Monday, October 20, 2014

WHY HACKERS PREFER LINUX?

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Linux use is growing at an amazing rate. This operating system, which has no public relations department, advertising, or government lobby, is being used widely in homes and server rooms alike. It’s also free, and 100% open source, meaning anyone can look at each and every line of code in the Linux kernel.

Android 5.0 Lollipop: All the details and features of Google’s sweetest treat yet

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Lollipop Forest
Google revealed many details about the new version of Android a few months ago, but we didn’t get a name — it was simply “Android L.” Now there’s finally a name and a version number to go with it. Android 5.0 Lollipop is a seismic shift for Android in both design and features. With all the details of Android 5.0 now in the wild, it’s time to tell you all about the latest, largest, and greatest Android release yet. Buckle up and sit back: There’s a lot of

Apple SIM and the death of the SIM card

iPhone 5S with SIM card tray popped outLet’s not delude ourselves here: Apple’s iPad event was spectacularly dull. You just know it’s going to be anticlimactic when Craig Federighi forces us to sit through 30-plus minutes of iOS and OS X news before Tim Cook was allowed to unveil the — big surprise — thinner and lighter iPad Air 2, and the sniveling footnote that is the iPad Mini 3. In fact, there is one

Monday, October 13, 2014

Samsung develops 60GHz WiFi capable of 4.6Gbps, will be in devices next yea

Samsung 5G lab test


Samsung has announced that it’s entering the 60GHz 802.11ad WiFi game. Samsung says it has a commercialized version of 60GHz WiFi (aka WiGig) that’s capable of 4.6Gbps, or 575 megabytes per second — about five times faster than current dual-stream 802.11ac devices, or fast enough to download a movie in a couple of seconds. Samsung says the first devices supporting its 60GHz WiFi tech will be available in 2015.

This announcement is a little bit fishy. Samsung is dressing this up like it’s solely responsible for developing 60GHz WiFi — but in actual fact, 802.11ad has been in development since 2009 and was standardized way back in 2012. Back then it was known as WiGig (because of its gigabit speeds), but in 2013 it was consumed by the Wi-Fi Alliance and became part of the WiFi family of wireless networking standards. We have been writing about WiGig/60GHz WiFi since at least 2011, and got our first hands-on demo in 2012 – but, seemingly for technical reasons, very few WiGig products have actually appeared on the market. Presumably Qualcomm’s acquisition of Wilocity means it will have a commercialized 802.11ad solution soon, though.
Calling 802.11ad “60GHz WiFi” is a bit of a misnomer. Until now, WiFi described a set of relatively-low-frequency (2.4GHz and 5GHz) technologies for (mostly) creating wireless LANs. As a result, WiFi has generally had a range of between 50 and 200 feet — the kind of distances that you’d usually be loathe to run a cat 5 cable. 802.11ad, because 60GHz radio waves require line-of-sight and can be disrupted by just about anything — cats, humans, bad atmospheric conditions, a closed door — generally has a range of just a few meters. As such, 60GHz WiFi has a fairly short list of decent applications, with “wireless docking stations” probably at the top.
WiGig in the living room
Original WiGig concept art, from 2010. Notice the distinct lack of obstacles and handy line-of-sight. 60GHz WiFi will be great in minimalist homes…
While there’s only a few hundred megahertz of spectrum down in the 2.4/5GHz range, up in the unlicensed 60GHz range there’s around eight gigahertz of free bandwidth. A single 802.11ad channel – a swath of 2.16GHz around the 60GHz range — has a max throughput of 4.6Gbps. A single 160MHz 802.11ac channel maxes out 866Mbps — and there aren’t any 802.11ac chips that support 160MHz channels yet. Multi-stream 802.11ac is capable of similar speeds to 802.11ad, though.
Why is Samsung making such a huge deal about its 802.11ad solution, then? Well, it seems the company has found a way of overcoming the inherent difficulties of using 60GHz radio waves. The press release is sadly lacking in technical details, but apparently Samsung has developed “the world’s first micro beam-forming control technology” and a “wide-coverage beam-forming antenna” that improve the 802.11ad connection quality. Samsung doesn’t actually offer any numbers or examples, though; as far as we can tell, Samsung’s 60GHz WiFi is probably still mostly targeted at static solutions (docking stations, wireless audio/visual devices) rather than smartphones and laptops, which have a tendency to move around a lot and break the finicky 60GHz beam.
Linksys WRT1900AC, standing outside
Personally I’m more excited about the proliferation of multi-stream 802.11ac devices, such as this Linksys WRT1900AC router, as seen outside my house in England.
Moving forward, I’ve never been particularly convinced by 60GHz networking technologies. Once we move towards tri- and quad-stream 802.11ac devices, 802.11ad isn’t a whole lot faster — and it’s a whole lot more temperamental. Perhaps most importantly, though,802.11ax is already coming down the pipe — and unlike 802.11ad, it’s a standard, long-range, 5GHz-based WiFi technology. A single 802.11ax stream should be capable of 3.5Gbps — and the spec will go all the way up to 4×4 MIMO, for 14Gbps, or about 1,750 megabytes per second.
Anyway, if you’re still interested, Samsung says its 802.11ad technology will be available in 2015. I don’t think the average consumer will see a lot of WiGig/60GHz WiFi — instead, 802.11ac will cement its grip in 2015 in 2016, and then slowly hand over to 802.11ax after that.

