Silent Skype calls can hide secret messages









































Got a secret message to send? Say it with silence. A new technique can embed secret data during a phone call on Skype. "There are concerns that Skype calls can be intercepted and analysed," says Wojciech Mazurczyk at the Institute of Telecommunications in Warsaw, Poland. So his team's SkypeHide system lets users hide extra, non-chat messages during a call.












Mazurczyk and his colleagues Maciej Karaś and Krysztof Szczypiorski analysed Skype data traffic during calls and discovered an opportunity in the way Skype "transmits" silence. Rather than send no data between spoken words, Skype sends 70-bit-long data packets instead of the 130-bit ones that carry speech.












The team hijacks these silence packets, injecting encrypted message data into some of them. The Skype receiver simply ignores the secret-message data, but it can nevertheless be decoded at the other end, the team has found. "The secret data is indistinguishable from silence-period traffic, so detection of SkypeHide is very difficult," says Mazurczyk. They found they could transmit secret text, audio or video during Skype calls at a rate of almost 1 kilobit per second alongside phone calls.












The team aims to present SkypeHide at a steganography conference in Montpellier, France, in June.


















































If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.




































All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.


If you are having a technical problem posting a comment, please contact technical support.








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Wong Kar Wai returns with new film "The Grandmaster"






BEIJING: Hong Kong director Wong Kar Wai's long-awaited martial arts film "The Grandmaster" was shown in public for the first time in Beijing on Sunday, after more than six years in production.

The film spans several decades of Chinese history to tell the story of legendary martial artist Yip Man, who went on to train Bruce Lee, and features lengthy battles between rival kung fu masters.

Wong, 54, is best known for his slow-burn drama in 2000, "In the Mood for Love".

His new film, packed with Chinese stars including Hong Kong actor Tony Leung and Beijing-born starlet Zhang Ziyi, appears well placed to capture the local audience.

In his first press appearance to promote the film, Wong was also confident that "The Grandmaster", which runs for over two hours in its current edit and is steeped in traditional martial arts culture, would be well received abroad.

"There is no such thing as a Western or Eastern audience... the elements of cinema are the same worldwide, although their expression is different," said Wong, wearing his trademark dark glasses.

The film, set to hit Chinese cinemas on Tuesday, follows its lead character through some of China's most tumultuous recent history including the Japanese invasion in the 1930s.

It has been delayed several times, amid rumours of extensive reshooting and injured actors, but Wong shrugged off claims that the filming had taken too long.

"It felt like three years of university... we didn't want filming to end," he said.

Leung, 50, who plays the eponymous "Grandmaster" and has also starred in several of Wong's most acclaimed films, praised his co-star Zhang, 33, for her persistence while filming long fight scenes, which they enacted themselves.

"I fought with her a lot of times," he said. "She was injured several times, and I knew it was tough for her, but it wasn't possible for me to fight less intensely."

Shanghai-born Wong, who was raised in Hong Kong, enveloped himself in Chinese martial arts while researching the film's script, travelling across the country to meet kung fu masters and historians, a process he described as "like discovering a completely new world".

He also defended the length of his final edit, which contains extended stretches of dialogue between the main characters.

"The film could have lasted four hours, but I deleted a lot of scenes... a one hundred and thirty minute film is normal these days," he said.

Wong made his international breakthrough in 1994 with "Chungking Express" and was the first Chinese director to sit on the jury at Cannes.

In February he will lead the jury of the Berlin film festival, which traditionally highlights Asian cinema.

- AFP/xq



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Dropped call: Mobile biggies conspicuous by absence at CES



Escalator up to the South Hall entrance of the Las Vegas Convention Center at CES 2012.



(Credit:
Sarah Tew/CNET)


LAS VEGAS -- Mobile is supposed to be a hot category in tech, right? You'd never know it looking at the announcements that are slated to start pouring in this week.


Many of the major companies in the mobile industry have opted to skip or limit their presence at this year's Consumer Electronics Show, which kicks off tomorrow for the media before officially opening on Tuesday. The announcements that do come out will emerge from lower-tier companies hoping to make more of a name for themselves and their products.


