Live data from Hacker News

Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

bugzilla.mozilla.org

391–400 of 443 posts

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#391

Earlier quoted context omitted.

Apple can and does leave things out of that repo.

So you think there is a conspiracy by Apple to not allow third parties to be battery efficient and make there hardware look bad? But you are free to download the source code, compile and run it yourself to see if it is less battery efficient than the official builds.

I did not say that.

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#392
post #387

Earlier quoted context omitted.

For those people unfamiliar with a pretzel, imagine eating something that is making you thirsty.

For those people unfamiliar with this joke, watch the TV show Seinfeld.

For those people unfamiliar with 'TV shows', they are similar to HBO series, but with less interepisodic narrative.

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#393

Earlier quoted context omitted.

A bunch of cars across many manufacturers were recalled in the 2010's due to a defect in the airbags made by the same manufacturer. One could also argue that the OS is the car, the browser is the chauffeur, and the user is the passenger.

With regard to browsers, I think we need more manufacturers, not just the GM (Google/Chrome) of browsers. I want Ford in there as well. (Sticking with US automotive companies).

What's wrong with Chrysler?

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#394
post #44

Earlier quoted context omitted.

Haha, you should enable it with exclusions. It's the best AV out there that isn't an EDR. I disable it in labs but I can't imagine running windows in prod with defender enabled. Don't use windows like it's Linux.

Defender, under certain licenses, is an EDR - https://learn.microsoft.com/en-us/microsoft-365/security/def...

Well they call a LOT of things Defender now anything from email and azure specific alerting to EDR and DLP. It's all "Windows Defender ______". But I meant the consumer license AV.

But also even with the most basic win10, cloud submission (if privacy is no biggie) gets you EDR detections to a point but without the edr console and logs.

When I simulate attacks with defender on, I would spend a lot of time bypassing it but then as soon as I break opsec (e.g.: run whoami.exe) if cloud submission is on I basically burn that technique because the edr in their cloud blacklisted it but with that off I can last as long as I want so long as I don't execute things flagged as malware by the defender on the host (and even then, usually that thing gets blocked not my original technique which I can still reuse).

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#396

Earlier quoted context omitted.

Five years is nothing for MS. You should see how long the bug in File Explorer has been there, where after navigating to a folder and pressing the down arrow, the second item is selected instead of the first. And it's one of those things that, even though I'm aware of it, it still always catches me causing extra keystrokes. It's like they're trying to force me to use the mouse for some reason.

That one I can almost agree with the reasoning for. The first item is selected by default but also by default you have to intentionally trigger a keyboard navigation for it to go into that mode since most don't intend to do that when hitting enter on a freshly loaded directory. As evidence of this behavior instead of hitting a directional key to change the selection whacking space should activate the highlight on the…

Wanted to chime in with this. Agreed, it's not a bug. Just a UX decision that was made to prevent people from hitting Enter over and over and constantly launching/navigating stuff.

I often accidentally rename files in macOS Finder (hitting Enter activates rename).

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#397

Earlier quoted context omitted.

You are not sellout but just the average Joe. No problem with that I guess. Have fun with your Mac that uses a soldered ssd that when failing makes your whole Mac useless as well.

Meh hasn’t happened yet but I’d just buy a new one. That being said, I always also have a windows and Linux machine, they’re just not my daily drivers.

You just didn’t get my point: in 2023 it’s about the environment at least for me. That’s why I wrote my comment. Just buying a new one is somehow dated imho. But ymmv

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#398
yet another reason why I don’t touch Windows for any professional/sensitive workflows.

Only keep a license around for the occasional gaming session. Disable all of the Windows features (ie, firewall, auto updates, antivirus) and telemetry. Strip the OS to bare minimum and manage the GPU, mobile drivers manually. Limit it to only games

Re: Microsoft fixes 5-year-old Defender bug, reducing Firefox-related CPU use by 75%

#399
post #143

If you're on a Mac and using FF (probably not FF specific), turning off "ambient mode" in youtube can save 30% cpu. I just found this out while searching why FF was taking 90% of my cpu while watching youtube videos in normal mode, but went down to 40% use if viewing in full screen. Turns out that this youtube "ambient mode" was the culprit. My lap is now cooler and the fan doesn't turn on anymore. I wonder how much…

Or stop using the crap YT frontent entirely - https://yewtu.be Run your own alternate frontend - https://github.com/iv-org/invidious

Wow! didn't know that. Very helpful
Post reply on HN