Check out the new SourceForge HTML5 internet speed test! No Flash necessary and runs on all devices. ×
Books

Ask Slashdot: Have You Read 'The Art of Computer Programming'? (wikipedia.org) 95

In 1962, 24-year-old Donald Knuth began writing The Art of Computer Programming, publishing three volumes by 1973, with volume 4 arriving in 2005. (Volume 4A appeared in 2011, with new paperback fascicles planned for every two years, and fascicle 6, "Satisfiability," arriving last December). "You should definitely send me a resume if you can read the whole thing," Bill Gates once said, in a column where he described working through the book. "If somebody is so brash that they think they know everything, Knuth will help them understand that the world is deep and complicated."

But now long-time Slashdot reader Qbertino has a question: I've had The Art of Computer Programming on my book-buying list for just about two decades now and I'm still torn...about actually getting it. I sometimes believe I would mutate into some programming demi-god if I actually worked through this beast, but maybe I'm just fooling myself...

Have any of you worked through or with TAOCP or are you perhaps working through it? And is it worthwhile? I mean not just for bragging rights. And how long can it reasonably take? A few years?

Share your answers and experiences in the comments. Have you read The Art of Computer Programming?
Open Source

Linux Mint 18.1 'Serena' BETA Ubuntu-based Operating System Now Available For Download (betanews.com) 66

BrianFagioli shares his story on Beta News: Feeling fatigued by Windows 10 and its constant updates and privacy concerns? Can't afford one of those beautiful new MacBook Pro laptops? Don't forget, Linux-based desktop operating systems are just a free download away, folks!

If you do decide to jump on the open source bandwagon, a good place to start is Linux Mint. Both the Mate and Cinnamon desktop environments should prove familiar to Windows converts, and since it is based on Ubuntu, there is a ton of compatible packages. Today, the first beta of Linux Mint 18.1 'Serena' becomes available for download.

Here's the release notes for both Cinammon and MATE.
Cloud

Canonical Sues Cloud Provider Over 'Unofficial' Ubuntu Images (ostatic.com) 25

An anonymous reader quotes OStatic's update on Canonical's lawsuit against a cloud provider: Canonical posted Thursday that they've been in a dispute with "a European cloud provider" over the use of their own homespun version of Ubuntu on their cloud servers. Their implementation disables even the most basic of security features and Canonical is worried something bad could happen and it'd reflect badly back on them... They said they've spent months trying to get the unnamed provider to use the standard Ubuntu as delivered to other commercial operations to no avail. Canonical feels they have no choice but to "take legal steps to remove these images." They're sure Red Hat and Microsoft wouldn't be treated like this.
Mark Shuttleworth, the founder of Ubuntu, wrote in his blog post that Ubuntu is "the leading cloud OS, running most workloads in public clouds today," whereas these homegrown images "are likely to behave unpredictably on update in weirdly creative and mysterious ways... We hear about these issues all the time, because users assume there is a problem with Ubuntu on that cloud; users expect that 'all things that claim to be Ubuntu are genuine', and they have a right to expect that...

"To count some of the ways we have seen home-grown images create operational and security nightmares for users: clouds have baked private keys into their public images, so that any user could SSH into any machine; clouds have made changes that then blocked security updates for over a week... When things like this happen, users are left feeling let down. As the company behind Ubuntu, it falls to Canonical to take action."
Security

70 Laptops Got Left Behind At An Airport Security Checkpoint In One Month (bravotv.com) 88

America's Transportation Security Administration has been making some surprising announcements on social media. An anonymous reader writes: A TSA spokesperson says 70 laptops were left behind in just one month at an airport security checkpoint in Newark. "And yes, there are plenty of shiny MacBooks in that pile," reported BravoTV, "which can cost in the $2,000 range new." The TSA shared an image of the 70 laptops on their Instagram page and on Twitter, prompting at least one mobile project designer to reclaim his laptop. "The most common way laptops are forgotten is when traveler's stack a bin on top of the bin their laptop is in," the TSA warns. "Out of sight out of mind."
The TSA is also sharing pictures on social media of the 70 guns they confiscated at security checkpoints in one week in November, reporting they've also confiscated a blowtorch, batarangs, and a replica of that baseball bat from "The Walking Dead". They're reporting they found 33 loaded firearms in carry-on luggage in one week, and remind readers that gun-carrying passengers "can face a penalty as high as $11,000. This is a friendly reminder to please leave these items at home."
United States

