2. The Internet
“Have you heard of this new thing called
the internet? It's giving people new
expectations. It's allowing them to
become their own expert. Knowledge lies
anxious at their fingertips”
Roy H. Williams
4. Open Source searching
• Open source searching refers to any site that,
does not need a password or log in to enter.
• The more common open source searches relate
to search engines.
5. Deep Web Searching
• The term Deep Web refers to information found
on Web sites that is hidden or generally
inaccessible through traditional search methods
6. Deep Web searching
• Searching social networking sites and newsgroups/forums
is an example of deep web searching.
• The information would not be found from searching search
engines.
• It is important to remember that there is a lot of data that
can only be found through deep web searching
• To search the deep web you need to locate online
databases and forums and search them individually
7. Search Engines
• When you search the web using a search engine, you are
always searching a somewhat stale copy of the real web
page. When you click on links provided in a search engine's
search results, you retrieve from the server the current
version of the page.
• Search engine databases are selected and built by
computer robot programs called spiders. These "crawl" the
web, finding pages for potential inclusion by following the
links in the pages they already have in their database (i.e.,
already "know about").
9. Search engines
• If a web page is never linked to in any other page, search engine
spiders cannot find it. The only way a brand new page - one that
no other page has ever linked to - can get into a search engine is
for its URL to be sent by some human to the search engine
companies as a request that the new page be included. All search
engine companies offer ways to do this.
• Many web pages are excluded from most search engines by
policy. The contents of most of the searchable databases
mounted on the web, such as library catalogs and article
databases, are excluded because search engine spiders cannot
access them. All this material is referred to as the Invisible web-
what you don't see in search engine results.
10.
11.
12. One Enough??
• Less than half the searchable Web is fully searchable in Google.
• The percent of total results unique to one search engine was
established to be 88.3 percent.
• The percent of total results shared by any two search engines
was established to be 8.9 percent.
• The percent of total results shared by three search engines was
established to be 2.2 percent.
• The percent of total results shared by the top four search engines
was established to be 0.6 percent.
13. One Enough??
• The majority of first page results are unique:
• On average, 69.6 percent of Google first page search results
were unique to Google.
• On average, 79.4 percent of Yahoo! first page search results
were unique to Yahoo!
• On average, 80.1 percent of Live first page search results were
unique to Live.
• On average, 75.0 percent Ask first page search results were
unique to Ask.
15. The Top 9 Social Networking Sites by internet visits
Rank Name Domain Market Share %
1 Facebook www.facebook.com 37.7
2 Bebo www.bebo.com 28
3 Myspace www.myspace.com 18.97
4 Faceparty www.faceparty.com 2.01
5 Windows Live Space Spaces.live.com 1.99
6 BBC h2g2 www.bbc.co.uk/dna 1.25
7 Stumble Upon www.stumbleupon.com 1.19
8 Club Penguin www.clubpenguin.com 1.05
9 Friends Reunited www.friendsreunited.co.uk 0.88
17. I.P Addresses
• All computers across the internet are assigned a
unique identifier called an IP address. They are
used like street addresses so other computers
can find them. An IP address could look
something like this: 87.242.211.23.
• Websites can log any IP addresses that look at
their site.
• IP addresses can then be traced back to the
server.
19. I.P
• They could then Google or yahoo “Halliwells” and
“Manchester” to find our address.
• IP Address finder:
• http://www.ip-adress.com/
20. Search Results
• Webmasters can even trace, what search term
you used to find their website.
• For example, if you searched for fraudulent
people in Liverpool and then clicked on one of
the search results, the owner of the site found in
the search could see that you were searching for
fraudulent people in Liverpool.
21. Search Results
• To avoid this, most search results provide the
URL of the results. You can copy and paste this
in to a new web browser.
22. Cloaking
• There are many web based proxys that claim to
hide your IP address.
• These sites are untested- and this must be
considered while using them.
• The websites records information of who blocked
who, to look at what.
• http://www.the-cloak.com/anonymous-surfing-
home.html
23. Tracing Emails
• You can trace a IP address of the server the email was sent
from.
• Web mail tracing would reveal the IP address of the web
mail server. e.g. Hotmail.
• The IP address is hidden in the internet header of the
email.
• You can either search through the headers to find the IP
address or you can paste the header on to an online
engine and it will find it for you.
• http://www.ip2location.com/emailtracer.aspx
