This document discusses 4 key things to know before investigating on the internet: 1. A brief history of the internet including its origins in 1969 and growth over time. 2. Differences between objective evidence gathering and other purposes for investigating online. 3. Basic concepts including protocols, IP addresses, domains, URLs, DNS, and WHOIS databases. 4. Internet management organizations like ICANN and IANA that oversee core internet resources.

1. 4 thingsyouneedtoknowbeforeinvestigatingonthe Internet Julio Cortés del Olmo

2. 1 Whatis internet?

3. “It is a network of networks that consists of millions of private, public, academic, business, and government networks of local to global scope that are linked by a broad array of electronic and optical networking technologies.” Source: Wikipedia

4. “The largest system of connected computers around the world which allows people to share information and communicate with each other.” Pascal Blesson- DGCCRF

5. How old is Internet? 15 years? 20 years? 40 years?

6. History 40 years old 1969 ARPANET

7. 1989 Html, URL, AOL 1999 NAPSTER

8. 2002 Number of users 500 million 2009 Social networks, 1 billion users

10. Viruses, scams, spies… the Dark Side

14. Will internet ever be safe while security is in the hands of users?

15. 2 Differences

16. Objective: gather evidence

17. 3 Basic Concepts

18. What is a Protocol? HTTP: Hyper Text File Protocol Computer Language

19. What is an IP address? IP= Internet Protocol NumericLabel 66.249.71.123 Computer address

20. Are IP addresses permanent? 1 website = 1 IP 1 user / 1 IP??

21. IP, date and time

22. What is an internet domain? pedrogarcia.es

23. What is a URL? http://www.pedrogarcia.es

24. What is the www?

25. What is DNS? Domain Name System 66.249.71.123 www.pedrogarcia.es

26. What is a reverse DNS? 66.249.71.123www.pedrogarcia.es www.comerbien.es www.visitarwashington.es

27. What is a WHOIS database?

30. 4 Internet management

31. ICANN Internet Corporation for Assigned Names and Numbers

32. IANA Internet Assigned Numbers Authority

33. “Everything in this world is relative, my dear Watson.” Sherlock Holmes – The Dying Detective

34. 4 thingsyouneedtoknowbeforeinvestigatingonthe Internet Julio Cortés del Olmo