Matt Payne - Google hacking CSF-Jun2005.pdf - Bezpieczeństwo - Kedzio1992

Google Hacking 101

Edited by Matt Payne, CISSP

15 June 2005

http://MattPayne.org/talks/gh

Outline

• Google Bombing

• Schneier in Secrets and Lies

– Attack at a distance

– Emergent behavior

– Automation

• Google as a mirror

• “Interesting Searches”

– Software versions

– Passwords, credit card numbers, ISOs

• CGI Scanning

– Vulnerable software

• Defense against Google Hacking

Google Bombing

Google Hacking

• http://en.wikipedia.org/wiki/Google_bomb

• A Google bomb or Google wash is an

attempt to influence the ranking of a given

site in results returned by the Google

search engine. Due to the way that

Google's Page Rank algorithm works, a

website will be ranked higher if the sites that

link to that page all use consistent anchor

text.

So What Determines Page

Relevance and Rating?

• Exact Phrase: are your keywords found as

an exact phrase in any pages?

• Adjacency: how close are your keywords to

each other?

• Weighting: how many times do the

keywords appear in the page?

• PageRank/Links: How many links point to

the page? How many links are actually in

the page?

From: Google 201, Advanced Googology - Patrick Crispen, CSU

Equation: (Exact Phrase Hit)+(AdjacencyFactor)+(Weight) * (PageRank/Links)

Simply Put

• “Google allows for a great deal of target

reconnaissance that results in little or no

exposure for the attacker.” – Johnny Long

• Using Google as a “mirror” searches find:

– Google searches for Credit Card and SS #s

– Google searches for passwords

– CGI (active content) scanning

Matt Payne - Google hacking CSF-Jun2005.pdf

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