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Twitter Compromised Again

May 1st, 2009 by Dev Team in Life

The Twitter admin hack appears to be the result of a successful social engineering attack against one of Twitter’s employees, using the same password reset “hack” that got Sarah Palin last year, the cracker gained access to the employee’s account by resetting their Yahoo! email account password. The hacker going under the handle of Hacker Croll featured 13 screenshots of Twitter’s admin panel, and commented that “The images were taken from the Admin area that was secured with .htaccess.The screenshots featured internal data for accounts belonging to U.S President Barack Obama, Britney Spears, Ashton Kutcher, and Lily Allen, as well as a detailed overview of different sections behind the scenes of Twitter

Judge orders defendant to decrypt PGP-protected laptop

March 23rd, 2009 by admin in News

A federal judge has ordered a criminal defendant to decrypt his hard drive by typing in his PGP passphrase so prosecutors can view the unencrypted files, a ruling that raises serious concerns about self-incrimination in an electronic age.

In an abrupt reversal, U.S. District Judge William Sessions in Vermont ruled that Sebastien Boucher, who a border guard claims had child porn on his Alienware laptop, does not have a Fifth Amendment right to keep the files encrypted.

Src: Cnet

WPA Wi-Fi encryption is cracked

November 6th, 2008 by admin in News, Wireless

Security researchers say they’ve developed a way to partially crack the Wi-Fi Protected Access (WPA) encryption standard used to protect data on many wireless networks.

The attack, described as the first practical attack on WPA, will be discussed at the PacSec conference in Tokyo next week. There, researcher Erik Tews will show how he was able to crack WPA encryption, in order to read data being sent from a router to a laptop computer. The attack could also be used to send bogus information to a client connected to the router.
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Change Your Yahoo Email

October 30th, 2008 by admin in News, Privilege Escalation, Yahoo

The month’s victim comes courtesy of Yahoo, or should I say Yahoo’s HotJobs.com. On October 28th, popular internet research and analysis company Netcraft discovered a vulnerability on the Yahoo site that was being exploited to steal user authentication cookies. These cookies contain user login credentials that can be used to access any of Yahoo’s services, including e-mail. These cookies were being sent remotely to a site in the United States under the control of the attacker.

Yahoo has since corrected the flaw and released the following statement to netcraft:

The team was made aware of this particular Cross-Site Scripting issue yesterday morning (Sunday, Oct. 26) and a fix was deployed within a matter of hours. Yahoo! appreciates Netcraft’s assistance in identifying this issue.

As a safety precaution, we recommend users change their passwords, should they still be concerned. Users should always verify via their Sign-in Seal that they are giving their passwords to Yahoo.com.

How it happened:

The attacker managed to find a flaw at hotjobs.yahoo.com that allows visitors to inject obfuscated JavaScript into the page. The script can be configured to steal authentication cookies. The authentication cookie can then be used to allow the attacker to pose as the user.  This type of attack, and loyal netleets readers already know, is called cross-site scripting. Earlier in the year netcraft found a similar flaw at ychat.help.yahoo.com.

This attack was probably executed using the CookieMonster tool that has recently affected netflix.com and bankofamerica. CookieMonster is a cookie stealing toolkit that works with both http and https sites. It siphons authentication cookies from vulnerable sites. These cookies can be used to hijack a users account.

Theregister.co.uk best describes CookieMonster as follows:

The vulnerability stems from website developers’ failure to designate authentication cookies as secure. That means web browsers are free to send them over the insecure http channel, and that’s exactly what CookieMonster causes them to do. It does this by caching all DNS responses and then monitoring hostnames that use port 443 to connect to one of the domain names stored there. CookieMonster then injects images from insecure (non-https) portions of the protected website, and – voila! – the browser sends the authentication cookie.

A CookieMonster blog listed several popular sites that were allegedly vulnerable back in September. Those sites include southwest.com, expedia.com, usairways.com, register.com, newegg.com, ebay.com, any many many more.

What can be done:

In addition to the steps outlined in this XSS tutorial, sites that contain cookies for authentication must not allow cookie values to be translated on the client side. In the early days of cookie based authentication, many sites simply stored authentication information in the cookie, which can be read in any text editor. Today, cookies merely act as a reference point for server side authentication, however if the cookie can be used from any client, it defeats the purpose of even hiding the true value.

Perhaps the easiest thing that could have been done on Yahoo’s part would have been to configure their site to use http-only or https-only cookies. If only http is allowed, malicious javascript cannot be injected.

Via: netleets.com

Bypass Youtube Age Verification Signup

October 6th, 2008 by admin in News, Uncategorized

This firefox extension simply checks if the URL you’ve just opened contains YouTube’s VerifyAge-page. If it does, it’ll grab the video-ID of the video-clip you just tried to watch and open up a popup-window with that video – WITHOUT having to login / register.
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