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Updated: 6 days 17 hours ago

Ask Slashdot: How To Start With Linux In the Workplace?

Thu, 10/04/2014 - 18:37
An anonymous reader writes "Recently my boss has asked me about the advantages of Linux as a desktop operating system and if it would be a good idea to install it instead of upgrading to Windows 7 or 8. About ten boxes here are still running Windows XP and would be too old to upgrade to any newer version of Windows. He knows that i am using Linux at work on quite outdated hardware (would have gotten a new PC but never requested new hardware — Linux Mint x64 runs quite well on it) and i always managed to get my stuff done with it. I explained to him that there are no licensing issues with Linux, there is no anti-virus software to deal with and that Linux is generally a bit more efficient on old hardware than operating systems from Microsoft. The boss seems interested." But that's not quite the end; read on for this reader's question.

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Under the Chassis: A Look At Tesla's Battery Shield

Thu, 10/04/2014 - 17:50
cartechboy (2660665) writes "Tesla said a few weeks ago it would add additional safety shielding to protect the battery of every Model S car on the road against damage from road debris. But it offered no photos of its update as it would look when installed--so one owner took his own. These may be the first detail shots of what the three different pieces look like. There's a half-round aluminum tube, a titanium plate, and a T-shaped section--and you can see how they combine to deflect and direct impacts to minimize damage to the battery. Do these updates look like they'll solve Tesla's problems?"

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Interviews: Ask Bre Pettis About Making Things

Thu, 10/04/2014 - 17:08
As co-founder and CEO of MakerBot Industries, Bre Pettis is a driving force in the Maker and 3-D printing world. He's done a number of podcasts for Make, and even worked as an assistant at Jim Henson's Creature Shop in London after college. Makerbot's design community, Thingiverse, boasts over 100,000 3D models, and inspires countless artists and designers by allowing them to share their designs. Bre has agreed to set aside some time from printing in order to type answer to your questions. Normal Slashdot interview rules apply.

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Stung By File-Encrypting Malware, Researchers Fight Back

Thu, 10/04/2014 - 16:26
itwbennett (1594911) writes "When Jose Vildoza's father became the victim of ransomware, he launched his own investigation. Diving into CryptoDefense's code, he found its developers had made a crucial mistake: CryptoDefense used Microsoft's Data Protection API (application programming interface), a tool in the Windows operating system to encrypt a user's data, which stored a copy of the encryption keys on the affected computer. Vildoza and researcher, Fabian Wosar of the Austrian security company Emsisoft, collaborated on a utility called the Emsisoft Decrypter that could recover the encrypted keys. In mid-March Vildoza had launched a blog chronicling his investigation, purposely not revealing the mistake CryptoDefense's authors had made. But Symantec then published a blog post on March 31 detailing the error."

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Theo De Raadt's Small Rant On OpenSSL

Thu, 10/04/2014 - 15:45
New submitter raides (881987) writes "Theo De Raadt has been on a better roll as of late. Since his rant about FreeBSD playing catch up, he has something to say about OpenSSL. It is worth the 5 second read because it is how a few thousand of us feel about the whole thing and the stupidity that caused this panic." Update: 04/10 15:20 GMT by U L : Reader badger.foo pointed out Ted Unangst (the Ted in the mailing list post) wrote two posts on the issue: "heartbleed vs malloc.conf and "analysis of openssl freelist reuse" for those seeking more detail.

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New French Law Prohibits After-Hours Work Emails

Thu, 10/04/2014 - 15:10
Hugh Pickens DOT Com (2995471) writes "Lucy Mangan reports at The Guardian that a new labor agreement in France means that employees must ignore their bosses' work emails once they are out of the office and relaxing at home – even on their smartphones. Under the deal, which affects a million employees in the technology and consultancy sectors (including the French arms of Google, Facebook, and Deloitte), employees will also have to resist the temptation to look at work-related material on their computers or smartphones – or any other kind of malevolent intrusion into the time they have been nationally mandated to spend on whatever the French call la dolce vita. "We must also measure digital working time," says Michel De La Force, chairman of the General Confederation of Managers. "We can admit extra work in exceptional circumstances but we must always come back to what is normal, which is to unplug, to stop being permanently at work." However critics say it will impose further red tape on French businesses, which already face some of the world's tightest labor laws." (Continues)