The dearth of wireless-related news at a time when the tech world is going increasingly mobile underscores the dilemmas that a show like
CES faces: too many competing conferences, more companies opting to hold their own events, and unfortunate timing after a large wave of product announcements ahead of the holidays. As a result, don't expect to have your mind blown with the mobile announcements coming out this week.



"There aren't really high expectations for lots of big news coming out from CES," said Daniel Hays, a consultant for PricewaterhouseCoopers. "CES is an increasingly crowded forum to get your message out. That probably causes some vendors to hold back in making major announcements."


Apple and Google, authors of the two largest mobile operating systems in the world, have long had minimal to zero presence at CES. Microsoft, which made its big push for Windows Phone 8 in October, held its last keynote address here a year ago. Research In Motion, the other significant mobile operating system, will formally unveil its next-generation BlackBerry 10 operating system at its own event later this month.


Samsung has long had one of the largest presences at CES, but it won't have much in terms of smartphone or
tablet announcements, having already heavily invested in a campaign for its Galaxy Note 2 and the continued run of its Galaxy S III late last year. The company also pulled out of the
CTIA Wireless show last year, opting instead to launch its flagship phone at its own event, much like Apple.


Other traditional mobile heavy hitters, including Google's Motorola Mobility, Nokia, and HTC, won't have much to say as well.


The carriers, which in recent years have stepped up their presence at CES, are expected to remain quiet this year. Verizon CEO Lowell McAdam has a keynote address scheduled for tomorrow, but the company isn't expected to make any major wireless announcements, a far cry from the splashy launch of its 4G LTE network two years ago. AT&T, which holds its own developer summit separately from CES but usually offers some mobile news, is likewise expected to remain mum.


T-Mobile USA will hold a press conference and likely talk about its network plans and pending deal with MetroPCS, although actual phone announcements could be slim. Sprint Nextel, still working through its own pending merger with SoftBank, doesn't have any formal event scheduled.

Mobile World Congress around the corner


Mobile World Congress, based in Barcelona, has always been a major force. And with everything going more mobile, the show has grown even more in prominence and influence over the years. The U.S. carriers, which traditionally opted to skip MWC, are increasingly taking part in that show.


Likewise, a lot of major smartphone and tablet announcements are getting made there, rather than at CES. Asus, for instance, cancelled its press conference at CES, opting to debut its mobile products at MWC in February instead.


While Google isn't so high on CES, it has had a large presence at MWC over the past few years, including large booths complete with a slide, an array of demonstration booths, and toy claw machine giving away stuffed Android dolls.


MWC's legacy in mobile gives it an advantage over CES, which has traditionally been about televisions, PCs, and other random gadgets. The transition has been bumpy.


"It's all about your audience. CES has historically drawn an audience primarily focused on retailers. Increasingly, that audience are not just at CES; they're at other influential shows like MWC," Hays said.


CES is making the shift. Mobile chipset companies, for instance, make up some of the early announcements for the show. Tonight, Nvidia will kick things off with its own press event, unveiling its newest Tegra processor.


Meanwhile, Paul Jacobs, CEO of mobile chipmaker Qualcomm, takes over tomorrow's end-of-day keynote slot long occupied by Microsoft and its CEO, Steve Ballmer, another illustration of the shift from PC to mobile.

Opportunities for the second-tier companies


With a Samsung or Motorola out of the picture, that gives companies eager for some attention a chance to shine.


Sony is one of the few companies expected to announce a smartphone or two, and details have already begun leaking out.


Huawei and ZTE, two Chinese vendors eager to stake a larger claim of the U.S. market, are also expected to unveil smartphones at CES. Both are known primarily for low- and mid-tier smartphones and tablets, but the companies want to change that.


ZTE is expected to unveil a high-end flagship smartphone, the Grand S, at CES. It's still unclear whether it will actually sell in the U.S. though.


ZTE could be making a big splash at CES this year.



(Credit:
Josh Miller/CNET)


Huawei, meanwhile, is expected to go big with the Ascend Mate, a large phone with a 6.1-inch display that falls into a category many call "phablet," most notably led by the Galaxy Note franchise by Samsung.


