© Nihad A. Hassan, Rami Hijazi 2018
Nihad A. Hassan and Rami HijaziOpen Source Intelligence Methods and Toolshttps://doi.org/10.1007/978-1-4842-3213-2_4

4. Search Engine Techniques

Nihad A. Hassan1  and Rami Hijazi2
New York, USA
Mississauga, Ontario, Canada

The number of Internet users is increasing steadily, as is the number of active websites. According to Netcraft’s January 2017 Web Server Survey, there are 1,800,047,111 billion websites. i The number of pages on these websites changes continually according to many factors. Google Inside Search estimates that there are more than 130 trillion web pages discovered by Google; about 50 billion of them have been included in Google’s searchable index as of October 2017. ii Do not forget that ...

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