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Canada Halts Online Tax Returns In Wake of Heartbleed

Thu, 10/04/2014 - 14:28
alphadogg (971356) writes "Canada Revenue Agency has halted online filing of tax returns by the country's citizens following the disclosure of the Heartbleed security vulnerability that rocked the Internet this week. The country's Minister of National Revenue wrote in a Twitter message on Wednesday that interest and penalties will not be applied to those filing 2013 tax returns after April 30, the last date for filing the returns, for a period equal to the length of the service disruption. The agency has suspended public access to its online services as a preventive measure to protect the information it holds, while it investigates the potential impact on tax payer information, it said."

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Google: Teach Girls Coding, Get $2,500; Teach Boys, Get $0

Thu, 10/04/2014 - 13:47
theodp (442580) writes "'Public school teachers,' reads the headline at Khan Academy (KA), 'introduce your students to coding and earn $1000 or more for your classroom!' Read the fine print, however, and you'll see that the Google-bankrolled offer is likely to ensure that girls, not boys, are going to be their Computer Science teachers' pets. 'Google wants public high school students, especially girls, to discover the magic of coding,' KA explains to teachers. 'You'll receive a $100 DonorsChoose.org gift code for every female student who completes the [JS 101: Drawing & Animation] course. When 4 or more female students complete it, we'll email you an additional $500 gift code as a thank-you for helping your students learn to code.' While 'one teacher cannot have more than 20 of the $100 gift codes activated on their DonorsChoose.org projects,' adds KA, 'if the teacher has more than 20 female students complete the curriculum, s/he will still be sent gift codes, and the teacher can use the additional gift codes on another teacher's DonorsChoose.org project.' So, is girls-are-golden-boys-are-worthless funding for teachers' projects incongruent with Khan Academy's other initiatives, such as its exclusive partnership with CollegeBoard to eliminate inequality among students studying for the SAT?"

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Cuba: US Using New Weapon Against Us -- Spam

Thu, 10/04/2014 - 10:32
mpicpp (3454017) writes in with news about accusations from Cuban officials about a spamming campaign against the country by the U.S.. "Cuban officials have accused the U.S. government of bizarre plots over the years, such as trying to kill Fidel Castro with exploding cigars. On Wednesday, they said Washington is using a new weapon against the island: spam. 'It's overloading the networks, which creates bad service and affects our customers,' said Daniel Ramos Fernandez, chief of security operations at the Cuban government-run telecommunications company ETECSA. At a news conference Wednesday, Cuban officials said text messaging platforms run by the U.S. government threatened to overwhelm Cuba's creaky communications system and violated international conventions against junk messages. The spam, officials claim, comes in the form of a barrage of unwanted text messages, some political in nature. Ramos said that during a 2009 concert in Havana performed by the Colombian pop-star Juanes, a U.S. government program blanketed Cuban cell phone networks with around 300,000 text messages over about five hours."

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Intel and SGI Test Full-Immersion Cooling For Servers

Thu, 10/04/2014 - 07:57
itwbennett (1594911) writes "Intel and SGI have built a proof-of-concept supercomputer that's kept cool using a fluid developed by 3M called Novec that is already used in fire suppression systems. The technology, which could replace fans and eliminate the need to use tons of municipal water to cool data centers, has the potential to slash data-center energy bills by more than 90 percent, said Michael Patterson, senior power and thermal architect at Intel. But there are several challenges, including the need to design new motherboards and servers."

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The Amoeba That Eats Human Intestines, Cell By Cell

Thu, 10/04/2014 - 02:58
sciencehabit (1205606) writes "Entamoeba histolytica is a tiny pathogen that takes a terrible toll. The single-celled parasite—an amoeba about a tenth the size of a dust mite—infects 50 million people worldwide and kills as many as 100,000 each year. Now, a new report reveals how the microbe does its deadly damage: by eating cells alive, piece by piece. The finding offers a potential target for new drugs to treat E. histolytica infections, and it transforms researchers' understanding of how the parasite works."

