Jeff Murri (@InfoSec208) header
Jeff Murri (@InfoSec208) profile picture

Into infosec (all of it), amateur radio, microcontrollers and other hardware. If it makes a radio wave it's cool. Aspire to eradicate duhkha.

Dharmsala
Joined February 2009
Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)Photo by Jeff Murri (@InfoSec208)
Jeff Murri retweeted
I too have been basing my dismissal of abliterated models off the regular models lack of refusals. This post from @Jhaddix made me go back and actually test. I think he is on to something. In some IoT pentest benchmarks of mine, abliterated GLM 5.3 Flash is finishing the task 2-3x times faster on the same hardware. Running my full benchmark setup now. This could be big.
I (and @xssdoctor) were just talking about our experiences the other day, for bounty and pentest work. We have the opposite experience. Running Abliterated models drastically changes offsec CoT and hence outcomes for cyber testing. If you watch your chain of thought in a normal model, you’ll notice it taking a significant portion of your inference or tokens to argue about the tasks validity, safety, scope, and system prompt directives. PAGES of garbage reasoning polluting your attention mechanism for the transformer. It may get to “ok, I’ll do it” but you’ve wasted time, attention, and tokens, and have context pollution for future generations. Abliterated models don’t do this. That and they also have the latent space to ideate and find solutions to things a normal model won’t.
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Jeff Murri retweeted
I just published a 13,000 word blog post, Digital Audio Architecture in C64 OS. Goes into some technical detail. And walks through my journey of discovery, including some things about how the REU works. #C64 I hope someone finds it useful! c64os.com/post/digitalaudioa…
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It was excellent. Thank you @attrc
If you’re attending @BSidesAugusta looks @attrc ‘s talk is going to be excellent as well as the one by @dougburks pimpin his SO-CRATES tool. If you see him give him a Bill & Ted “Excellent!!!”
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Jeff Murri retweeted
Big PlutSDR tool release soon.
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If you’re attending @BSidesAugusta looks @attrc ‘s talk is going to be excellent as well as the one by @dougburks pimpin his SO-CRATES tool. If you see him give him a Bill & Ted “Excellent!!!”
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Everyone who owns hardware with abominable software (like Sonos players) owes a debt of gratitude to Venkatraman Srinivasan and the rest of the eMudhra gang in Bengaluru, Karnataka. Without their gross negligence, it'd be a lot harder to counterfeit certificates and fix the sw🙏
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If you aren’t at @securityonion con be sure to watch @packetengineer ‘s talk when the recording is posted. Lotsa great info for all levels of blue teamer - be you n00b or stud/studette.
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Two years ago I released the USB Army Knife, this combined WiFi, BTLE & USB attacks into a single dongle with a unified language. Two years of long nights later I’m teasing the UAK Pro More WiFi & BTLE attacks, mic, IR TX, mesh networking and more (see 🧵) Coming soon!!!
For over a year my free time has been spent turning this ‘LilyGo T-Dongle S3’ into hacking tool USB/WiFi/BT which I’ve named the USB Army Knife. This device is cheap, tiny, has a screen, SPI port, button and can do a ton of stuff with the ESP32-S3 inside. It has consumed me! 🧵
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Sure is a lot of cool RF stuff dropping in the last couple weeks!
Yes, a light bulb is now an SDR. etherbulb.com/
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And this is how 80 Msps, 80 MHz of real-time from a Wi-Fi USB adapter (CF-952AX) looks like when you spend time calibrate, tune the gain to protect against forced AGC and overload, and make it look like pretty and correct @cemaxecuter @luigifcruz @Ready4Sushi 2.4 GHz in all its glory! Just find a USB dongle that does not interferer so much on 2.4 GHz and this is the result.
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Jeff Murri retweeted
Check it out! My @tinytapeout project, brought to reality on real silicon! Looking forward to my first personal ASIC, built with free and open source toolchain. ❤️ Image credit: TT discord
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For the past three years, I have been writing long-form history articles for Digikey about stories that you have never heard before. I have done deep research on many topics you may never have considered. I tell the history of the electrical fuse, the relay, the op-amp, the transformer, radio broadcast, part designators, the soldering iron, the pipe wrench, the 555, the 6502, and the Galvanometer. Please check out my articles and let me know what you think. cybercitycircuits.com/2025/1…
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This person is putting out tons of RF goodness. Rad.
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Hell yeah!
Turned a WiFi 7 router into a 320Msps SDR. Custom firmware on its MediaTek MT7996 streams raw 14-bit IQ from 2.4/5/6GHz over 10GbE without dropping samples. It's not a snapshot mode, the waterfall is just one thing reading the stream. github.com/h0m3us3r/w1700k-s…
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In my younger don’t care years I’d be sliding a USB stick in this. #namethesystem The pic of the monitor kinda gives it away.
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Great journalism here. I didn’t think they were allowed to do this type of reporting anymore.
RFE/RL takes apart a Russian Geran-4 drone to uncover what makes the jet-powered unmanned aerial vehicle (UAV) faster, harder to intercept, and capable of operating deep inside Ukraine -- from its turbojet engine and advanced camera to foreign-made communications and navigation components. @cxemu @radiosvoboda
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Повну емуляцію апаратної платформи Nokia 6600 (NHL-10) у QEMU завершено. GSM-зв’язок працює end-to-end: Відправка та прийом СМС ARM → DSP → IQ → Osmocom → IQ → DSP → ARM
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