Wednesday, June 11, 2014

Cheap, tiny robots serve as terrain scouts for expensive ones (video)

Source: http://www.engadget.com/2014/06/11/uc-berkeley-eth-zurich-robots/

Big robots like Cheetah and Big Dog cost a lot to make, so it would be such a shame if they get put out of commission after slipping on, say, a patch of ice. To prevent that from happening, UC Berkeley and ETH Zurich researchers propose sending a team of small, expendable robots ahead of the big, expensive one to scout terrain conditions -- in the event that they do get used for real missions, that is. The researchers demonstrated their idea at the IEEE robotics conference in Hong Kong, where they used UC Berkeley's tiny cardboard robot called VelociRoACH to do recon work for ETH Zurich's StarlETH.

They loaded the smaller machine with the ability to send back terrain data to the bigger quadruped, which, in turn, is equipped with a camera to monitor its minion's location. Thanks to this kind of setup, the scout robot can tell the main unit if an area's too unstable to step on, and the bigger machine can avoid that exact spot. During real missions, that'll probably mean losing scouts along the way, but that's the idea anyway: sacrifice cheap robots for the sake of the multi-million creation.

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Via: IEEE

Source: US Berkeley

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An Austrian Teen Discovered The Vulnerability That Set Off TweetDeck's Outage

Source: http://www.businessinsider.com/austrian-teen-tweetdeck-outage-2014-6

TweetDeck was down for about an hour Wednesday while the company was fixing a vulnerability allowing cross site scripting attacks (XSS) that caused a tweet with some code and a little heart in it to be retweeted over and over.

The script in the tweet was being rendered as code in users' browsers. Attackers could execute code (like making an account automatically retweet) on anyone's computer just by tweeting it out. 

TweetDeck fixed the vulnerability, which may have first been discovered by an Austrian teen. The Verge reports that at 8:05 this morning, the Twitter account @FiroXL, which belongs to a 19-year-old named Florian, tweeted a Javascript tag along with a heart symbol and a German phrase that means something along the lines of "I wonder if this will work":

TweetDeck Hack

He basically discovered that if he included the heart in his tweet, TweetDeck would execute Javascript or HTML from plaintext (that's why all the spammy tweets you saw in your timeline had hearts at the end of them). As soon as he discovered the vulnerability, he tweeted "Discovered vulnerability in TweetDeck.

From there, other Twitter users started using the technique. TweetDeck shut down its service while it made the security fixes necessary to fix the bug.  

SEE ALSO: A String Of Disasters At PayPal Has Capped eBay's Toughest Year Ever

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Wire magically untangles itself in water

Source: http://sploid.gizmodo.com/wire-magically-untangles-itself-in-water-1589098717/+caseychan
Wire magically untangles itself in water
Nitinol wire, a metal alloy made from nickel and titanium, basically has magic properties that lets it remember its 'original' shape. You can bend it over and over, twist it up, bunch it together and confuse the heck out of it however much you want but once you throw it in hot water, it'll snap back to its original shape.
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