- wlug - list.wlug.org.nz

Computerphile YouTube Channel
by Lawrence D'Oliveiro 10 May '19

10 May '19

For those who are interested in short (10-minute or so) videos introducing various computing topics as discussed by lecturers at the University of Nottingham, have a look at the “Computerphile” channel <https://www.youtube.com/user/Computerphile> produced by Sean Riley. He also runs a sister channel which delves into mathematical topics, called “Numberphile” <https://www.youtube.com/user/numberphile>.

1 0

Open source bug poses threat to sites running multiple CMSes
by Peter Reutemann 09 May '19

09 May '19

'Websites running the Drupal, Joomla, or Typo3 content-management systems are vulnerable to attacks that could possibly execute malicious code until administrators install just-released patches, developers and security researchers warned. The vulnerability resides in the PharStreamWrapper, a PHP component developed and open-sourced by CMS maker Typo3. Indexed as CVE-2019-11831, the flaw stems from a path-traversal bug that allows hackers to swap a site's legitimate phar archive with a malicious one. A phar archive is used to distribute a complete PHP application or library in a single file, in much the way a Java archive file bundles many Java files into a single file.' -- source: https://arstechnica.com/information-technology/2019/05/open-source-bug-pose… Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

All Chromebooks Will Also Be Linux Laptops Going Forward
by Peter Reutemann 09 May '19

09 May '19

'At Google I/O in Mountain View, Google said "all devices [Chromebook] launched this year will be Linux-ready right out of the box." From a report: In case you've missed it, last year, Google started making it possible to run desktop Linux on Chrome OS. Since then, more Chromebook devices are able to run Linux. Going forward, all of them will be able to do so, too. Yes. All of them. ARM and Intel-based.' -- source: https://linux.slashdot.org/story/19/05/09/1724228 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

WordPress Finally Gets the Security Features a Third of the Internet Deserves
by Peter Reutemann 08 May '19

08 May '19

' The WordPress content management system (CMS) is set to receive an assortment of new security features today that will finally add the protection level that many of its users have desired for years. From a report: These features are expected to land with the official release of WordPress 5.2, expected for later today. Included are support for cryptographically-signed updates, support for a modern cryptography library, a Site Health section in the admin panel backend, and a feature that will act as a White-Screen-of-Death (WSOD) protection -- letting site admins access their backend in the case of catastrophic PHP errors. With WordPress being installed on around 33.8 percent of all internet sites, these features are set to put some fears at ease in regards to some attack vectors. Probably the biggest and the most important of today's new security features is WordPress' offline digital signatures system. Starting with WordPress 5.2, the WordPress team will digitally sign its update packages with the Ed25519 public-key signature system so that a local installation will be able to verify the update package's authenticity before applying it to a local site.' -- source: https://it.slashdot.org/story/19/05/07/1930208 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

Android Q Gets Dark Mode, Live Video Captioning, Better Gestures and More
by Peter Reutemann 07 May '19

07 May '19

'At its annual I/O developer event, Google announced a bunch of new features available in the latest Android Q beta. Engadget reports: The most obvious new feature is dark mode, which will be released system-wide in Android Q. It's accessible via a toggle switch in the quick settings area and it'll also be activated when you turn on battery saver mode. We just saw a quick screenshot of it, but it looks like it'll apply to any apps you're using regardless of whether they're Google-made or from other developers. Another notable new feature is called Live Caption. If you're watching a video, Google's machine-learning algorithms can now add captions on the fly by just pressing the volume button and then a "live caption" button that'll show up on on the onscreen volume slider. From there, you can expand and contract the panel as you see fit, and move it up and down on the screen so it doesn't obscure your video. Google is also able to do all of this on-device, so it's more secure and also doesn't need a network connection. [T]he company says that there are 50 new privacy and security settings in Android Q. Perhaps most notable are new location services settings that let you limit location tracking to only when the app is running. It'll also give you notifications to let users see when apps are using your location in the background. New settings also let you keep apps from accessing media on your phone and collecting information about your device like its IMEI and serial number. [...] Google's adding a new "focus mode" to help shut down various distractions. It'll block most app alerts and notifications while allowing important contacts like your family members to reach you. There are also more tools for parents to manage their kids' phone time -- it'll let you review how they're using their phone from your own device, set daily time limits, review app requests and more. There are also tweaks to the gesture-based navigation bar to make it more closely resemble the navigation gestures first introduced in the iPhone X. Google's also adding a new chat-focused interface called "bubbles" that lets users keep messaging conversations accessible regardless of what they're doing with the phone. We can expect the final desert-themed name and release date later in the summer. The Q beta 3 is currently available on 21 devices, including all Pixel devices.' -- source: https://developers.slashdot.org/story/19/05/07/2050236 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

Cray, AMD to build 1.5 exaflops supercomputer for US government
by Peter Reutemann 07 May '19

07 May '19

'AMD and Cray have announced that they're building "Frontier," a new supercomputer for the Department of Energy at Oak Ridge National Laboratory. The goal is to deliver a system that can perform 1.5 exaflops: 1.5×1018 floating point operations per second. By way of comparison, a single Nvidia RTX 2080 GPU manages about 14 teraflops of compute performance with 32-bit numbers. Frontier will achieve 100,000 times more. The fastest supercomputer in the Top 500 list weighs in at 200 petaflops, or 0.2 exaflops. As things stand, it'd take the top 160 machines on the list to match Frontier's performance. Frontier will use custom versions of AMD's Epyc processors (likely Zen 3 or Zen 4), matched with 4 GPUs, all connected using AMD's Infinity Fabric. Between nodes, Cray's Slingshot interconnect will be used, which has transfer rates of up to 200Gb/s per port. The GPUs will have their own stacked HBM (High Bandwidth Memory). It'll be housed in 100 cabinets, taking about 7,300 square feet of floor space. Power consumption will be 30-40MW. The plan is for Frontier to be delivered in 2021, at a cost of about $500 million for the hardware and $100 million for research and development. It should be the fastest supercomputer in the world when it's delivered, and it will be the US government's second exaflops-capable system; the first will be the 1 exaflops Aurora, built using Intel Xeon SP processors and Intel Xe GPUs.' -- source: https://arstechnica.com/gadgets/2019/05/cray-amd-to-build-1-5-exaflops-supe… Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