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Heartbleed OpenSSL Vulnerability: A Technical Remediation

Thu, 10/04/2014 - 01:32
An anonymous reader writes "Since the announcement malicious actors have been leaking software library data and using one of the several provided PoC codes to attack the massive amount of services available on the internet. One of the more complicated issues is that the OpenSSL patches were not in-line with the upstream of large Linux flavors. We have had a opportunity to review the behavior of the exploit and have come up with the following IDS signatures to be deployed for detection."

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Yahoo DMARC Implementation Breaks Most Mailing Lists

Wed, 09/04/2014 - 21:53
pdclarry writes: "On April 8, Yahoo implemented a new DMARC policy that essentially bars any Yahoo user from accessing mailing lists hosted anywhere except on Yahoo and Google. While Yahoo is the initiator, it also affects Comcast, AT&T, Rogers, SBCGlobal, and several other ISPs. Internet Engineering Council expert John R. Levine, a specialist in email infrastructure and spam filtering, said, 'Yahoo breaks every mailing list in the world including the IETF's' on the Internet Engineering Task Force (IETF) list. DMARC (Domain-based Message Authentication, Reporting & Conformance) is a two-year-old proposed standard previously discussed on Slashdot that is intended to curb email abuse, including spoofing and phishing. Unfortunately, as implemented by Yahoo, it claims most mailing list users as collateral damage. Messages posted to mailing lists (including listserv, mailman, majordomo, etc) by Yahoo subscribers are blocked when the list forwards them to other Yahoo (and other participating ISPs) subscribers. List members not using Yahoo or its partners are not affected and will receive posts from Yahoo users. Posts from non-Yahoo users are delivered to Yahoo members. So essentially those suffering the most are Yahoo's (and Comcast's, and AT&T's, etc) own customers. The Hacker News has details about why DMARC has this effect on mailing lists. Their best proposed solution is to ban Yahoo email users from mailing lists and encourage them to switch to other ISPs. Unfortunately, it isn't just Yahoo, although they are getting the most attention."

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LHCb Confirms Existence of Exotic Hadrons

Wed, 09/04/2014 - 19:45
An anonymous reader sends this news from CERN: "The Large Hadron Collider beauty (LHCb) collaboration today announced results that confirm the existence of exotic hadrons – a type of matter that cannot be classified within the traditional quark model. Hadrons are subatomic particles that can take part in the strong interaction – the force that binds protons inside the nuclei of atoms. Physicists have theorized since the 1960s, and ample experimental evidence since has confirmed, that hadrons are made up of quarks and antiquarks that determine their properties. A subset of hadrons, called mesons, is formed from quark-antiquark pairs, while the rest – baryons – are made up of three quarks. ... The Belle Collaboration reported the first evidence for the Z(4430) in 2008. They found a tantalizing peak in the mass distribution of particles that result from the decays of B mesons. Belle later confirmed the existence of the Z(4430) with a significance of 5.2 sigma on the scale that particle physicists use to describe the certainty of a result. LHCb reports a more detailed measurement of the Z(4430) that confirms that it is unambiguously a particle, and a long-sought exotic hadron at that. They analyzed more than 25,000 decays of B mesons selected from data from 180 trillion (180x10^12) proton-proton collisions in the Large Hadron Collider."

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Navy Debuts New Railgun That Launches Shells at Mach 7

Wed, 09/04/2014 - 19:02
Jeremiah Cornelius writes: "The U.S. Navy's new railgun technology, developed by General Atomics, uses the Lorentz force in a type of linear, electric motor to hurl a 23-pound projectile at speeds exceeding Mach 7 — in excess of 5,000 mph. The weapon has a range of 100 miles and doesn't require explosive warheads. 'The electromagnetic railgun represents an incredible new offensive capability for the U.S. Navy,' says Rear Adm. Bryant Fuller, the Navy's chief engineer. 'This capability will allow us to effectively counter a wide range of threats at a relatively low cost, while keeping our ships and sailors safer by removing the need to carry as many high-explosive weapons.' Sea trials begin aboard an experimental Navy catamaran, the USNS Millinocket, in 2016."

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Ask Slashdot: Which NoSQL Database For New Project?

