- wlug - list.wlug.org.nz

Google Is About To Have a Lot More Ads On Phones
by Peter Reutemann 14 May '19

14 May '19

'The Verge reports on the new ad types Google announced today that will start showing up throughout its mobile products, including some that interrupt the core Google search and discovery experiences. From the report: Google searches on mobile will soon include "gallery" ads that allow advertisers to display multiple images for users to swipe through. You'll also begin to see ads in Google's discover feed -- the feed of news stories that you find built into many Android home screens, inside the Google app, and on Google's mobile homepage -- though they'll only appear in select locations for now. The new ad formats are meant to make ads a lot more noticeable. In a blog post, Google ad chief Prabhakar Raghavan says that, in tests, gallery ads resulted in "up to 25 percent more interactions" than traditional search ads. Gallery ads will only be launching on mobile, not the desktop. Discover ads will appear in Google's mobile app, as well as on the discover feed on Android phones. Google tells us those ads won't appear in the discover feed that's built into the google.com mobile homepage. [...] The discover feed -- a personalized feed of recommended news stories that Google displays on mobile -- will also be getting ads for the first time. They'll appear just like any other story, with an image on top, a headline, and a subject field with more information. But they'll have a small badge that says "ad" to let users know it's sponsored. Those ads will extend to YouTube as well, where they'll slot in alongside recommended videos. Discover ads will also roll out later this year. ' -- source: https://search.slashdot.org/story/19/05/14/2014207 Time to switch your Google Apps to FOSS ones: https://f-droid.org/ 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/

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Microsoft Patches 'Wormable' Flaw in Windows XP, 7 and Windows 2003
by Peter Reutemann 14 May '19

14 May '19

'Microsoft today is taking the unusual step of releasing security updates for unsupported but still widely-used Windows operating systems like XP and Windows 2003, citing the discovery of a "wormable" flaw that the company says could be used to fuel a fast-moving malware threat like the WannaCry ransomware attacks of 2017. From a report: The vulnerability (CVE-2019-0708) resides in the "remote desktop services" component built into supported versions of Windows, including Windows 7, Windows Server 2008 R2, and Windows Server 2008. It also is present in computers powered by Windows XP and Windows 2003, operating systems for which Microsoft long ago stopped shipping security updates. Microsoft said the company has not yet observed any evidence of attacks against the dangerous security flaw, but that it is trying to head off a serious and imminent threat.' -- source: https://tech.slashdot.org/story/19/05/14/1943243 A bit like "what is dead may never die"... ;-) 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/

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'Hard-To-Fix' Cisco Flaw Puts Work Email At Risk
by Peter Reutemann 14 May '19

14 May '19

'Security researchers have discovered serious vulnerabilities affecting dozens of Cisco devices. The flaws allow hackers to deceive the part of the product hardware that checks whether software updates come from legitimate sources. Experts believe this could put emails sent within an organization at risk as they may use compromised routers. Messages sent externally constitute less of a risk, however, as they tend to be encrypted. The California-based firm said it is working on "software fixes" for all affected hardware. "We've shown that we can quietly and persistently disable the Trust Anchor," Red Balloon chief executive Ang Cui, told Wired magazine. "That means we can make arbitrary changes to a Cisco router, and the Trust Anchor will still report that the device is trustworthy. Which is scary and bad, because this is in every important Cisco product. Everything." Security experts believe that the vulnerability could cause a major headache for Cisco, which has listed dozens of its products as vulnerable on its website. "We don't know how many devices could have been affected and it's unlikely Cisco can tell either," said Prof Alan Woodward, a computer security expert based at Surrey University. "It could cost Cisco a lot of money."' -- source: https://it.slashdot.org/story/19/05/14/1945212 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/

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Huawei Says It is Willing To Sign 'No-Spy' Agreements With Governments
by Peter Reutemann 14 May '19

14 May '19

'Huawei is willing to sign no-spy agreements with governments, including Britain, the Chinese telecommunications company's chairman said on Tuesday as the United States pressures European countries to shun the firm over spying concerns. From a report: Washington has told allies not to use Huawei's technology to build new 5G telecommunications networks because of worries it could be a vehicle for Chinese spying, an accusation the firm has denied.' -- source: https://tech.slashdot.org/story/19/05/14/1531257 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/

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Intel CPUs Released in Last 8 Years Impacted by New Zombieload Side-Channel Attack
by Peter Reutemann 14 May '19

14 May '19

'Academics have discovered a new class of vulnerabilities in Intel processors that can allow attackers to retrieve data being processed inside a CPU. From a report: The leading attack in this new vulnerability class is a security flaw named Zombieload, which is another side-channel attack in the same category as Meltdown, Spectre, and Foreshadow. Just like the first three, Zombieload is exploited by taking advantage of the speculative execution process, which is an optimization technique that Intel added to its CPUs to improve data processing speeds and performance. For more than a year, academics have been poking holes in various components of the speculative execution process, revealing ways to leak data from various CPU buffer zones and data processing operations. Meltdown, Spectre, and Foreshadow have shown how various CPU components leak data during the speculative execution process. Today, an international team of academics -- including some of the people involved in the original Meltdown and Spectre research -- along with security researchers from Bitdefender have disclosed a new attack impacting the speculative execution process. This one is what researchers have named a Microarchitectural Data Sampling (MDS) attack, and targets a CPU's microarchitectural data structures, such as the load, store, and line fill buffers, which the CPU uses for fast reads/writes of data being processed inside the CPU. [...] In a research paper published today, academics say that all Intel CPUs released since 2011 are most likely vulnerable. Processors for desktops, laptops, and (cloud) servers are all impacted, researchers said on a special website they've set up with information about the Zombieload flaws.' -- source: https://tech.slashdot.org/story/19/05/14/1721242 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/

