I know this website seems sketchy/scammy AF, but I found that these actually do a good job dimming the LEDs to reasonable levels, but keeping them visible.
https://www.lightdims.com/store.htm
I imagine (mostly because of all the “patent pending” bs) that this is a film you just just buy from somewhere else way cheaper, I just don’t know what it is.
Maybe we can find out for sure through the magic of the fediverse…
@[email protected] Is the “backdoor” mentioned in https://www.tarlogic.com/news/backdoor-esp32-chip-infect-ot-devices/ about what you shared in your RootedCON talk? If so, how worried should people using devices containing ESP32s be?
I don’t think is is a backdoor. At the moment I wouldn’t consider this article any more than FUD.
It’s unclear to me if the security company has actually said what the vuln is or not, but if it’s what was presented in the slides linked in the article this is at worst something that can be “attacked” from a computer connected via USB (and I’m pretty sure it would also require special software already on the ESP32), where the attack is sending out possibly invalid bluetooth messages to try to attack other devices or flashing new firmware to the ESP itself. It’s not a general “backdoor” in the ESP32 itself. At least that’s the best interpretation I’ve been able to make. Happy to be corrected if anyone finds more info.
I mean, if it were a backdoor, the one thing you can be sure of is that the people who put it there wouldn’t be calling it a backdoor, ever.
Though, I think it’s worth pointing out that the while the security company’s blog calls whatever it is a “backdoor”, “backdoor” (nor “puerta” (though, I have no idea if that would be translated literally or to something else)) doesn’t appear in the the slides. So I’m going to lay that one at the marketing people trying to drum it up into something more impressive than it really is.
Huh, that is interesting. Though, that post doesn’t seem to have any info about what the backdoor is either.
Tarlogic Security has detected a backdoor in the ESP32, a microcontroller that enables WiFi and Bluetooth connection and is present in millions of mass-market IoT devices. […] This discovery is part of the ongoing research carried out by the Innovation Department of Tarlogic on the Bluetooth standard. Thus, the company has also presented at RootedCON, the world’s largest Spanish-language cybersecurity conference, BluetoothUSB, a free tool that enables the development of tests for Bluetooth security audits regardless of the operating system of the devices. [Emphasis mine.]
Maybe the presentation has nothing to do with the actual backdoor?
Though, this part later might seem to imply they are related:
In the course of the investigation, a backdoor was discovered in the ESP32 chip, […] Tarlogic has detected that ESP32 chips […] have hidden commands not documented by the manufacturer. These commands would allow modifying the chips arbitrarily to unlock additional functionalities, […].
Which, best I can work out, seems to be talking about the information on slide titled “COMANDOS OCULTOS” (page 39 / “41”).
If the “backdoor” is the couple of commands in red on that slide, I maintain what I said above. If it’s not talking about that and there’s another “backdoor” that they haven’t described yet, well, then ¯\_(ツ)_/¯ we’ll see what it is when they actually announce it.
I fully acknowledge there may be something I’m missing. If there’s a real vuln/backdoor here, I’m sure we’ll hear more about it.
What is this article on about?
Here’s the actual presentation: https://www.documentcloud.org/documents/25554812-2025-rootedcon-bluetoothtools/
I don’t speak Spanish and only have the slides to go off of, but this doesn’t sound like a “backdoor”. This sounds like they found the commands for regulatory testing. To do emissions testing you need to be able to make the device transmit on command so that your testing house can verify you’re within legal limits on everything.
These are commands that can be given over USB. You know what else you can do over USB? Fucking anything, these chips have a JTAG USB device. (Now, if these are commands that can’t be turned off, that would be kinda bad, I guess? But still not really a super big problem. And I don’t see anything that implies that in the slides.)
[Edit: It’s not even that this is a “backdoor” in an internal peripheral interface. I think the “backdoor” is if you have software that exposes that interface somehow? Like you’re running an example that blindly copies stuff from an external UART to this interface? Like I think that’s it?]
The tone I get from the slides is more “hey we found this cool tool for doing Bluetooth stuff that doesn’t require writing embedded software”. Which, cool. But that’s sure not the point this article is trying to make.
It doesn’t sync to homeassistant, but I use a Xiaomi scale with openScale off of F-Droid. There’s a few different scales supported: https://github.com/oliexdev/openScale/wiki/Supported-scales-in-openScale
I asked nicely why do I need to give my phone number and I was told that to register me as a member so I can get the discount.
I declined and said I don’t want to join and would like to just pay.
I’ve just said “I don’t have one” when asked this for awhile. This never seems the phase the cashiers, I’m guessing they know what that really means. Half the time I still get whatever discount, though I’ve never tried to sign up for a membership saying that.
If it’s an online form my phone number is just (local area code)555–5555. I’ve never had that not take, except for one case where it automatically enabled 2-factor auth and I had to create a new account.
This is just a guess, but I’d imagine that happens because the websites use JavaScript to load the actual content of the page, but Lemmy is just parsing the HTML that is returned.
Also, I really doubt you’d have much luck convincing website authors to completely change their architecture just to get previews to work on Lemmy.
As someone who is currently hiring: Anything
Beyond that it depends on what you know and what kind of work you want to do.
They may block IP addresses associated with consumer ISPs. Assuming that’s the case, I would guess you’re seeing that as an HSTS/TLS error because their network is trying to trick your browser into redirecting to/displaying an error page hosted by some part of their network.
[edit: To be clear, I assume the part that OP is not sure if it’s satire or not is “or switching to a more privacy-conscious browser such as Google Chrome.”] The emphasis in
Firefox is worse than Chrome
is in the original. To me that clearly implies that they are of the opinion that in general Google & Chrome are worse on privacy than Mozilla & Firefox. The comment at the end is just tongue in cheek snark alluding to the fact that in this particular case google did better for privacy in Chrome than Mozilla in Firefox.
or switching to a more privacy-conscious browser such as Google Chrome.
Definitely satire, the context from earlier:
- Firefox is worse than Chrome in their implementation of ad snitching, because Chrome enables it only after user consent.
Unless you’re working with people who are too smart, then sometimes the code only explains the how. Why did the log processor have thousands of lines about Hilbert Curves? I never could figure it out even after talking with the person that wrote it.
C was originally created as a “high-level” language, being more abstract (aka high-level) than the other languages at the time. But now it’s basically considered very slightly more abstract than machine code when compared to the much higher level high-level languages we have today.
I’ve never been an SRE nor had to deal with super demanding giant corporate customers, but that seems exceptionally insane.
Serious suggestion: would the terms of your SLA allow you automate those emails to customers? Then you’d only have to actually deal with replies from customers. (Who I assume aren’t replying in the middle of the night.)
IMO, the best free option is https://freedns.afraid.org/. The biggest downside of that one is that you have to login a couple times a year (IIRC?) to keep it active. I actually still use this even though I have a paid domain, I just CNAME my real domains to the afraid dynamic name. That was easier than changing the config every time I become unhappy with my domain registrar and have to reconfigure everything after swapping.
You’re not mistaken, it is definitely possible with at least RSA, though, I would guess it may not always be possible. It also sounds like it’s still a bad idea unless you know all of the parameters used to generate the keys and can be sure what information is actually encoded in the keys.
It’s not even over USB by default. It’s an internal binary driver API. The USB part is a custom firmware for the ESP that exposes that api via USB that the people giving the talk wrote because it’s useful for pentesting / development of exploits for other Bluetooth devices.