Wed, 09/04/2014 - 10:12
DorianGre writes: "I'm working on a new independent project. It involves iPhones and Android phones talking to PHP (Symfony) or Ruby/Rails. Each incoming call will be a data element POST, and I would like to simply write that into the database for later use. I'll need to be able to pull by date or by a number of key fields, as well as do trend reporting over time on the totals of a few fields. I would like to start with a NoSQL solution for scaling, and ideally it would be dead simple if possible. I've been looking at MongoDB, Couchbase, Cassandra/Hadoop and others. What do you recommend? What problems have you run into with the ones you've tried?"

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Navy Creates Fuel From Seawater

Wed, 09/04/2014 - 07:20
New submitter lashicd sends news that the U.S. Naval Research Laboratory has announced a successful proof-of-concept demonstration of converting seawater to liquid hydrocarbon fuel. They used seawater to provide fuel for a small replica plan running a two-stroke internal combustion engine. "Using an innovative and proprietary NRL electrolytic cation exchange module (E-CEM), both dissolved and bound CO2 are removed from seawater at 92 percent efficiency by re-equilibrating carbonate and bicarbonate to CO2 and simultaneously producing H2. The gases are then converted to liquid hydrocarbons by a metal catalyst in a reactor system. ... NRL has made significant advances in the development of a gas-to-liquids (GTL) synthesis process to convert CO2 and H2 from seawater to a fuel-like fraction of C9-C16 molecules. In the first patented step, an iron-based catalyst has been developed that can achieve CO2 conversion levels up to 60 percent and decrease unwanted methane production in favor of longer-chain unsaturated hydrocarbons (olefins). These value-added hydrocarbons from this process serve as building blocks for the production of industrial chemicals and designer fuels."

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Isolated Tribes Die Shortly After We Meet Them

Wed, 09/04/2014 - 05:15
Daniel_Stuckey writes: "It's a story we all know — Christopher Columbus discovers America, his European buddies follow him, they meet the indigenous people living there, they indigenous people die from smallpox and guns and other unknown diseases, and the Europeans get gold, land, and so on. It's still happening today in Brazil, where 238 indigenous tribes have been contacted in the last several decades, and where between 23 and 70 uncontacted tribes are still living. A just-published report that takes a look at what happens after the modern world comes into contact with indigenous peoples isn't pretty: Of those contacted, three quarters went extinct. Those that survived saw mortality rates up over 80 percent. This is grim stuff."

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A 2560x1440 VR Headset That's Mobile

Wed, 09/04/2014 - 01:04
New submitter oldmildog writes: "GameFace Labs may very well be the furthest along in the quest to create a mobile VR headset. It's based on Android, and their latest prototype is the first VR headset (mobile or tethered) to include a 2560x1440 display, with 78% more pixels than 1080p based VR headsets like the Oculus Rift DK2. CEO Ed Mason said, 'The upgrade to 1280 x 1440 per eye is monumental. Individual pixels are hard to detect at first glance, making it a more immersive and comfortable experience in every single game and experience that we've tried. A lot of the ‘presence’ described by devs at the Valve [prototype VR headset] demonstration can be attributed to their use of higher resolution (and lower persistence) panels, which has a noticeable impact in suspending disbelief and tricking the brain."

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Zombie Plants Help To Spread Bacterial Pathogen

Wed, 09/04/2014 - 00:24
bmahersciwriter writes: "We've all heard stories about how parasites can 'zombify' organisms, getting them to mindlessly protect a brood or infect their peers. Now UK researchers have figured out how one bacterial pathogen co-opts the behavior of a plant, causing it to attract sap-sucking insects that help the bacteria spread to other plants. From the story in Nature News: 'The plant appears alive, but it's only there for the good of the pathogen,' says plant pathologist Saskia Hogenhout from the John Innes Centre in Norwich, UK. 'In an evolutionary sense, the plant is dead and will not produce offspring.' 'Many might balk at the concept of a zombie plant because the idea of plants behaving is strange,' says David Hughes, a parasitologist at Pennsylvania State University in University Park. 'But they do, and since they do, why wouldn't parasites have evolved to take over their behavior, as they do for ants and crickets?'"

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