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What’s a cookie? How do I protect myself on the web? And most importantly: What happens if a lorry runs over my laptop?

For things that you’ve always wanted to know about the web but were afraid to ask, read on.




Browser Cookies

or, thanks for the memories

Cookie seems like an unlikely name for a piece of technology, but cookies play a key role in providing functionality that Internet users may want from websites – a memory of their visits, in the past or in progress.

A cookie is a small piece of text sent to your browser by a website that you visit. It contains information about your visit that you may want the site to remember, such as your preferred language and other settings. The browser stores this data and pulls it out the next time that you visit the site, to make the next trip easier and more personalised. If you

visit a film website and indicate that you’re most interested in comedies, for instance, the cookies sent by the website can remember this, so you may see comedies displayed at the start of your next visit.

Online shopping baskets also use cookies. As you browse for DVDs on that film shopping site, for instance, you may notice that you can add them to your shopping basket without



You can pick up from where you left off the last time, or start at the beginning. Do you want to:


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Print the book (in Letter or A4 size only)

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Download the book in PDF. Size: 3.3MB


Very Special Thanks To

Brian Rakowski, Ian Fette, Chris DiBona, Alex Russell, Erik Kay, Jim Roskind, Mike Belshe, Dimitri Glazkov, Henry Bridge, Gregor Hochmuth, Jeffrey Chang, Mark Larson, Aaron Boodman, Wieland Holfelder, Jochen Eisinger, Bernhard Bauer, Adam Barth, Cory Ferreria, Erik Arvidsson, John Abd-Malek, Carlos Pizano, Justin Schuh, Wan-Teh Chang, Vangelis Kokkevis, Mike Jazayeri, Brad Chen, Darin Fisher, Johanna Wittig, Maxim Lobanov, Marion Fabing Nicolas, Jana Vorechovska, Daniele De Santis, Laura van Nigtevegt, Wojtek Cyprys, Dudley Carr, Richard Rabbat, Ji Lee, Glen Murphy, Valdean Klump, Aaron Koblin, Paul Irish, John Fu, Chris Wright, Sarah Nahm, Christos Apartoglou, Meredith Papp, Eric Antonow, Eitan Bencuya, Jay Nancarrow, Ben Lee, Gina Weakley, Linus Upson, Sundar Pichai & The Google Chrome Team

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