Edward Snowden’s Privacy Tips: “Get Rid Of Dropbox,” Avoid Facebook And Google

 by Anthony Ha 




According to Edward Snowden, people who care about their privacy should stay away from popular consumer Internet services like Dropbox, Facebook, and Google.
Snowden conducted a remote interview today as part of the New Yorker Festival, where he was asked a couple of variants on the question of what we can do to protect our privacy.
His first answer called for a reform of government policies. Some people take the position that they “don’t have anything to hide,” but he argued that when you say that, “You’re inverting the model of responsibility for how rights work”:
When you say, ‘I have nothing to hide,’ you’re saying, ‘I don’t care about this right.’ You’re saying, ‘I don’t have this right, because I’ve got to the point where I have to justify it.’ The way rights work is, the government has to justify its intrusion into your rights.
He added that on an individual level, people should seek out encrypted tools and stop using services that are “hostile to privacy.” For one thing, he said you should “get rid of Dropbox,” because it doesn’t support encryption, and you should consider alternatives like SpiderOak. (Snowden made similar comments over the summer, with Dropbox responding that protecting users’ information is “a top priority.”)
[Update: In a June blog post related to Snowden, Dropbox actually says, "All files sent and retrieved from Dropbox are encrypted while traveling between you and our servers," as well as when they're "at rest on our servers," and it points to other security measures that the company is taking. The difference between Dropbox and SpiderOak,as explained elsewhere, is that SpiderOak encrypts the data while it's on your computer, as opposed to only encrypting it "in transit" and on the company's servers.]
[And here's a more complete Snowden quote, from around 1:04:55 in the video: "We're talking about encryption. We're talking about dropping programs that are hostile to privacy. For example, Dropbox? Get rid of Dropbox, it doesn't support encryption, it doesn't protect your private files. And use competitors like SpiderOak, that do the same exact service but they protect the content of what you're sharing."]
He also suggested that while Facebook and Google have improved their security, they remain “dangerous services” that people should avoid. (Somewhat amusingly, anyone watching the interview via Google Hangout or YouTube saw a Google logo above Snowden’s face as he said this.) His final piece of advice on this front: Don’t send unencrypted text messages, but instead use services like RedPhone and Silent Circle.
Earlier in the interview, Snowden dismissed claims that increased encryption on iOS will hurt crime-fighting efforts. Even with that encryption, he said law enforcement officials can still ask for warrants that will give them complete access to a suspect’s phone, which will include the key to the encrypted data. Plus, companies like Apple, AT&T, and Verizon can be subpoenaed for their data.
Beyond the privacy discussion, Snowden talked about how and why he decided to leak documents bringing the government’s electronic surveillance programs to light. He repeatedly claimed that he wasn’t pursuing a specific policy outcome, but just trying to have an open conversation about these issues:
We can have secret programs. You know, the American people don’t have to know the name of every individual that’s under investigation. We don’t need to know the technical details of absolutely every program in the intelligence community. But we do have to know the bare and broad outlines of the powers our government is claiming … and how they affect us and how they affect our relationships overseas. Because if we don’t, we are no longer citizens, we no longer have leaders. We’re subjects, and we have rulers.
As for why Snowden hasn’t come back to the United States to stand trial, he said that when he looked at how the U.S. government treated whistleblowers like Thomas Drakeand Chelsea Manning, he became convinced that he wouldn’t be able to present his case to a jury in an open trial.
“I’ve told the government again and again in negotiations, you know, that if they’re prepared to offer an open trial, a fair trial in the same way that Dan Ellsberg got, and I’m allowed to make my case to the jury, I would love to do so,” he said. “But to this point they’ve declined.”
Snowden acknowledged that there’s some irony in his taking shelter in China and Russia, countries that don’t exactly have spotless human rights or privacy records themselves. He said Russia was supposed to be a transit point on his way to Latin America — but his passport was canceled while he was at the Moscow airport.
The New Yorker’s Jane Mayer ended the interview on a light note, suggesting that Snowden was now free to enjoy some vodka. He replied, “I actually don’t drink alcohol. Little-known fact: I’ve never been drunk.”
Here’s a full video of the interview. The discussion of privacy and consumer Internet services (which, again, consisted of two questions in a row) begins at around 58:30.