Become a fan of Slashdot on Facebook

 



Forgot your password?
typodupeerror
×
Privacy

Digital Photos Give Away a Camera's Make and Model 260

holy_calamity writes "Engineers at Polytechnic University Brooklyn have discovered that digital snaps shorn of any metadata still reveal the make and model of camera used to take them. It is possible to work backwards from the relationships of neighboring pixel values in a shot to identify the model-specific demosaicing algorithm that combines red, green, and blue pixels on the sensor into color image pixels. Forensics teams are already licking their chops."
NASA

Urine Passes NASA Taste Test 404

Ponca City, We love you writes "Astronauts flying aboard space shuttle Endeavour are delivering a device to the International Space Station that may leave you wondering if NASA is taking recycling too far. Among the ship's cargo is a water regeneration system that distills, filters, ionizes, and oxidizes wastewater — including urine — into fresh water for drinking or, as one astronaut puts it, 'will make yesterday's coffee into today's coffee.' The US space agency spent $250M for the water recycling equipment but with the space shuttles due to retire in two years, NASA needed to make sure the station crew would have a good supply of fresh water. The Environmental Control and Life Support Systems uses a purification process called vapor compression distillation: urine is boiled until the water in it turns to steam. In space, there's an additional challenge: steam doesn't rise, so the entire distillation system is spun to create artificial gravity to separate the steam from the brine. The water has been thoroughly tested on Earth, including blind taste tests that pitted recycled urine with similarly treated tap water. 'Some people may think it's downright disgusting, but if it's done correctly, you process water that's purer than what you drink here on Earth,' said Endeavour astronaut Heidemarie Stefanyshyn-Piper."
Data Storage

How To Verify CD-R Data Retention Over Time? 303

Peter (Professor) Fo writes "I've recently had two CD-Rs reported to me as faulty which are just 3 years old. This is worrying — I suspect the failure rate for this batch could be 10%. When researching CD longevity there is old and unreliable information; pious 'how to cosset your discs so they last 100 years' blurb; and endless discussions of what sort of dye to use, don't use cheap media, burn slower (or don't), but not much by way of hard facts besides there's a lot of data loss going on. Does anyone know of a generic utility (win or *nix would suit me) that can map sector readability/error rates of CDs? I'd like to measure decay over time in my environment with my media and my other variables; and I expect others would too."
Operating Systems

OpenBSD 4.4 Released 235

Linux blog writes "The new version of OpenBSD is available for download. There are lots of nifty new features to try out including OpenSSH 5.1 with chroot(2) support, Xenocara, Gnome 2.20.3, KDE 3.5.8, etc. Machines using the UltraSPARC IV/T1/T2 and Fujitsu SPARC64-V/VI/VII are now supported. It seems amazing to me that they keep delivering these new results on a six-month release cycle."
Google

Google Adopts, Forks OpenID 1.0 316

An anonymous reader writes "Right on the heels of Microsoft's adoption of the OpenID protocol by announcing their intention to enable OpenID authentication against all Live IDs, Google has announced their intention to join the growing list of OpenID authentication providers. Except it turns out they're using their own version of OpenID that is incompatible with everyone else. It seems that Google will be using their own 'improved' version of OpenID (based upon research and user feedback of the OpenID system) which isn't backwards compatible with OpenID 1.0/2.0, in hopes of improving end-user experience at the cost of protocol compatibility and complexity."
Operating Systems

What Normal Users Can Expect From Ubuntu 8.10 511

notthatwillsmith writes "With Ubuntu 8.10 due to be released in just a few days, Maximum PC pored through all the enhancements, updates, and new features that are bundled into the release of Intrepid Ibex and separated out the new features that are most exciting for Linux desktop users. Things to be excited about? With new versions of GNOME and X.Org, there's quite a bit, ranging from the context-sensitive Deskbar search to an audio and video compatible SIP client to the new Network Manager (manage wired, Wi-Fi, VPN, and cellular broadband connections in one place)."
Security

Reliable, Free Anti-Virus Software? 586

oahazmatt writes "Some time ago my wife was having severe issues on her laptop. (A Dell Inspiron, if that helps.) I eventually found the cause to be McAfee, which took about an hour to remove fully. I installed AVG on her system to replace McAfee, but we have since found that AVG is causing problems with her laptop's connection to our wireless network. She's not thrilled about a wired connection as the router is on the other end of the house. We're looking for some good, open-source or free personal editions of anti-virus software. So, who on Slashdot trusts what?" When school required a Windows laptop, I used Clam AV, and the machine seemed to do as well as most classmates'. What have you found that works?
Supercomputing