Sysadmin Gets Two Years In Prison For Sabotaging ISP (bleepingcomputer.com) 84

After being let go over a series of "personal issues" with his employer, things got worse for 26-year-old network administrator Dariusz J. Prugar, who will now have to spend two years in prison for hacking the ISP where he'd worked. An anonymous reader writes: Prugar had used his old credentials to log into the ISP's network and "take back" some of the scripts and software he wrote... "Seeking to hide his tracks, Prugar used an automated script that deleted various logs," reports Bleeping Computer. "As a side effect of removing some of these files, the ISP's systems crashed, affecting over 500 businesses and over 5,000 residential customers."

When the former ISP couldn't fix the issue, they asked Prugar to help. "During negotiations, instead of requesting money as payment, Prugar insisted that he'd be paid using the rights to the software and scripts he wrote while at the company, software which was now malfunctioning, a week after he left." This tipped off the company, who detected foul play, contacted the FBI and rebuilt its entire network.

Six years later, Prugar was found guilty after a one-week jury trial, and was ordered by the judge to pay $26,000 in restitution to the ISP (which went out of business in October of 2015). Prugar's two-year prison sentence begins December 27.
Government

Virginia Police Spent $500K For An Ineffective Cellphone Surveillance System (muckrock.com) 33

Cell-site simulators can intercept phone calls and even provide locations (using GPS data). But Virginia's state police force just revealed details about their actual use of the device -- and it's not pretty. Long-time Slashdot reader v3rgEz writes: In 2014, the Virginia State Police spent $585,265 on a specially modified Suburban outfitted with the latest and greatest in cell phone surveillance: the DRT 1183C, affectionately known as the DRTbox. But according to logs uncovered by public records website MuckRock, the pricey ride was only used 12 times — and only worked seven of those times.
According to Virginia's ACLU director, "each of the 12 uses cost almost $50,000, and only 4 of them resulted in an arrest [raising] a significant question whether the more than half million dollars spent on the device and the vehicle...was a wise investment of public funds."
The Media

Are We Seeing Propaganda About Russian Propaganda? (rollingstone.com) 229

MyFirstNameIsPaul was one of several readers who spotted this disturbing instance of fake news about fake news. An anonymous reader writes: Last week the Washington Post described "independent researchers" who'd identified "more than 200 websites as routine peddlers of Russian propaganda" that they estimated were viewed more than 200 million times on Facebook. But the researchers insisted on remaining anonymous "to avoid being targeted by Russia's legions of skilled hackers," and when criticized on Twitter, responded "Awww, wook at all the angwy Putinists, trying to change the subject -- they're so vewwy angwy!!"

The group "seems to have been in existence for just a few months," writes Rolling Stone's Matt Taibbi, calling the Post's article an "astonishingly lazy report". (Chris Hedges, who once worked on a Pulitzer Prize-winning team at the New York Times, even found his site Truthdig on the group's dubious list of over 200 "sites that reliably echo Russian propaganda," along with other long-standing sites like Zero Hedge, Naked Capitalism, and the Ron Paul Institute for Peace and Prosperity.) "By overplaying the influence of Russia's disinformation campaign, the report also plays directly into the hands of the Russian propagandists that it hopes to combat," complains Adrian Chen, who in 2015 documented real Russian propaganda efforts which he traced to "a building in St. Petersburg where hundreds of young Russians worked to churn out propaganda."