Whether these products ever end up in the consumers' hands is still up in the air. But with some of better-known companies opting to save their ammunition for later, the companies presenting now will at least get heard.


"CES is still an extremely powerful platform for announcing new products and positioning yourself as a leader in the mobile space," Hays said.

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Best Pictures: 2012 Nat Geo Photo Contest Winners









































































































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Gun Show Near Newtown Goes on Despite Anger













A little more than 40 miles from Sandy Hook Elementary School, where last month 20 first graders and six staff members were massacred, gun dealers and collectors alike ignored calls to cancel a gun show, and gathered for business in Stamford, Conn.


Four other gun shows with an hour of Newtown, Conn., recently cancelled their events in the wake of the shootings, when 20-year-old Adam Lanza broke in to the elementary school with a semi-automatic assault rifle and three other guns.


The organizers in Stamford emphasized their show only displayed antique and collectible guns, not military style assault weapons like the one used by Lanza in Sandy Hook.


Still, Stamford Mayor Michael Pavia had called for the show to close its doors, calling it "insensitive" to hold so close to the murders.


Gun show participant Sandy Batchelor said he wasn't sure about whether going ahead with the show was "insensitive," but said the shooter should be blamed, not the weapons he used.


"I don't have a solid opinion on [whether it is insensitive]," Batchelor said. "I'm not for or against it. I would defend it by saying it wasnt the gun."


In nearby Waterbury, the community cancelled a show scheduled for this weekend.


"I felt that the timing of the gun show so close to that tragic event would be in bad taste," Waterbury Police Chief Chief Michael J. Gugliotti said.












National Rifle Association News Conference Interrupted by Protesters Watch Video





Gugliotti has halted permits for gun shows, saying he was concerned about firearms changing hands that might one day be used in a mass shooting.


Across the state line in White Plains, N.Y, Executive Rob Astorino also canceled a show, three years after ending a had that had been in place since the 1999 Columbine High School shooting in Colorado. He said he felt the show would be inappropriate now.


But across the country, farther away from Connecticut, attendance at gun shows is spiking, and some stores report they can hardly keep weapons on their shelves with some buyers fearful of that the federal government will soon increase restrictions on gun sales and possibly ban assault weapons altogether.


"We sold 50-some rifles in days," said Jonathan O'Connor, store manager of Gun Envy in Minnesota.


President Obama said after the Sandy Hook shooting that addressing gun violence would be one of his priorities and Rep. Nancy Pelosi, D-Calif., said she would introduce an assault weapons ban this month.


But it is not just traditional advocates of gun control that have said their need to be changes in gun laws since the horrific school shooting.


Republican Sen. Kay Bailey Hutchison of Texas and Virginia Sen. Mark Warner, a Democrat but a long-time opponent of gun control who like Hutchison has received an A rating from the NRA, have both come out in support of strengthening gun laws.


In Stamford, gun dealer Stuart English said participants at the gun show there are doing nothing wrong.


"I have to make a living. Life goes on," gun dealer Stuart English said.


ABC News asked English, what he thought about the mayor of Stamford calling the show "insensitive."


"He's wrong," English said. "This is a private thing he shouldn't be expressing his opinion on."


If you have a comment on this story or have a story idea, you can tweet this correspondent @greenblattmark.


The Associated Press contributed to this report.



Read More..

Silent Skype calls can hide secret messages









































Got a secret message to send? Say it with silence. A new technique can embed secret data during a phone call on Skype. "There are concerns that Skype calls can be intercepted and analysed," says Wojciech Mazurczyk at the Institute of Telecommunications in Warsaw, Poland. So his team's SkypeHide system lets users hide extra, non-chat messages during a call.












Mazurczyk and his colleagues Maciej Karaś and Krysztof Szczypiorski analysed Skype data traffic during calls and discovered an opportunity in the way Skype "transmits" silence. Rather than send no data between spoken words, Skype sends 70-bit-long data packets instead of the 130-bit ones that carry speech.












