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Microsoft Fixes Windows Defender Bug After Five Years of Firefox Slowdowns

Microsoft's Window Defender engineering team has finally found the time to address a long term bug within its anti-malware software - relating to performance issues with Mozilla's Firefox web browser. User feedback stretching back to five years ago indicates extremely sluggish web surfing experiences, caused by a Windows "Anti-malware Service Executable" occupying significant chunks of CPU utilization (more than 30%). The combination of Firefox and Windows Defender running in parallel would guarantee a butting of (software) heads - up until last week's bug fix. A Microsoft issued update has reduced the "MsMpEng.exe" Defender component's CPU usage by a maximum of 75%.

Microsoft and Mozilla developers have collaborated on addressing the disharmonious relationship between Defender and Firefox. A plucky member of the latter's softwareengineering team has been very transparent about the sluggish browser experience. Yannis Juglaret has provided a string of project updates via Mozilla's Bugzilla tracking system - one of his latest entries provide details about the fix: "You may read online that Defender was making too many calls to VirtualProtect, and that global CPU usage will now go down by 75% when browsing with Firefox. This is absolutely wrong! The impact of this fix is that on all computers that rely on Microsoft Defender's Real-time Protection feature (which is enabled by default in Windows), MsMpEng.exe will consume much less CPU than before when monitoring the dynamic behavior of any program through Event Tracing for Windows (ETW). Nothing less, nothing more."

Microsoft Unveils the Windows 11 2022 Update, Available Today

Today, the Windows 11 2022 Update rolls out in 190+ countries. The last few years have brought enduring changes in the ways we live, work and learn, with the PC playing a more critical role in our daily lives. Online options that didn't previously exist for meetings, appointments, everyday tasks and access to entertainment emerged out of necessity, but remain due to convenience and efficiency. We formed new habits; and they stuck. The PC has fundamentally connected us in more emotional ways than ever before.

The rapid move to more flexible work and life also dramatically increased security threats for individuals and businesses, with 921 password attacks every second. With last year's launch of Windows 11 we gave the PC a modern refresh, making it faster and easier for you to accomplish the tasks you have relied on your PCs for most. We added foundational security built into Windows at home and at work to help keep you safe and with Windows 365, we took Windows to the cloud, empowering organizations to stream the full Windows experience on any device. More people are using Windows and spending more time on their PCs. In fact, Windows 11 is the most used and most loved version of Windows ever.

Windows Defender can Significantly Impact Intel CPU Performance, We have the Fix

Kevin Glynn, aka "Uncle Webb," our associate software author behind popular utilities such as ThrottleStop and RealTemp, developed a new utility named Counter Control, which lets you monitor and log the performance counters of Intel Core processors since 2008 (Core "Nehalem"). During development for ThrottleStop, Kevin discovered a fascinating bug with Windows Defender, the built-in security software of Windows, which causes significantly higher performance impact on the processor than it should normally have. Of course a security software is bound to have some (small) performance impact during real-time protection, but this is much bigger.

The first sign that something is happening is that HWiNFO will be reporting a reduced "Effective Clock" speed when the CPU is fully loaded. A much bigger problem is that when Defender is affected by the bug, performance of your machine will be significantly reduced. For example, a Core i9-10850K running at 5.00 GHz all-core loses 1000 Cinebench points (or 6%). Such a performance loss has been reported by owners of Intel Core 8th, 9th, 10th and 11th Gen, both desktop and mobile CPUs, on both Windows 10 and Windows 11. AMD processors are not affected.

Microsoft Extends its ATP Defender Protection to UEFI BIOS With UEFI Scanner

Microsoft has announced an extension to the Windows Defender System Guard which will allow it to also verify and guarantee integryity of systems at a UEFI BIOS level. Citing an increase in hardware and firmware-level attacks over the years, the extended protection functionality aims to guarantee protection across the entire hierarchy of a device, from firmware up through to cloud processing.

The UEFI scanner is a new component of the built-in antivirus solution on Windows 10 and gives Microsoft Defender ATP the unique ability to scan inside of the firmware filesystem and perform security assessment. Working in conjunction with your systems' chipset, the UEFI scanner features a three-pronged solution to firmware security: UEFI anti-rootkit, which reaches the firmware through Serial Peripheral Interface (SPI); Full filesystem scanner, which analyzes content inside the firmware; and a Detection engine, which identifies exploits and malicious behaviors.

Microsoft's Chromium-based Edge Browser Now Available in Beta

Just in April, Microsoft was introducing the first flighting programs for their chromium-based Edge browser, with daily (Canary) and weekly (Developer) builds being made available to users. Fast forward four months, and the company is now making it available in beta form - the last step between general availability and an official, "finished" release.

Microsoft decided to stop developing their in-house browser engine, instead taking from and building upon the open-source Chromium project, from where Google chrome takes most of its components. The decision was meant to allow Microsoft to become a more powerful player in the development of Chromium and the internet browsing experience as a whole, facilitating developers' work. The Beta of Edge supports 14 languages and some quality of life features, such as the ability to decide whether their new tab page is laid-out in a Focused, Inspirational or Informational mode. Some other supported features include Microsoft Search (integrated with Bing), Internet Explorer mode and Windows Defender Application Guard. There's also a tracking prevention browsing mode, which prevents tracking from websites that you haven't really visited. This features includes three levels of privacy - Basic, Balanced and Strict. Will this be enough to make you jump towards the Edge?

A Case for Windows Defender: Triad of Perfect Scores in AV-Test

Here's a strange thing: a case for a free, bundled software solution being better (in the metrics concerned and evaluated) than paid, third-party counterparts. We're writing of none other than Microsoft's own Windows Defender suite, which is bundled with Windows and offers a security solution integrated into your OS. While the "paid is always better" philosophy has been proven wrong time and again and isn't that much of a powerhouse behind users' thought process anymore, the fact is that Windows Defender has somewhat been taken for granted as an "undesirability" in users' computers. However, a comparison made by AV-Test, which pits many of the available cybersecurity solutions available on the market, has found Microsoft's Windows Defender to be worthy of a triad of perfect scores.

The results for Windows Defender include perfect (6.0) scores in the "Protection", "Performance" and Usability" categories. The testing period refers to May through June of this year, and only F-Secure SAFE 17, Kaspersky Internet Security 19 and Norton Security 22.17 managed to get the same perfect scores as Windows Defender Version 4.18. Check out the link for the score of your cybersecurity solution of choice. But it's clear that least where this period is concerned, Windows Defender walked circles around some paid solutions.
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Nov 19th, 2024 06:31 EST change timezone

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