The Post's article was picked up by other major news outlets (including USA Today), and included an ominous warning that "The sophistication of the Russian tactics may complicate efforts by Facebook and Google to crack down on 'fake news'."
United Kingdom

For The UK's 'Snoopers' Charter', Politicians Voted Themselves An Exemption (independent.co.uk) 103

The "Snoopers' Charter" passed in the U.K. greatly expands the government's surveillance power. But before they'd enact the new Investigatory Powers Act, Britain's elected officials first voted to make themselves exempt from it. Sort of. An anonymous reader writes: While their internet browsing history will still be swept up, just like everyone else's, no one will ever be able to access it without specific approval from the Prime Minister. And according to The Independent, "That rule applies not only to members of the Westminster parliament but also politicians in the devolved assembly and members of the European Parliament."
The article adds that the exemption was the very first amendment they approved for the legislation. And for a very long time, the only amendment.
United Kingdom

UK Health Secretary Urges Social Media Companies To Block Cyberbullying And Underaged Sexting (betanews.com) 63

Mark Wilson shares his article on Beta News: Health secretary Jeremy Hunt has made calls for technology companies and social media to do more to tackle the problems of cyberbullying, online intimidation and -- rather specifically -- under-18-year-olds texting sexually explicit images. Of course, he doesn't have the slightest idea about how to go about tackling these problems, but he has expressed his concern so that, in conjunction with passing this buck to tech companies, should be enough, right?
Hunt apparently believes there's already a technology which can identify sexually explicit photos, and that social media networks should now also develop algorithms to identify and block cyberbullying, an idea the Guardian called "sadly laughable."

"Is the blanket censorship of non-approved communications for all under 18s -- something that goes far further than even the Great Firewall of China -- really the kind of thing a government minister should be able to idly suggest in 2016?"
Security

Crooks Need Just Six Seconds To Guess A Credit Card Number (independent.co.uk) 99

schwit1 quotes The Independent: Criminals can work out the card number, expiration date, and security code for a Visa debit or credit card in as little as six seconds using guesswork, researchers have found... Fraudsters use a so-called Distributed Guessing Attack to get around security features put in place to stop online fraud, and this may have been the method used in the recent Tesco Bank hack...

According to a study published in the academic journal IEEE Security & Privacy, fraudsters could use computers to systematically fire different variations of security data at hundreds of websites simultaneously. Within seconds, by a process of elimination, the criminals could verify the correct card number, expiration date and the three-digit security number on the back of the card.

One of the researchers explained this attack combines two weaknesses into one powerful attack. "Firstly, current online payment systems do not detect multiple invalid payment requests from different websites... Secondly, different websites ask for different variations in the card data fields to validate an online purchase. This means it's quite easy to build up the information and piece it together like a jigsaw puzzle."
Open Source

Devuan's Systemd-Free Linux Hits Beta 2 (theregister.co.uk) 258

Long-time Slashdot reader Billly Gates writes, "For all the systemd haters who want a modern distro feel free to rejoice. The Debian fork called Devuan is almost done, completing a daunting task of stripping systemd dependencies from Debian." From The Register: Devuan came about after some users felt [Debian] had become too desktop-friendly. The change the greybeards objected to most was the decision to replace sysvinit init with systemd, a move felt to betray core Unix principles of user choice and keeping bloat to a bare minimum. Supporters of init freedom also dispute assertions that systemd is in all ways superior to sysvinit init, arguing that Debian ignored viable alternatives like sinit, openrc, runit, s6 and shepherd. All are therefore included in Devuan.
Devuan.org now features an "init freedom" logo with the tagline, "watching your first step. Their home page now links to the download site for Devuan Jessie 1.0 Beta2, promising an OS that "avoids entanglement".
United States

The US Government Funds A War On Online Fake News (bangordailynews.com) 330

An anonymous reader quotes the Washington Post: Congressional negotiators on Wednesday approved an initiative to track and combat foreign propaganda amid growing concerns that Russian efforts to spread "fake news" and disinformation threaten U.S. national security. The measure, part of the National Defense Authorization Act approved by a conference committee, calls on the State Department to lead government-wide efforts to identify propaganda and counter its effects. The authorization is for $160 million over two years...

