RE: Google security concern?
Empty Floatbag <[email protected]>
| Newsgroups | gmane.comp.security.intrusions |
|---|---|
| Message-ID | <[email protected]> |
All, Thanks for the responses. I entirely understand that this is an illegitimate use of a legitmate service provided by Google. For note, I am seeing a similar issue on AltaVista and Yahoo - and Google did seem to remove/blacklist a handful of the sites I sent them last Thursday. Essentially, what I think is that these sites are performing some sort of "cloaking" or other stealth behavior to mask the true content of their site - which is a malicious payload (I am using RealSecure IDS, NetIntercept and other tools to determine the returning streams from these servers). The search-bots are not picking up on the fact that these servers have no "real" content. I am guessing that they are using some sort of scripting to generate thousands of fake pages with fake content on dozens of hostile servers. What content I have seen is very similar to the SPAM language, where it is randomly coherent, yet still gibberish - as well as what looks to be common search phrases/terms, with mis-spellings included (the worst ones). My prediction: the first person who can design a better search-bot that can distinguish fake/malicious content from real content will make millions (if that can even be done)... Just a sampling of the sites that are returning hostile code... oeteg.com wowsukhumvit.com www.itnews21.ru tekona.ru travelfund.ru phinest.ru iyeinteractive.com notebook-smolensk.ru elitmail.ru freedommusic.ru ballballoon.ru styletour.ru clubtornado.ru anapasurfing.ru nomacon-trade.ru kronex.ru www.moscowberlin.ru www.kbe-personal.ru www.a-1trailer.com www.pvr-rpg.ru sad-ajg.ru www.lariadna.ru www.rufiko.ru www.altezo.ru www.panaceamed.ru www.solarmusic.ru www.bummy.ru travel.in.asia.1se.ru Regards, PM --- James C Slora Jr <[email protected]> wrote: > Empty Floatbag wrote Monday, December 27, 2004 13:52 > > > Has anyone else noticed that some seemingly > "normal" > > searches on Google return completely unrelated > sites which > > attempt to compromise a system through the > browser? > > It's an old game, and is very common. Every search > engine has its scoring > criteria - advertisers learn what works for each > engine, and they do > whatever it takes to bring their clients' sites to > the top. What works for > legitimate advertisers works for the adware and > malware people, too. > > I always caution people to do a reality check on any > search engine hits, > rather than trusting the links. Search results are > barely safer than links > in unsolicited email. > > Search engines can't recognize every piece of > potentially hostile code on > pages they index, even if this were part of their > mission. Plus once a page > is indexed, search engines cannot prevent the site's > contents from changing > to hostile code. Google and other search engines do > try to keep the junk out > of their results, but they have a never-ending > challenge in doing this. > Every search method has its strengths and > weaknesses, so similar problems > will always be with us to some extent. > > You asked about caching. I believe that any page can > control whether or not > it is cached in Google - a lot of pages seem to > prevent caching in order to > make sure users get fresh content. Again, what works > for legitimate purposes > can also be abused. > > The problem you reported is one of my most common > incident generators. Users > do a search and click on whatever they find, > thinking it must be safe and > relevant. They are conditioned against popups and > spam, but too often have > blind trust in search results. > > Top enemies for us: > 1. Hostile ads on legitimate ad servers > 2. Legitimate sites with additional hostile intent > (adware on sites that > draw users) > 3. Gamed search engine hits > 4. Legitimate sites that have been hacked > 5. Email with hostile links > > These few things cover pretty much all the > non-viral, non-network malware we > encounter. We see a lot of overlap between these > categories. The most common > payload is a download trojan that usually installs > adware. Sometimes there > are attempts to install botnets and other kinds of > trojans. These vehicles > have a much higher infection success rate against us > than worms, skiddies, > and botnet attacks - because they spread through end > user content that we > allow into our network by design. We do many things > to mitigate these > threats, but none is 100% effective. > > Search engine hits are an obvious enabler for most > of the other types of > threats on our list. I venture to guess that click > rates on gamed search > results are thousands of times better than click > rates on spam. > > This stuff is pretty mainstream - presumably because > it generates revenue. > Over the past year, I've found several adware > packages promoting what would > normally be considered legitimate businesses. It's > hard to know whether > these businesses knew that they were buying into the > hostile software > market, or if they thought they were just buying > legitimate advertising. > > _______________________________________________ > Intrusions mailing list > [email protected] > http://www.dshield.org/mailman/listinfo/intrusions > __________________________________ Do you Yahoo!? Yahoo! Mail - Easier than ever with enhanced search. Learn more. http://info.mail.yahoo.com/mail_250 _______________________________________________ Intrusions mailing list [email protected] http://www.dshield.org/mailman/listinfo/intrusions