5. Browser and mobile security

5.1 Web page complexity

For the general public, and for the majority of computer users in general, the Web browser has become the universal access device, not only to the Internet and systems such as messaging and social networking, but also to business management applications, research data, analysis software for various scientific disciplines, network control, etc. Browser reliability is therefore a crucial safety issue, while its functional richness and complexity continue to grow. Browser reliability is therefore a crucial security issue, while the functional richness and complexity of browsers continues to grow.

When the browser was invented (NCSA Mosaic in 1993), its operation could be represented by the diagram in figure