The Senate Intelligence Committee, meanwhile, has approved language in the fiscal year 2017 intelligence authorization bill calling for new executive branch efforts to combat what it characterized as "active measures" by Russia to manipulate people and governments through front groups, covert broadcasting or "media manipulation." "There is definitely bipartisan concern about the Russian government engaging in covert influence activities of this nature," Sen. Ron Wyden, D-Ore., a member of the Senate Intelligence Committee, said in a statement. "If you read section 501 of this year's intelligence authorization bill, it directs the President to set up an interagency committee to 'counter active measures by Russia to exert covert influence over peoples and governments.'"

Several senators on the intelligence committee also asked President Obama to declassify any information relating to the Russian government and the U.S. election.
The Courts

It Will Soon Be Illegal To Punish US Customers Who Criticize Businesses Online (arstechnica.com) 81

An anonymous reader writes: Congress has passed a law protecting the right of U.S. consumers to post negative online reviews without fear of retaliation from companies. The bipartisan Consumer Review Fairness Act was passed by unanimous consent in the US Senate, a Senate Commerce Committee announcement said. The bill, introduced in 2014, was already approved by the House of Representatives and now awaits President Obama's signature.

The Consumer Review Fairness Act -- full text available here -- voids any provision in a form contract that prohibits or restricts customers from posting reviews about the goods, services, or conduct of the company providing the product or service. It also voids provisions that impose penalties or fees on customers for posting online reviews as well as those that require customers to give up the intellectual property rights related to such reviews.

Mozilla

VM-Neutral Node.js API Unveiled, As NodeSource Collaborates With Microsoft, Mozilla, Intel and IBM (medium.com) 28

An anonymous reader writes: This week saw the first proof of concept for Node.js API (or NAPI for short), "making module maintainers' lives easier by defining a stable module API that is independent from changes in [Google's JavaScript engine] V8 and allowing modules to run against newer versions of Node.js without recompilation." Their announcement cites both the efforts of the Node.js API working group and of ChakraCore, the core part of the Chakra Javascript engine that powers Microsoft Edge.

And there was also a second announcement -- that the Node.js build system "will start producing nightly node-chakracore builds, enabling Node.js to be used with the ChakraCore JavaScript engine. "These initial efforts are stepping stones to make Node.js VM-neutral, which would allow more opportunities for Node.js in IoT and mobile use cases as well as a variety of different systems."

One IBM runtime developer called it "a concrete step toward the strategic end goal of VM neutrality," and the Node.js Foundation believes that the API will ultimately result in "more modules to choose from, and more stability with modules without the need to continually upgrade."
EU

Drupal Event Apologizes For Giving Out Copies Of Playboy (drupalcamp.de) 229

An anonymous reader writes: The organization team for a regional Drupal event apologized Thursday for distributing copies of Playboy to attendees. The magazines were distributed in welcome bags, according to a statement from the organizers of DrupalCamp Munich, and "were provided by Burda, a major German publisher, who also provided other technical magazines as part of their sponsorship. These magazines were approved for inclusion by the camp organizers.

"At the time, we thought it would be a good idea, as playboy.de was one of the first major Drupal 8 websites ever released. Upon reflection, this wasn't the best idea, and the magazines have been removed... It was a decision made in poor taste, and we regret it.

The inclusion of the magazine had attracted criticism on Twitter from both male and female developers, with one writing sarcastically, "Dunno about you, but I only read playboy.de for the Drupal code."
Chrome

Chrome 55 Now Blocks Flash, Uses HTML5 By Default (bleepingcomputer.com) 92

An anonymous reader quotes Bleeping Computer: Chrome 55, released earlier this week, now blocks all Adobe Flash content by default, according to a plan set in motion by Google engineers earlier this year... While some of the initial implementation details of the "HTML5 By Default" plan changed since then, Flash has been phased out in favor of HTML5 as the primary technology for playing multimedia content in Chrome.

