computer virus

Published October 8, 2010 | By Bman

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antivirus vendors issued warnings that Unix-like systems could fall prey to viruses just like Windows.[20] The Bliss virus may be considered characteristic of viruses – as opposed to worms – on Unix systems. Bliss requires that the user run it explicitly (so it is a trojan), and it can only infect programs that the user has the access to modify. Unlike Windows users, most Unix users do not log in as an administrator user except to install or configure software; as a result, even if a user ran the virus, it could not harm their operating system. The Bliss virus never became widespread, and remains chiefly a research curiosity. Its creator later posted the source code to Usenet, allowing researchers to see how it worked.[21]

The role of software development

Because software is often designed with security features to prevent unauthorized use of system resources,