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Wednesday, February 27, 2013
Nokia Unveils Low-Priced Phones
Friday, October 5, 2012
Bits Blog: 300,000 Android 'Phones' Roam a Virtual Town
David F. Gallagher/The New York Times A cluster of 500 PCs at Sandia National Laboratories in Livermore, Calif., is running a complex simulation of cellphones in the wild.An air-conditioned data center at Sandia National Laboratories in Livermore, Calif., has the ambience of a Best Buy showroom, with 500 inexpensive desktop computers lined up on racks. But the PCs here are doing something special.
A small team of cybersecurity researchers have lashed the computers together to form a homebrew computing cluster. They are stacked five levels high, braced in impromptu fashion with metal girders in the event of earthquakes, and woven together with colorful Ethernet cables. They serve as a cyber-Potemkin village — a distributed software simulation that is intended to mimic the behavior of an entire city’s worth of Android smartphones.
So far, the researchers have emulated the behavior of a network of 300,000 Android phones, down to details like sending text messages and transmitting wireless data, and even the behavior of the phone’s radios or sensors.
In the future, they hope that their software, which will be freely available through an open-source license, will be used by groups designing social network applications like Foursquare, military battle planners, disaster relief workers and American hackers who are building mesh wireless networks intended to make the Internet available inside nations controlled by dictators, among others.
“We wanted to create something that would approximate the many, many phones in a real network,” said John Floren, a Sandia computer scientist who is part of the group of researchers that built the system, which is called MegaDroid.
The idea is that while such simulators have in the past been developed by the engineers of large data networks, they have not been generally accessible to small groups of designers who might be working on a some new type of distributed application.
To date, wireless smartphone networks have not suffered malicious software infections at the same rate as the standard wired network, which is now plagued by a vast array of malware. Many computer security specialists believe that this will soon change as personal computing goes mobile, much as Willie Sutton robbed banks because, as he put it, that’s where the money was.
A wireless network simulation like Megadroid would make it possible for security researchers to gain new insights into “attack vectors,” according to the Sandia engineers. Their computing cluster is in an unclassified area of Sandia, which historically has been one of the two engineering and design centers that has built and maintained the nation’s nuclear weapons.
On a large monitor outside the data center, it appears as if the researchers have turned loose a frenetic army of virtual Charlie Sheens on the city of Livermore, Calif. (The use of the Charlie Sheen icons is apparently an inside joke among the researchers.) The scene is actually a visualization tool used by the MegaDroid simulator, which includes fake GPS data and gives the appearance of a beehive of cellular activity as the Android phone owners drive and walk around a map of the city.
The researchers stressed that simulating a wireless network is a much more complex undertaking than simulating a standard desktop-based network.
“In a desktop PC network, the biggest problem you have is someone kicking a cord out,” said David Fritz, one of the MegaDroid designers.
In contrast, modern wireless networks are composed of shifting herds of tens of thousands of smartphone users. The simulation is made even more complex by the fact that each phone contains multiple radios and sensors.
The danger of not having a deep understanding of the behavior of a computer network was made clear several decades ago at the very beginning of the Internet era. In 1988 a Cornell graduate student brought much of the Internet to a standstill — it was composed of about 50,000 computers at the time — when he unleashed a program known as a worm that was intended to live in the network as a bit of digital graffiti — in effect, the cyber-equivalent of writing “Kilroy was here.” However, because of an error in coding that caused the software to rapidly replicate, a vast number of copies spread through the network, overwhelming it.
The researchers said they were concerned about such issues of network resilience, but they also saw the possibility that MegaDroid might be used to build new kinds of distributed applications. For example, disaster workers in an earthquake zone could harness the accelerometers in their phones together to provide a digital seismograph, tracking aftershocks. Or small and inexpensive chemical and biological sensors could be added to smartphones carried by government workers, creating an early warning system in the event of terrorist attacks.
The researchers said that they were sensitive to privacy issues and that they believed the simulator could be used to build systems that provided useful data in national security situations while protecting privacy.
Right now the system models only the open-source Android operating system designed by Google, but the Sandia researchers said they hoped to add other operating sytems like Apple’s IOS. This would give a more realistic model of the wireless data world.
Friday, September 28, 2012
Bits Blog: RIM Shows Off New BlackBerry Phones, but Gives No Release Date
Eric Risberg/Associated Press Thorsten Heins, the president and chief executive of RIM, did not offer a specific date for the coming line of BlackBerry 10 phones.OTTAWA — Research in Motion said on Tuesday that its coming line of BlackBerry 10 phones would include the company’s popular BlackBerry Messenger service, a feature still absent on its tablet computers.
But during his presentation to software developers in San Jose, Calf., Thorsten Heins, the president and chief executive of RIM, still did not offer a specific date for what he called “our most important launch ever.” Mr. Heins said, however, that the new phones, which have been delayed twice, will be on sale at some point early next year.
At the meeting, the company displayed the second version of a prototype BlackBerry 10 phone. Outwardly, it appeared little different from a prototype given to developers in May. But the software on the phone demonstrated on Thursday looked much more refined and advanced. In addition to BlackBerry Messenger, it included apps for Facebook, LinkedIn, Twitter and Foursquare, which were integrated with the phone’s calendar, datebook and e-mail apps.
RIM also showed how corporations and governments would be able to segregate their data and app from users’ personal selections and information.
The software linking all the features, Mr. Heins said, will allow users to perform a variety of tasks from a single screen without switching applications.
Although creating new phones and a new operating system has clearly been a struggle for the company, Mr. Heins made no effort to temper expectations.
“We are convinced that the BlackBerry 10 platform will shape the next 10 years as profoundly and significantly as BlackBerry shaped the last 10 years,” he said. Recent demonstrations of the prototype to people at telephone companies and elsewhere, he said, have made “believers out of those who had previously written BlackBerry off.”
Still, the success of the new phones remains to be seen. On Thursday, Mr. Heins will have to face a much less cheery group, RIM’s investors, when he announces the company’s second-quarter results. A Bloomberg survey of 35 analysts found that they expected the company to report that earnings fell 41 percent from the same period last year.
Leading up to Tuesday, some analysts speculated that the total number of BlackBerry users had not grown or had even declined during the quarter, which would have been a first for the company. But Mr. Heins said RIM had counted 80 million BlackBerry users during the quarter, up from 78 million the last time the company reported.