Google's plan is to turn off Flash and use HTML5 for all sites. Where HTML5 isn't supported, Chrome will prompt users and ask them if they want to run Flash to view multimedia content. The user's option would be remembered for subsequent visits, but there's also an option in the browser's settings section, under Settings > Content Settings > Flash > Manage Exceptions, where users can add the websites they want to allow Flash to run by default.

Exceptions will also be made automatically for your more frequently-visited sites -- which, for many users, will include YouTube. And Chrome will continue to ship with Flash -- as well as an option to re-enable Flash on all sites.
Encryption

Encryption Backdoor Sneaks Into UK Law (theregister.co.uk) 121

Coisiche found a disturbing article from The Register about the U.K.'s new "Snoopers' Charter" law that has implications for tech companies around the world: Among the many unpleasant things in the Investigatory Powers Act that was officially signed into law this week, one that has not gained as much attention is the apparent ability for the U.K. government to undermine encryption and demand surveillance backdoors... As per the final wording of the law, comms providers on the receiving end of a "technical capacity notice" will be obliged to do various things on demand for government snoops -- such as disclosing details of any system upgrades and removing "electronic protection" on encrypted communications. Thus, by "technical capability," the government really means backdoors and deliberate security weaknesses so citizens' encrypted online activities can be intercepted, deciphered and monitored... At the end of the day, will the U.K. security services be able to read your email, your messages, your posts and private tweets, and your communications if they believe you pose a threat to national security? Yes, they will.
The bill added the Secretaries of State as a required signatory to the "technical capacity" notices, which "introduces a minor choke-point and a degree of accountability." But the article argues the law ultimately anticipates the breaking of encryption, and without customer notification. "The U.K. government can certainly insist that a company not based in the U.K. carry out its orders -- that situation is specifically included in the new law -- but as to whether it can realistically impose such a requirement, well, that will come down to how far those companies are willing to push back and how much they are willing to walk away from the U.K. market."
Republicans

Of 8 Tech Companies, Only Twitter Says It Would Refuse To Help Build Muslim Registry For Trump (theintercept.com) 533

On the campaign trail last year, President-elect Donald Trump said he would consider requiring Muslim-Americans to register with a government database. While he has back-stepped on a number of campaign promises after being elected president, Trump and his transition team have recently resurfaced the idea to create a national Muslim registry. In response, The Intercept contacted nine of the "most prominent" technology companies in the United States "to ask if they would sell their services to help create a national Muslim registry." Twitter was the only company that responded with "No." The Intercept reports: Even on a purely hypothetical basis, such a project would provide American technology companies an easy line to draw in the sand -- pushing back against any effort to track individuals purely (or essentially) on the basis of their religious beliefs doesn't take much in the way of courage or conviction, even by the thin standards of corporate America. We'd also be remiss in assuming no company would ever tie itself to such a nakedly evil undertaking: IBM famously helped Nazi Germany computerize the Holocaust. (IBM has downplayed its logistical role in the Holocaust, claiming in a 2001 statement that "most [relevant] documents were destroyed or lost during the war.") With all this in mind, we contacted nine different American firms in the business of technology, broadly defined, with the following question: "Would [name of company], if solicited by the Trump administration, sell any goods, services, information, or consulting of any kind to help facilitate the creation of a national Muslim registry, a project which has been floated tentatively by the president-elect's transition team?" After two weeks of calls and emails, only three companies provided an answer, and only one said it would not participate in such a project. A complete tally is below.

Facebook: No answer. Twitter: "No," and a link to this blog post, which states as company policy a prohibition against the use, by outside developers, of "Twitter data for surveillance purposes. Period." Microsoft: "We're not going to talk about hypotheticals at this point," and a link to a company blog post that states that "we're committed to promoting not just diversity among all the men and women who work here, but [...] inclusive culture" and that "it will remain important for those in government and the tech sector to continue to work together to strike a balance that protects privacy and public safety in what remains a dangerous time." Google: No answer. Apple: No answer. IBM: No answer. Booz Allen Hamilton: Declined to comment. SRA International: No answer.

