If you want to dive into #Zephyr, come check out my live, virtual webinar on April 24. I’ll demonstrate how to write a device driver from scratch! Sign up here
https://event.on24.com/wcc/r/4870160/B0654D058D6BC12D5A08B9607370682A?partnerref=sh1
#esp32 #arduino #microcontroller #iot #embedded #programming #rtos @zephyr
Dear #Lazyweb : if you had a small device (25x30mm) that was designed to run off 5v or 3v3, and you learned far too late that one user wants to run it off 12v, what would you do? ( I’ve shoehorned in an AMS1112 in similar circumstances before and that works but is not kind to the environment) Smallest 12->5 reg reasonably efficient and good for 300mA? #IoT #AskFedi #DontSay7805 #OhGodIts7805IsntIt
Does anyone know QEMU well? I'm trying to figure out how to control the virtual TMP105 built into the #ESP32 fork of QEMU. If I build/run with "idf.py qemu" it magically works (reads from the virtual I2C TMP105 at addr 0x48). How do I change the temp in qemu? #iot #microcontroller
Jedes Produkt ist nur so sicher wie seine Einzelteile: Am Wochenende wurde eine #Backdoor in einem #IoT-#Mikrocontroller entdeckt, der in geschätzt mehr als einer Milliarde IoT Devices verbaut ist. Und weil der Chip nur 2 EUR im Einkauf kostet, wird er auch in so vielen Endgeräten verbaut. Mit der Backdoor ist es u.a. möglich, sensible Daten abzugreifen, Geräte fernzusteuern oder #Schadsoftware zu verbreiten - Security by Design schaut anders aus:
#Cybersecurity #Schwachstelle #IoT Devices: Eine ziemlich abenteuerliche Geschichte von einem Akira #Ransomware Angriff zeigt, dass Endpoint Detection and Response (#EDR) nicht immer hilft, wenn es an anderer Stelle im Unternehmensnetz weitgehend ungeschützte Einfallstore gibt - bis hin zu einer auf den ersten Blick vielleicht harmlos erscheinenden Webcam - darum macht Netzwerksegmentierung Sinn:
Yikes, from an article that contains a lot more detail, but just to get your attention as to the impact part:
«The ubiquitous ESP32 microchip made by Chinese manufacturer Espressif and used by over 1 billion units as of 2023 contains undocumented commands that could be leveraged for attacks.
The undocumented commands allow spoofing of trusted devices, unauthorized data access, pivoting to other devices on the network, and potentially establishing long-term persistence.
…
"Exploitation of this backdoor would allow hostile actors to conduct impersonation attacks and permanently infect sensitive devices such as mobile phones, computers, smart locks or medical equipment by bypassing code audit controls."
The researchers warned that ESP32 is one of the world's most widely used chips for Wi-Fi + Bluetooth connectivity in IoT (Internet of Things) devices, so the risk is significant.»
People worried about this topic might also "enjoy" the recent Netflix series Zero Day.
And not to get too far afield, but hopefully it also didn't escape notice that there have been broad firings of qualified people in the US government for reasons related not to their technical skill or ability to protect our nation from issues like this, but because of irrelevant details of their private lives or personal leanings on issues of having fair and competent government, helping the needy, defending individual human freedom and dignity, or avoiding mass death in myriad ever-more-likely ways.
I was not the only one who found the headlines of an #ESP32 #backdoor a wee bit overblown, and #TarLogic presentation reeking a wee bit of self promotion -
after reading all of it, i found myself slightly unimpressed and none too worried about #IoT #security ..
BleepingComputer has changed their headline
Just preparing my next #ESP32 exercise as part of my #IoT course ... this comes in timely ...
study material for the #security unit ...
#bluetooth #backdoor in #espressif #ESP32 chips ...
https://thedefendopsdiaries.com/unveiling-the-esp32-backdoor-implications-for-iot-security/
This is why we can't have nice things.
Sincerely disappointing.
Haven’t done a fun #maker project in a while 
I wanted to spice up my background in videos, so I built this 
We’ll see how it looks when I film next! #electronics #esp32 #Arduino #IoT #microcontroller
@ai6yr Sounds like the attacker would have to be close to your weather station to get Bluetooth connectivity before issuing low level commands.
Most fun, though not profit, could come from having the infected device spread the infection to its neighbours until no IoT devices remain on the planet.
#iot
at this point what's the purpose of Smart TVs? they've been completely enshittified, and you can easily have it replaced with a huge monitor
86.000 #IoT Devices - eines der größten #Botnetze der letzten Jahre wurde durch Researcher von #Nokia ausfindig gemacht: Vor allem sind Netzwerkkameras und Netzwerk-Videorekorder betroffen - meistens Devices, die einmal in das Netzwerk gehängt und nie wieder aktualisiert werden - geschweige denn überhaupt jemals richtig vorkonfiguriert wurden:
"GreyNoise has published a list of IP addresses linked to Eleven11bot and confirmed to carry malicious actions" #cybersecurity
https://www.bleepingcomputer.com/news/security/new-eleven11bot-botnet-infects-86-000-devices-for-ddos-attacks/
Here is the one everyone has been asking for: Introduction to #Zephyr 
The first episode is out! My plan is to get #embedded devs up to speed on this fast-growing #RTOS. Check it out!
https://youtu.be/mTJ_vKlMS_4
#microcontroller #IoT #electronics #programming #ESP32 @zephyr
I'm ready to pay extra to get a dumb device. I believe I'm not alone in this stance.
The Internet of Shit is on the attack again, with a suspected Mirai-derivative botnet composed largely of compromised security cameras delivering a massive volumetric DDoS. Sweet.
#BotNets #security #IOT https://mastodon.social/@arstechnica/114115698112535544
Exciting Milestone!
Following our recently announced government contract in South America, we’re thrilled to kick off the project with our first official order this month!
This marks a significant step forward, reinforcing confidence in our innovative technology and global expansion.
Stay tuned for more updates as we continue to grow! #t42 #SmartTracking #Innovation #GlobalExpansion #IoT
I need to find a plug that I can remotely operate via the internet. It should work via wifi. It would be nice if it were actually secure and not some massive security hole in the network. It would be used to power cycle a Raspberry Pi periodically when the Raspberry Pi crashes and I can't get to it in person for weeks at a time.
Dites les toulousains, j'ai un #quartz64 à la maison et je n'arrive pas à installer d'OS dessus, le port console n'a pas l'air de fonctionner, mais je suis un vrai #noob là-dedans. Je cherche une install party ou quelqu'un qui aurait de l'expérience et qui pourrait m'aider à boostraper la chose.
le repouet aide calme l'esprit.
#iot #aarch64 #toulouse #geekery
We are the Ariel OS project: developing an operating system for embedded systems in Rust, for a safer #IoT.
We just published our first 0.1 release, with which we already enable building portable multi-core applications on Cortex-M, RISC-V and ESP32 devices, using different link-layer and application layer networking protocols, including out-of-the-box secure communication.
https://ariel-os.org/ has all the links to examples, manual and API docs.
