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Proprietary Web and Vista 11 Performance Catastrophe

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  • Client-side content scanning as an unworkable, insecure disaster for democracy • The Register

    Fourteen of the world's leading computer security and cryptography experts have released a paper arguing against the use of client-side scanning because it creates security and privacy risks.

    Client-side scanning (CSS, not to be confused with Cascading Style Sheets) involves analyzing data on a mobile device or personal computer prior to the application of encryption for secure network transit or remote storage. CSS in theory provides a way to look for unlawful content while also allowing data to be protected off-device.

    Apple in August proposed a CSS system by which it would analyze photos destined for iCloud backup on customers' devices to look for child sexual abuse material (CSAM), only to backtrack in the face of objections from the security community and many advocacy organizations.

    The paper [PDF], "Bugs in our Pockets: The Risks of Client-Side Scanning," elaborates on the concerns raised immediately following Apple's CSAM scanning announcement with an extensive analysis of the technology.

  • Vivaldi Adblock is mostly Adblock Plus and ublock-origin.

    The Vivaldi browser has a built-in ad blocker.

    However, the company hasn’t been extremely forthcoming about how it works.

    However, it seems to accept any list in adblock plus format, and Vivaldi seems to have implemented Webkit Content Blockers as well.

    Vivaldi includes a list called “DuckDuckGo Tracker Radar”, which leads to what seems to be a Webkit Content Blocker format list mirrored by Vivaldi.

    In my testing, the DuckDuckGo Tracker Radar seems to largely duplicate what Fanboy’s Ultimate List already had in it.

    While Fanboy’s Ultimate List is not in Vivaldi by default, you can add it by going to Vivaldi Menu/Settings/Privacy, and then select “Block Trackers and Ads”, and then I would suggest de-selecting everything in both columns that Vivaldi defaults to having on, then clicking + under Ad Blocking Sources, then adding https://www.fanboy.co.nz/r/fanboy-ultimate.txt and then Import. It should tell you it brought in a bunch of ad blocking rules.

  • This week's Windows 11 patch didn't fix AMD performance woes • The Register

    Windows 11 received its first bundle of fixes this week, but AMD users hoping for respite from performance issues that have dogged their PCs were to be disappointed. In fact, for some, performance might have actually got a bit worse.

    It wasn't the news AMD fangirls and fanboys were hoping for. After AMD noted performance issues with Microsoft's latest operating system, a fix had been expected to drop during October. Alas, that fix didn't turn up in this week's first Cumulative Update for the GA code. In fact, according to hardware site TechPowerUp, things might have even deteriorated.

  • Microsoft’s first Windows “11” update addresses AMD CPU scheduling problems. Ends up making them worse. – BaronHK's Rants

    Microsoft released their first “Windows 11” update.

    It was deployed to try to correct the AMD CPU problems that Windows “11” created on Ryzen, which tripled L3 CPU cache latency and slowed the processor down by an average of 15%.

    The update ended up making the problem worse. Doubling the cache latency from where it already was at launch.

    “Early adopters” of Microsoft’s latest broken operating system are seeing much worse performance than they were on Windows 10, even on the Intel side, as Microsoft’s “virtualization based security” was already wreaking havoc on video game performance.

  • The "What If" Performance Cost To Kernel Page Table Isolation On AMD CPUs - Phoronix

    Made public this week by CPU security researchers at Graz University of Technology and CISPA Helmholtz Center for Information Security was the research paper published "AMD Prefetch Attacks through Power and Time". The paper points to AMD CPUs suffering from a side-channel leakage vulnerability through timing and power variations of the PREFETCH instruction. The paper argues that AMD CPUs should activate stronger page table isolation by default. AMD has now published their security response where they are not recommending any mitigation changes at this time. But what if Kernel Page Table Isolation (KPTI/PTI) proves necessary for AMD CPUs? Here are some initial benchmarks showing what that performance impact could look like.

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