Businesses

Survey Says: Elon Musk Is Most Admired Tech Leader, Topping Bezos and Zuckerberg (teslarati.com) 116

First Round Capital conducted a poll of 700 tech company founders and found Elon Musk to be the most admired leader in the technology industry. Elon Musk received 23 percent of the votes; 10 percent said Amazon's Jeff Bezos, 6 percent said Facebook founder and CEO Mark Zuckerberg and 5 percent wrote in Steve Jobs. First Round writes: "We launched State of Startups to capture what it means to be an entrepreneur. We asked the leaders of venture-backed companies about everything from the fundraising environment to their working relationships with their co-founders to their office's price per square foot. [...] Once again, we asked founders to write in which current tech leader they admire the most and we tallied 125 names. The Tesla and SpaceX leader held firm at the top spot (23%)..." Teslarati reports: While the survey did not ask respondents to explain their choice, it is safe to assume that Elon's propensity for setting lofty and visionary goals, and then being able to execute on them, is one trait admired most by tech founders. Most recently, Musk moved the scheduled start of production for the upcoming Model 3 midsize sedan forward by a full two years. Tesla also recently celebrated a record-setting third quarter and has been moving aggressively to close the second half of this year with 50,000 cars delivered. The company has announced a series of sweeteners to motivate people to order and take delivery of new vehicles before the end of the year. Unlimited Supercharger access for long distance travel and a, then, upcoming price hike on its entry level Model S 60, announced by the Palo Alto-based electric car maker and energy company, were incentives to stimulate sales. With plans to increase annual vehicle production by a factor of ten to twenty-fold by the end of the decade, send humans to mars and transform the energy sector, Musk's innovative solutions to rewrite humanity as we know it joins an elite rank held by few genius inventors and industrialists who have gone on to change the world.
Earth

Alien Life Could Thrive In the Clouds of Failed Stars (sciencemag.org) 66

sciencehabit writes: There's an abundant new swath of cosmic real estate that life could call home -- and the views would be spectacular. Floating out by themselves in the Milky Way galaxy are perhaps a billion cold brown dwarfs, objects many times as massive as Jupiter but not big enough to ignite as a star. According to a new study, layers of their upper atmospheres sit at temperatures and pressures resembling those on Earth, and could host microbes that surf on thermal updrafts. The idea expands the concept of a habitable zone to include a vast population of worlds that had previously gone unconsidered. "You don't necessarily need to have a terrestrial planet with a surface," says Jack Yates, a planetary scientist at the University of Edinburgh in the United Kingdom, who led the study. Atmospheric life isn't just for the birds. For decades, biologists have known about microbes that drift in the winds high above Earth's surface. And in 1976, Carl Sagan envisioned the kind of ecosystem that could evolve in the upper layers of Jupiter, fueled by sunlight. You could have sky plankton: small organisms he called "sinkers." Other organisms could be balloonlike "floaters," which would rise and fall in the atmosphere by manipulating their body pressure. In the years since, astronomers have also considered the prospects of microbes in the carbon dioxide atmosphere above Venus's inhospitable surface. Yates and his colleagues set out to update Sagan's calculations and to identify the sizes, densities, and life strategies of microbes that could manage to stay aloft in the habitable region of an enormous atmosphere of predominantly hydrogen gas. On such a world, small sinkers like the microbes in Earth's atmosphere or even smaller would have a better chance than Sagan's floaters, the researchers will report in an upcoming issue of The Astrophysical Journal. But a lot depends on the weather: If upwelling winds are powerful on free-floating brown dwarfs, as seems to be true in the bands of gas giants like Jupiter and Saturn, heavier creatures can carve out a niche. In the absence of sunlight, they could feed on chemical nutrients. Observations of cold brown dwarf atmospheres reveal most of the ingredients Earth life depends on: carbon, hydrogen, nitrogen, and oxygen, though perhaps not phosphorous.

Slashdot Top Deals