Is Google the hacker’s best friend?

Google, the world’s most popular search engine, is one of the handiest tools for hackers, according to one security expert.


Google’s ability to record Internet sites’ content can be used to pinpoint those with weak security, Johnny Long, a security researcher and computer scientist for Computer Security Corp. told attendees at the Black Hat Security Briefings. Though the technique is not new, well-crafted searches turned up so many sites with vulnerabilities that even jaded researchers laughed during the session.


“It is an old dog with new tricks,” Long said. “It never ceases to amaze people, all the vulnerabilities out there.”


By searching for default server page titles, for example, an attacker can find easily exploitable servers. Applications left in default modes can also be found by searching for error pages generated by the software. And searching for specific file names can pinpoint vulnerable servers connected to the Internet.


“It is the first step to finding vulnerable targets,” Long said.


A simple search for the log-in page of Microsoft’s Web server software, the Internet Information Server, turned up 11,300 sites on the Internet that exposed the page to the public. Gathering log-in information for poorly configured databases is also easy, he said.


The exploitation of Google’s in-depth searching capabilities underscores how software with no malicious motive can be used to help online intruders. The recent MyDoom-O virus hammered Google and other search engines with searches from infected PCs for additional e-mail addresses to which the program could send itself. Security researchers have also theorised that Google and other search engines could be used as a carrier of malicious code.


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