Greenspan Tells Congress Bad Data Hurt Wall Street 496

CWmike writes "Former Reserve Bank chairman Alan Greenspan has long praised technology as a tool to limit risks in financial markets. In 2005, he said better risk scoring by high-performance computing made it possible for lenders to extend credit to subprime borrowers. But today Greenspan told Congress that the data fed into financial systems was often a case of garbage in, garbage out. Christopher Cox, chairman of the Securities and Exchange Commission, told the committee that bad code led the credit rating agencies to give AAA ratings to mortgage-backed securities that didn't deserve them. Explaining in his testimony what failed, Cox noted a 2004 decision to rely on the computer models for assessing risks — a decision that essentially outsourced regulatory duties to Wall Street firms themselves."
Security

UK Court Rejects Encryption Key Disclosure Defense 708

truthsearch writes "Defendants can't deny police an encryption key because of fears the data it unlocks will incriminate them, a British appeals court has ruled. The case marked an interesting challenge to the UK's Regulation of Investigatory Powers Act (RIPA), which in part compels someone served under the act to divulge an encryption key used to scramble data on a PC's hard drive. The appeals court heard a case in which two suspects refused to give up encryption keys, arguing that disclosure was incompatible with the privilege against self incrimination. In its ruling, the appeals court said an encryption key is no different than a physical key and exists separately from a person's will."
Image

Researchers Claim To Be Able To Determine Political Leaning By How Messy You Are 592

According to a study to be published in The Journal of Political Psychology, you can tell someone's political affiliation by looking at the condition of their offices and bedrooms. Conservatives tend to be neat and liberals love a mess. Researchers found that the bedrooms and offices of liberals tend to be colorful and full of books about travel, ethnicity, feminism and music, along with music CDs covering folk, classic and modern rock, as well as art supplies, movie tickets and travel memorabilia. Their conservative contemporaries, on the other hand, tend to surround themselves with calendars, postage stamps, laundry baskets, irons and sewing materials. Their bedrooms and offices are well lit and decorated with sports paraphernalia and flags — especially American ones. Sam Gosling, an associate professor of psychology at the University of Texas at Austin, says these room cues are "behavioral residue." The findings are just the latest in a series of recent attempts to unearth politics in personality, the brain and DNA. I, for one, support a woman's right to clean.
Cellphones

Software Holds Cell Phone Calls While Driving 452

An anonymous reader writes "Canadian company Aegis Mobility has developed software that detects if a cell phone is moving at 'car' speeds. If so, the software, DriveAssistT, will alert the cellular network, telling it to hold calls and text messages until the drive is over. Calls are not blocked entirely; callers will be notified that the person appears to be driving, but they can still leave an emergency voice mail, which will be sent through immediately."
The Almighty Buck

Report Indicates Widespread H-1B Visa Fraud 397

Vrst1013 notes a Business Week account of a government report examining fraud in the H-1B program. The US Citizenship and Immigration Services just released a report to members of the Senate Judiciary Committee examining issues with fraud and technical violations within this program. Based on a sample size of 246 H-1B petitions, 13.4 percent showed fraud and 7.3 percent showed technical violations, for an overall violation rate of 20.7 percent. There was slso evidence of payment below the prevailing wage, offers of non-existent jobs, and fraudulent documentation. "'The report makes it clear that the H-1B program is rife with abuse and misuse,' says Ron Hira, [a professor] at the Rochester Institute of Technology ... However, both Presidential candidates, Senator Barack Obama and Senator John McCain, have said they support expanding the program."
Sci-Fi

Paul Krugman Awarded Nobel Prize For Economics 425

zogger writes in his journal, "The guy who put together the concept of geographical location combined with cheap transportation leading to 'like trades with like' and the rise of superindustrial trading blocs has won the Nobel economics science prize. He's a bigtime critic of a lot of this administration's policies, and is unabashedly an FDR-economy styled fella. Here is his blog at the NYTimes." Reader yoyoq adds that Krugman's career choice was inspired by reading Asimov's Foundation series at a young age.
Patents

Steve Jobs Patents "The Dock" 580

theodp writes "If you're a PC, you may be unfamiliar with The Dock, the bar of icons that sits at the bottom or side of a Mac and provides easy access to Apple applications. But don't count on it becoming a standard on the PC. On Tuesday, the USPTO awarded Apple — and inventor Steve Jobs — a patent for their User Interface for Providing Consolidation and Access, aka 'The Dock,' after a rather lengthy nine-year wait."
The Courts

iPhone Antitrust and Computer Fraud Claims Upheld 273

LawWatcher writes "On October 1, 2008, a federal judge in California upheld a class action claiming that Apple and AT&T Mobility's five-year exclusive voice and data service provider agreement for the iPhone violates the anti-monopoly provisions of the antitrust laws. The court also ruled that Apple may have violated federal and California criminal computer fraud and abuse statutes by releasing version 1.1.1 of its iPhone operating software when Apple knew that doing so would damage or destroy some iPhones that had been 'unlocked' to enable use of a carrier other than AT&T."

Slashdot Top Deals

A list is only as strong as its weakest link. -- Don Knuth

Working...