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Common Gateway Interface - CGI


CGI is a programming method of passing information between a Web site and an applications programme and back again. CGI applications can be written using a variety of programming languages e.g. Perl (from UNIX), C, C++, Visual Basic and others.

There are significant security risks in implementing CGI scripts using scripting languages such as Perl, because, although extremely powerful for the manipulating and parsing of text (say from user input), they also permit an array of low level 'system' commands which could be exploited for malicious purposes.

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