henfredemars

joined 2 years ago
[–] henfredemars@infosec.pub 15 points 1 hour ago

The damage is already done. You have proven to those workers that you’re not an worthy employer.

Even those that do come back will be looking for a new job while collecting paychecks.

[–] henfredemars@infosec.pub 7 points 1 hour ago (1 children)

With enough current those leads will re-solder themselves.

[–] henfredemars@infosec.pub 1 points 7 hours ago

This is a great question. I do not know the answer, but I would be very interested in seeing such a study.

[–] henfredemars@infosec.pub 1 points 7 hours ago

Pixel 6 is one such a device that does this. I replied with a link to a different comment, but not reproducing here to avoid the perception of spamming links.

[–] henfredemars@infosec.pub 2 points 7 hours ago

I’d recommend you consider if you actually need to re-lock the boot loader. It’s a great way to turn a device into a brick. There are a few apps that don’t work with an unlocked boot loader but most will be fine. My bank for example is really annoying and complains. There is a risk that if you try to lock the boot loader after a downgrade your device may simply not start anymore and you’ll lose access to be able to flash or unlock the boot loader again.

It’s not supposed to get stuck like that, but I’m telling you from personal experience that not all vendors are great about handling this situation. Most people never attempt to install third-party firmware, and you’re not really supposed to be able to downgrade.

Good luck!

[–] henfredemars@infosec.pub 3 points 9 hours ago* (last edited 9 hours ago) (9 children)

Generally speaking this is not reversible. Many phones specifically blow fuses in the device to make sure that attempts to downgrade will fail for security reasons. They don’t want someone stealing the phone and somehow tricking it into downgrading in order to extract its content using a security vulnerability that existed in an earlier version.

With that said, if you can get your hands on the ROM Or at least one of the version you require, you could unlock the device and flash whatever you want. You may not be able to re-lock the boot loader however for the aforementioned reason. If you can that would be a device-specific thing.

It looks like older stock firmwares are available online by unofficial sources. You can decide if you trust those enough to attempt to downgrade.

Reference: https://xdaforums.com/t/guide-bootloader-unlock-for-moto-g-stylus-5g-2023.4620535/

[–] henfredemars@infosec.pub 7 points 9 hours ago (4 children)

There are no viable solutions under our current economic model unless the problem is solved incidentally to that model, such as renewables becoming outrageously cheaper than any alternative. Otherwise, it’s very difficult to motivate decisions beyond the current quarter let alone the next year or two, let alone decades!

[–] henfredemars@infosec.pub 2 points 17 hours ago

Mine is definitely just a preset time estimated for what a bag of popcorn should require. It sets a timed countdown that looks and works exactly the same as if I had simply entered that time.

[–] henfredemars@infosec.pub 2 points 18 hours ago (1 children)

It looks like it’s only a matter of time before there will be 0 browsers capable of blocking ads[.]

I don't know if I'd take it that far. Firefox and the Chrome engine are open source projects. Anyone can modify the browser to enable ad-blocking in some form if a user is sufficiently determined. Now, will it be possible to write and distribute a popular an effective adblocker under these conditions? It appears to be getting harder.

[–] henfredemars@infosec.pub 6 points 18 hours ago

They are super dispensable.

[–] henfredemars@infosec.pub 6 points 18 hours ago (1 children)

I hate this stupid question. Why do I want to work here? I was told I would be paid! Do you work here for something other than money?

 

Qualcomm’s Snapdragon 8 Elite promises big things for late 2024 and 2025 flagship smartphones. From a new custom CPU to unrivaled graphics performance, photography, and enhanced AI capabilities, it’s the chip that claims to do it all, and, for the most part, it does. However, our initial impressions of the chip have been tainted by exceedingly high temperatures when placed under stress.

 

According to our source, those purchasing the Google Pixel 9a will get Fitbit Premium for 6 months, YouTube Premium for 3 months and Google One 100GB for 3 months. This is similar to the freebies that Google offered for the rest of the Pixel 9 series.

I feel like this isn't all that interesting news though because I thought trials were commonly included with new Android phones.