Linux 5.1 Released
by Peter Reutemann 07 May '19

07 May '19

'Linux 5.1 released has been released. The main feature in this release is io_uring, a high-performance interface for asynchronous I/O; there are also improvements in fanotify to provide a scalable way of watching changes on large file systems; it also adds a method to allow safe delivery of signals in presence of PID reuse; persistent memory can be used now as hot-plugabble RAM; Zstd compression levels have been made configurable in Btrfs; there is a new cpuidle governor that makes better power management decisions than the menu governor; all 32 bit architectures have added the necessary syscalls to deal with the y2038 problem; and live patching has added support for creating cumulative patches. There are many other features and new drivers in the changelog.' -- source: https://linux.slashdot.org/story/19/05/06/1436248 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

Windows 10 will soon ship with a full, open source, GPLed Linux kernel
by Peter Reutemann 06 May '19

06 May '19

'Earlier today, we wrote that Microsoft was going to add some big new features to the Windows Subsystem for Linux, including native support for Docker containers. It turns out that that ain't the half of it. The current Windows Subsystem for Linux uses a Microsoft-authored kernel component that provided the same kernel API as the Linux kernel but written from scratch by Microsoft. Essentially, it translated from Linux APIs to Windows NT kernel APIs. That worked pretty well, but the current subsystem had a few shortcomings: there was no ability to use Linux drivers, in particular file system drivers. Its file system performance, layered on top of Windows' own NTFS, was often 20 times slower than a real Linux kernel. It was also a relatively old version of the kernel; it offered approximately the set of APIs that Linux 4.4 did, and that was released in 2016. Some APIs aren't implemented at all, and others are only partially implemented to meet the needs of specific applications. All is changing with Windows Subsystem for Linux 2. Instead of emulating the Linux kernel APIs on the NT kernel, WSL 2 is going to run a full Linux kernel in a lightweight virtual machine. This kernel will be trimmed down and tailored to this particular use case, with stripped-down hardware support (since it will defer to the host Windows OS for that) and faster booting.' -- source: https://arstechnica.com/gadgets/2019/05/windows-10-will-soon-ship-with-a-fu… Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

Second Firefox Fix Repairs Broken Browser Extensions For More People
by Peter Reutemann 05 May '19

05 May '19

'An anonymous reader quotes CNET: "Mozilla on Sunday began distributing new Firefox updates to fix a problem that broke extensions for many browser users on Friday," reports CNET: Mozilla had released an update Saturday, but Sunday's fix should help more people who were still affected. "There are some issues we're still working on, but we wanted to get this release out and get your add-ons back up & running before Monday," Mozilla said in a tweet Sunday... "No active steps need to be taken to make add-ons work again. In particular, please do not delete and/or reinstall any add-ons as an attempt to fix the issue," Kev Needham, Mozilla's product manager for add-ons, said in a blog post about the problem.' -- source: https://news.slashdot.org/story/19/05/05/2315224 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

1 0

Does Open Source Have a 'Working For Free' Problem?
by Peter Reutemann 05 May '19

05 May '19

'"Let's abandon the notion that open source is exclusively charity," writes Havoc Pennington, a free software engineer (and former Red Hat engineer) who's now a co-founder of Tidelift: Look around. We do have a problem, and it's time we do something about it.... The lack of compensation isn't just bad for individual developers -- it also creates social problems, by amplifying existing privilege.... The narrative around open source is that it's completely OK -- even an expectation -- that we're all doing this for fun and exposure; and that giant companies should get huge publicity credit for throwing peanuts-to-them donations at a small subset of open source projects. There's nothing wrong with doing stuff for fun and exposure, or making donations, as an option. It becomes a problem when the free work is expected and the donations are seen as enough... What would open source be like if we had a professional class of independent maintainers, constantly improving the code we all rely on? The essay suggests some things consider, including asking people to pay for: * Support requests * Security audits/hardening and extremely good test coverage * Supporting old releases * License-metadata-annotation practices that are helpful for big companies trying to audit the code they use, but sort of a pain in the ass and nobody cares other than these big companies. "Right now many users expect, and demand, that all of this will be free. As an industry, perhaps we should push back harder on that expectation. It's OK to set some boundaries..." "Of course this relates to what we do at Tidelift -- the company came out of discussions about this problem, among others... In our day-to-day right now we're specifically striving to give subscribers a way to pay maintainers of their application dependencies for additional value, through the Tidelift Subscription. But we hope to see many more efforts and discussions in this area.... [I]n between a virtual tip jar and $100 million in funding, there's a vast solution space to explore."' -- source: https://news.slashdot.org/story/19/04/28/0459236 Cheers, Peter -- Peter Reutemann Dept. of Computer Science University of Waikato, NZ +64 (7) 858-5174 http://www.cms.waikato.ac.nz/~fracpete/ http://www.data-mining.co.nz/

2 1