The team hijacks these silence packets, injecting encrypted message data into some of them. The Skype receiver simply ignores the secret-message data, but it can nevertheless be decoded at the other end, the team has found. "The secret data is indistinguishable from silence-period traffic, so detection of SkypeHide is very difficult," says Mazurczyk. They found they could transmit secret text, audio or video during Skype calls at a rate of almost 1 kilobit per second alongside phone calls.












The team aims to present SkypeHide at a steganography conference in Montpellier, France, in June.


















































If you would like to reuse any content from New Scientist, either in print or online, please contact the syndication department first for permission. New Scientist does not own rights to photos, but there are a variety of licensing options available for use of articles and graphics we own the copyright to.




































All comments should respect the New Scientist House Rules. If you think a particular comment breaks these rules then please use the "Report" link in that comment to report it to us.


If you are having a technical problem posting a comment, please contact technical support.








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Football: Transfer talks stall for AC Milan's Robinho






MILAN: AC Milan's bid to sell Robinho to Brazilian top flight side Santos floundered early on Saturday after the clubs failed to agree on a transfer fee, it was reported.

Milan have slapped a 10m-euro price tag on the talented Brazilian while Santos offered only seven million, according to ANSA news agency.

ANSA also reported that another Brazilian side that had shown an interest in purchasing Robinho, Atletico Mineiro, had now called off talks.

Citing Brazilian newspaper Folha de Sao Paulo, it said Atletico could not meet Milan's 10m euro asking price nor Robinho's wage demands.

Milan's former Brazilian striker Alexandre Pato on Thursday joined Brazilian side Corinthians in a four-year deal thought to be worth 15 million euros.

The Serie A giants sit seventh in Serie A, 17 points adrift of leaders Juventus, ahead of the visit of Siena on Sunday.

- AFP/xq



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Library of Congress digs in to full archive of 170 billion tweets



The U.S. Library of Congress said today that it has completed a process of collecting a full, ongoing stream of tweets, and that it has begun work to archive and organize more than 170 billion tweets.




Under an agreement struck between the government institution and Twitter in 2010, the microblogging company is providing the Library of Congress with a full stream of all public tweets, starting with 21 billion generated from between 2006 and April 2010, and now supplemented with about 150 billion more posted since then.


In an announcement about the status of the project today, the library wrote that:


Twitter is a new kind of collection for the Library of Congress but an important one to its mission. As society turns to social media as a primary method of communication and creative expression, social media is supplementing, and in some cases supplanting, letters, journals, serial publications, and other sources routinely collected by research libraries.


Though the Library has been building and stabilizing the archive and has not yet offered researchers access, we have nevertheless received approximately 400 inquiries from researchers all over the world. Some broad topics of interest expressed by researchers run from patterns in the rise of citizen journalism and elected officials' communications to tracking vaccination rates and predicting stock market activity.


The Library of Congress isn't entirely clear how the ongoing archive will be utilized, but it has issued a white paper (PDF) outlining the project.


This project, of course, is different than Twitter's recently announced initiative to make every user's full tweet history available to them. That effort is under way, though only some users have been given access to date.


Interestingly, the Library of Congress reported in the white paper that its two full copies of the entire archive of 170 billion tweets comprise about 133 Terabytes of data. Each tweet, the library wrote, contains about 50 accompanying metadata fields.


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Best Pictures: 2012 Nat Geo Photo Contest Winners









































































































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Debt Limit Negotiating Tactic? No Negotiating


ap obama ac 130102 wblog In Fiscal Wars No Negotiation Is a Negotiating Tactic

President Barack Obama and Vice President Joe Biden walk away from the podium after Obama made a statement regarding the passage of the fiscal cliff bill in the Brady Press Briefing Room at the White House in Washington, Tuesday, Jan. 1, 2013. (AP Photo/Charles Dharapak)


Analysis


New for 2013: In the Washington, D.C. fiscal wars we’ve gone from everything must be on the table to politicians declaring they won’t debate.


