Security – Pass hash attack for Yahoo Messenger

Authentication is an important process of a internet service for authenticating users. For example, when you register an account for Yahoo mail, you will be asked for an ID and password so that only you can access to your email account. That means Yahoo will save your ID and your password in their servers so that they can compare with your input later. Your ID can be saved in clear text but the password will not be never saved under clear text. Yahoo uses its own algorithmus to make a hash of your password. For example your password is “123456789”, then Yahoo may save it as format “25f9e794323b453885f5181f1b624d0b”. In this way only you know the password and if the server is attacked, your password will be still safe. Furthermore password hash protects you from losing password through snipping on network connection.

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How to enable Yahoo Smiley search?

A smiley or happy face , is a stylized representation of a smiling human face, commonly represented as a yellow (many other colors are also used) circle (or sphere) with two black dots representing eyes and a black half circle representing the mouth. “Smiley” is also sometimes used as a generic term for any emoticon.
Nowadays the smileys are used in so many applications, such as desktop application, web application. You can see them everywhere, in your chat application, forums, blogs, etc… I use smiley for expressing my emotion when I am using Yahoo Messenger Application. However it is for me very difficult to remember all of codes of the smileys. They are for me little same. Code are combined of some normal character and special character. For example code starting with “:” are “:)”, “:(“, “:-/”, “:x”, “:”>” “:-p”, “:-*”, “:-o”. How can I distinguish between them? Luckily Yahoo Messenger provides us a useful function so that we can search smiley which we want. To enable this feature just download this SmileySearch.reg file, click on it and you have this search feature on in your chat dialog. From now on, we need to tip some symbols relevant to smiley and choose it from the suggested list.

During enabling this feature I found that there is a command allowing us to export a value (not complete key) in a registry to file. To make the .reg file, I exported it from registry with following command “REG QUERY HKCU\Software\Yahoo\Pager /v SmileySearch > SmileySearch.reg“. There are still a lot of available options for this command. You can study more about this command with option “/?”.
And at the end I would like to give you the links to all of smileys with their codes and meanings in Yahoo Messenger (up to date). Enjoy yourself with chatting.
Emoticons : http://messenger.yahoo.com/features/emoticons/
Hidden emoticons: http://messenger.yahoo.com/features/hiddenemoticons/