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Academics Improve SHA-1 Collision Attack, Make It Actually Dangerous
by Peter Reutemann 14 May '19

14 May '19

'"Attacks on the SHA-1 hashing algorithm just got a lot more dangerous last week with the discovery of the first-ever 'chosen-prefix collision attack,' a more practical version of the SHA-1 collision attack first carried out by Google two years ago," reports ZDNet. Google's original research allowed attackers to force duplicates for specific files, but this process was often at random. A new SHA-1 collision attack variation (a chosen-prefix attack) detailed last week allows attackers to choose what SHA-1-signed files or data streams they want to forge on demand, making SHA-1 an attack that is now practical in the real world, albeit at a price tag of $100,000 per collision.' -- source: https://it.slashdot.org/story/19/05/13/2255229 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/

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Is It Finally the Year of 'Linux on the Desktop' ?
by Peter Reutemann 13 May '19

13 May '19

'"2019 is truly, finally shaping up to be the year of Linux on the desktop," writes PC World's senior editor, adding "Laptops, too!" But most people won't know it. That's because the bones of the open-source operating system kernel will soon be baked into Windows 10 and Chrome OS, as Microsoft and Google revealed at their respective developer conferences this week... Between lurking in Windows 10 and Chrome OS, and the tiny portion of actual Linux distro installs, pretty much any PC you pick up will run a Linux kernel and Linux software. Macs won't, but it's based on a Unix-like BSD system that already runs many Linux apps with relative ease (hence Apple's popularity with developers). You have to wonder where that leaves proper Linux distributions like Ubuntu and Linux Mint, though. They already suffer from a minuscule user share, and developers may shift toward Windows and Chrome if the Linux kernels in those operating systems get the same job done. Could this fruit wind up poisonous over the long term? We'll have to see. That said, Linux is healthier than ever. The major distros are far more polished than they used to be, with far fewer hardware woes than installs of yesteryear. You can even get your game on relatively well thanks to Valve's Proton technology, which gets many (but not all) Steam games working on Linux systems. And hey, Linux is free. Normal users may never be aware of it, but 2019 may finally be the year of Linux on the desktop -- just not Linux operating systems on the desktop. ' -- source: https://linux.slashdot.org/story/19/05/13/0336224 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/

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meeting *next* Monday (May 20th)
by Peter Reutemann 13 May '19

13 May '19

Hi everyone Due to lining up with Techweek 2019, we shifted our monthly WLUG meeting to next week (May 20th). 'Lawrence D'Oliveiro will give an intro to Nagios (https://www.nagios.org/) an extensible system for monitoring all kinds of behaviour on a Linux box. He will also discuss writing your own plugins, to add monitoring of system characteristics that Nagios does not already provide as standard. The examples will be in Python, though they can be done in any language. This Meetup is part of the Techweek19 Waikato festival of innovation.' More details: https://www.meetup.com/WaikatoLinuxUsersGroup/events/257884277/ 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/

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Ubuntu 19.04: The Disco Dingo arrives and will really make your IT dept. happy
by Peter Reutemann 12 May '19

12 May '19

'Canonical recently released Ubuntu 19.04, the latest version of its flagship GNOME-based Linux desktop. But if you're a desktop user, you might be feeling a little left out. The big points of emphasis in this latest release are on Ubuntu as a tool for infrastructure development, server deployment, and the good old Internet of Things. For the server version of Ubuntu, the OS ships with all the latest cloud computing tools. In fact, that's already available in optimized builds on the major cloud services. Elsewhere, the latest version of the venerable Ubuntu desktop packs quite a few additional, tempting reasons to upgrade for Linux gamers. Ubuntu 19.04 makes the leap to the Linux kernel 5.x series, for instance, which offers much improved graphics support. Despite all the talk of developer tools and enterprise deployment stacks—Canonical has even taken to calling Ubuntu the "leading OS for cloud operations" lately—Ubuntu 19.04 is ultimately a worthwhile upgrade for all. After spending some time with it recently, we found some nice updates to the desktop, too. So no matter your Ubuntu use case, 19.04 seems to offer users a faster, more polished desktop than its predecessors.' -- source: https://arstechnica.com/gadgets/2019/05/ubuntu-19-04-review-the-disco-dingo… 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/

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ImageMagick "not authorized" PDF errors
by Peter Reutemann 12 May '19

12 May '19

Hi there I was trying to convert some images into PDFs using ImageMagick's "convert" tool and encountered a "not authorized" error, something similar to the following: convert-im6.q16: not authorized `scan.pdf' @ error/constitute.c/WriteImage/1037. Took me a while figuring that one out. As it turns out, this is due to ImageMagick's security policy being tightened up (no default rights for PDF/PS): /etc/ImageMagick-6/policy.xml You can, of course, re-enable support for PDF/PS. See the following post: https://cromwell-intl.com/open-source/pdf-not-authorized.html 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/

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