computer Security The Definition of Computer Security Security is a state of well-being of information and
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lecture25_inf201_fall2010 - IINF201 (F 2009) IINF201 (Fall...

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