The fiscal cliff deal either averted disaster or compounded the problem, depending on who you ask. It certainly created new mini-cliffs in a few months as Congress and the president square off on the debt ceiling, spending cuts and government funding. But it also made sure the vast majority of Americans won’t see as big a tax hike as they might have.


President Obama was pretty clear late on New Year’s night as he reacted to Congress’s passage of a bill to take a turn away from the fiscal cliff. He won’t negotiate with Republicans about the debt ceiling.


“Now, one last point I want to make,” said the president, before wrapping up and hopping on Air Force One for a redeye to Hawaii. “While I will negotiate over many things, I will not have another debate with this Congress over whether or not they should pay the bills that they’ve already racked up through the laws that they passed.”


(Read more here about the Fiscal Cliff)


That’s pretty clear. No debt ceiling negotiation. Then he added for emphasis: ”Let me repeat: We can’t not pay bills that we’ve already incurred. If Congress refuses to give the United States government the ability to pay these bills on time, the consequences for the entire global economy would be catastrophic — far worse than the impact of a fiscal cliff.”


But in Washington, saying you won’t do something these days has almost become like an opening bid. At least, that’s how Republicans are treating the president’s line in the sand.


“The president may not want to have a fight about government spending over the next few months, but it’s the fight he is going to have because it’s a debate the country needs,” wrote Senate Minority Leader Mitch McConnell, the Kentucky Republican, in an op-Ed on Yahoo! News about 36 hours later. “For the sake of our future, the president must show up to this debate early and convince his party to do something that neither he nor they have been willing to do until now.”


“We simply cannot increase the nation’s borrowing limit without committing to long overdue reforms to spending programs that are the very cause of our debt,” McConnell said.


The national debt is soon set to reach $16.4 trillion. That’s not a problem that can be solved with one bill or budget. And the two sides will have to figure out some sort of way to talk about entitlement/social safety net reform – meaning things like Medicare, Medicaid, and Social Security – in addition to cutting spending and, most importantly, hope for an improving economy, to deal with those deficits.


House Speaker John Boehner, who has several times now failed to reach a big, broad fiscal deal with President Obama, told colleagues, according to The Hill newspaper, that he’s done with secret White House negotiations. He wants to stick with the constitutional way of doing things, with hearings and bills that are debated on Capitol Hill rather than hatched by the vice president and Senate Republicans.


Okay. Obama won’t negotiate on the debt ceiling. McConnell won’t not negotiate on the debt ceiling. Boehner doesn’t to do things by the book.


But McConnell won’t negotiate on taxes any more.


“Predictably,” McConnell had written earlier in his post, “the president is already claiming that his tax hike on the ‘rich’ isn’t enough. I have news for him: the moment that he and virtually every elected Democrat in Washington signed off on the terms of the current arrangement, it was the last word on taxes. That debate is over.”


It’s a new chapter in the ongoing fiscal saga in Washington. Back when the two sides were talking about a grand bargain or a big deal – some sort of all-inclusive reform that would right the listing deficit with one flip of the rudder – the popular trope was that “everything must be on the table.” That’s basically how Obama put it back in the summer of 2011 when he and Boehner failed to reach a grand bargain. He wanted higher taxes – they were calling them revenues back then. More recently, after Obama won the election and when he and Boehner were trying to hammer out another grand bargain to avert the fiscal cliff, Boehner wanted entitlements on the table. That means he wanted to find ways to curb future spending.


Both sides are declaring they won’t debate certain points, but this far – a full two months – before the mini-cliffs start, those are easier declarations to make than they will be when the government is in danger of defaulting or shutting down.


Even though they’re trying to take elements off the table, both men hope that coming negotiations can be a little more cordial and a little less down-to-the wire.


“Over the next two months they need to deliver the same kind of bipartisan resolution to the spending problem we have now achieved on revenue — before the 11th hour,” wrote McConnell.


“The one thing that I think, hopefully, in the New Year we’ll focus on is seeing if we can put a package like this together with a little bit less drama, a little less brinksmanship, not scare the heck out of folks quite as much,” said Obama.


That’ll be tough if neither side will talk about what the other side wants to talk about.


Read More..