Showing posts with label Google. Show all posts
Showing posts with label Google. Show all posts

10 May 2008

Security flaw turns Gmail into open-relay server

A recent study by Information Security Research Team(INSERT) has revealed flaws in Google's e-mail service turning Gmail into a highly effective spam machine. According to the INSERT, Gmail is susceptible to a man-in-the-middle attack that allows a spammer to send thousands of bulk e-mails through Google's SMTP service. Despite the fact that Google has identity fraud protection mechanisms and a limit of 500-messages on bulk e-mail but still allows spammers to send a potentially unlimited number of messages .The attack specifically exploits Gmail’s email forwarding functionality.

Situation seems even worse when we consider the fact that E-mail that originates from Google, are well-regarded by both Yahoo and Hotmail. If you try to send spam mails directly to Yahoo and Hotmail from a blacklisted IP, mails don't even necessarily reach the account's spam box, while forged e-mail sent via Gmail always arrived in the intended account's inbox. Hence exploiting the trust hierarchy among Email Servers.

As Spam messages represents 95% of all email communications, it is simply not feasible to apply the full power of spam filtering to every single message that is received by email servers. Thus to tackle this problem Servers do blacklisting of IP addresses of spam ofenders . This way, messages from blacklisted IP's are reject before even entering the system, and whitelisted addresses are granted ' to bypass most of the filters.

Source: Information Security Research Team



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22 December 2007

Google Text Ad Trojan Detected

An Romanian antivirus company BitDefender has detected an virus in Google's Ad Network.The virus Trojan.Qhost.WU replaces the google's textual ads with ads from a different provider.

The Virus has potentially effected the Adsense users and Google. The users are effected as it takes away the potential revenue which a particular Blooger generates through the Google's ad network and also the ads may contain malicious code which may potentially harm the users computer.

On its Web site, BitDefender describes the Trojan, as spreading at a "low" level and causing medium damage. Although Google has an auto detect system which detects such malicious code but still it failed to detect this virus at the first place of occurrence which now leaves Google with some loop holes to be filled.....................



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15 December 2007

Google Search Tips

Searching is an extensive activity which we perform on net generally for every questions that pops to our mind. When you talk about searching the first thing that will cross through our minds is Google.Google is an extensive search engine which offers lot more features than any available search engine this article written to make aware novice searchers how they can exploit the power of Google search and get the directed result .

Tips............................................................
  1. Explicit Phrase:
    When you are looking for a particular words/string on net then you may not get the desired result like if u type finance home this the result you get :-
    As you can see that i didn't get the intended result, now type the same string but this time within double quotations this will work perfectly.What happens is when ever you type more than one word which are from different domain it searches for both of them considering them as 2 different results and hence it displays the result with finance or home.
  2. Exclude Words:
    Some time it may happen that we are looking for something which lies in more than one domain but we want to exclude result from a particular domain like:-animals which will look like this............. . Now suppose you do not info about insects so what you will do type:-animals-insects. .








3.
Similar Words and Synonyms:

Let’s say you are want to include a word in your search, but want to include results that contain similar words or synonyms. To do this, use the "~" in front of the word.




These 3 particular searching tricks i frequently use, other than these there are some other tricks also.If you wish to read more about tricks and tips to Google search then visit .

http://www.google.com/help/basics.html



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