 

This is merely a small blurb. Here's the (nearly) complete text of the article (no real need to visit the page):

Qualcomm says Arm is no longer threatening to take its chip architecture away.

”Arm recently notified us that it was withdrawing its October 22nd, 2024 notice of breach and indicated that it has no current plan to terminate the Qualcomm Architecture License Agreement,” Qualcomm CEO Cristiano Amon said on today’s Q1 2025 earnings call. (Qualcomm reported record quarterly revenue, and Amon says Snapdragon now has 10 percent share of $800-plus Windows laptops at US retail.)

Sounds like the chip licensing drama is coming to an end, although it's hard to know what agreements went on behind the scenes to call off the giants' battle.

 
  • Android will soon be able to alert you when your device’s time zone has been automatically updated.
  • This alert will come in the form of a notification.
  • The feature isn’t live yet in the latest Android 16 preview, but when it does go live, it’ll be opt-in.

Sounds like a nice QOL mini-feature.

 

Hello Linux Gurus,

I am seeking divine inspiration.

I don’t understand the apparent lack of hypervisor-based kernel protections in desktop Linux. It seems there is a significant opportunity for improvement beyond the basics of KASLR, stack canaries, and shadow stacks. However, I don’t see much work in this area on Linux desktop, and people who are much smarter than me develop for the kernel every day yet have not seen fit to produce some specific advanced protections at this time that I get into below. Where is the gap in my understanding? Is this task so difficult or costly that the open source community cannot afford it?

Windows PCs, recent Macs, iPhones, and a few Android vendors such as Samsung run their kernels atop a hypervisor. This design permits introspection and enforcement of security invariants from outside or underneath the kernel. Common mitigations include protection of critical data structures such as page table entries, function pointers, or SELinux decisions to raise the bar on injecting kernel code. Hypervisor-enforced kernel integrity appears to be a popular and at least somewhat effective mitigation although it doesn't appear to be common on desktop Linux despite its popularity with other OSs.

Meanwhile, in the desktop Linux world, users are lucky if a distribution even implements secure boot and offers signed kernels. Popular software packages often require short-circuiting this mechanism so the user can build and install kernel modules, such as NVidia and VirtualBox drivers. SELinux is uncommon, ergo root access is more or less equivalent to the kernel privileges including introduction of arbitrary code into the kernel on most installations. TPM-based disk encryption is only officially supported experimentally by Ubuntu and is usually linked to secure boot, while users are largely on their own elsewhere. Taken together, this feels like a missed opportunity to implement additional defense-in-depth.

It’s easy to put code in the kernel. I can do it in a couple of minutes for a "hello world" module. It’s really cool that I can do this, but is it a good idea? Shouldn’t somebody try and stop me?

Please insert your unsigned modules into my brain-kernel. What have I failed to understand, or why is this the design of the kernel today? Is it an intentional omission? Is it somehow contrary to the desktop Linux ethos?

 

This year has been a milestone for us, with significant strides in decentralizing app distribution, expanding the F-Droid ecosystem, and solidifying our infrastructure. All of these advancements were made possible thanks to donations, grants, our volunteers and regular contributors. So thank you again to everyone who helped make 2024 another great year for F-Droid. Now let’s take a closer look at what we accomplished.

 

Pixelfed is now available as a mobile apps for both iOS and Android. The open source, decentralized platform offers image sharing similar to Instagram. However, Pixelfed has no advertisements and does not share user data with third parties.

 

The AirTag is the gold standard, but Google had eight months to fix its bad network. It's still not fixed.

 

If I had a strong source of radio-frequency photons, can these be converted to electricity like a solar panel does for light?

 

Bullet points taken from article:

  • The latest Google Messages beta supports MLS encryption, RCS’s next step toward E2EE interoperability across apps and platforms.
  • We managed to enable MLS for one-on-one RCS conversations in Google Messages, but we haven’t been able to enable it for RCS group chats yet.
  • This indicates that MLS encryption support could be on the horizon for Google Messages.

Note that Google Messages already does end to end encryption, but there are many cases where this feature doesn't work (such as when communicating with an iPhone).

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