Joe Rozner's Avatar

Joe Rozner

@jrozner.bsky.social

Startups, hacking, snowboarding. I build shit in Los Angeles. Writing about my journey to scalable vuln discovery @ https://goingbeyondgrep.com

304 Followers  |  208 Following  |  237 Posts  |  Joined: 16.05.2023  |  1.5185

Latest posts by jrozner.bsky.social on Bluesky

Timtam slams!

06.08.2025 03:49 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Sending someone to join with a recorder

28.07.2025 21:06 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

If only there were some alliance or consortium that was focused on that.

28.06.2025 00:12 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

What if we did something even more crazy. What if we made using this something that was included in the base license for products so you didn’t need to pay extra to use it?

27.06.2025 23:52 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I live a block away, literally line of sight, to an AT&T CO in Los Angeles. They won’t provide me fiber. The fiber is likely already run

20.06.2025 17:22 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Someone is going to have a bad day when they realize they lost this

17.06.2025 17:32 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

West coast best coast

15.06.2025 23:37 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I wonder how much it costs and whether the airspace over the White House is protected?

15.06.2025 20:53 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Generally happy with the how my hushcon presentation came out but it definitely should have been 45 minutes. It felt rushed and like I had to trim a lot. Hopeful to bring a revised version somewhere else and continue to talk about what we can do to improve authNZ and IAM

15.06.2025 19:33 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Is this a vuln from switch 1 software using the compat layer?

06.06.2025 19:07 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

How do we turn this decision into introducing tagged unions so we can get Result/Option and then revisit it?

03.06.2025 22:07 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

This has been the biggest take away I’ve had as well. When I buy I’m probably going electric

26.05.2025 22:12 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 2    πŸ“Œ 0

Ya, probably a few weeks. Dm me an address and I’ll get one in the mail this week

26.05.2025 19:05 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Have some extras if you want one

26.05.2025 18:18 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0
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This year’s contest was an rp2350 based β€œcrypto wallet” with secure boot, encrypted flash, protected OTP, disabled debugging, and the glitch detectors turned up. The design is meant to be a target to easily replicate Aeden’s attack against the chip with no desoldering

26.05.2025 17:33 β€” πŸ‘ 7    πŸ” 2    πŸ’¬ 1    πŸ“Œ 0

Such a terrible name and an even worse UI

20.05.2025 23:01 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

The one thing I do miss about Covid was just not getting sick. I feel like it’s still much less frequent than I used to but I basically went two years with nothing

29.04.2025 16:05 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

The Offspring is touring with Jimmy Eat World and New Found Glory. What year is it?

23.04.2025 06:14 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I was so unhappy with my desktop mill that I bought to upgrade from the pcb mill, which I loved. I wanted to give them another shot. This is a terrible user experience and completely unreasonable for what the hardware costs. It should just work out of the box.

21.04.2025 22:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

What's even worse about this is that the instructions don't call out the need for it, there's no indication that it's the problem. It just fails with a stack trace and I saw the bad CPU type in executable in the error message.

21.04.2025 22:15 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

I bought a $1300 pen plotter from Bantam Tools. I go to set it up and the software fails to run because I don't have rosetta2 installed on my mac. We're 5 years into Apple releasing Apple Silicon. How do you sell a high end commercial product and not support it yet?

21.04.2025 22:15 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 3    πŸ“Œ 0

Those matzah balls look great. Now I want to make some

16.04.2025 03:25 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

Is bundling a SIP soft phone enough to qualify for tariff exception?

13.04.2025 18:54 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
Preview
Silicon Valley crosswalk buttons apparently hacked to imitate Musk, Zuckerberg voices Crosswalk buttons along the mid-Peninsula appear to have been hacked, so that when pressed, voices professing to be Mark Zuckerberg or Elon Musk begin speaking.

www.paloaltoonline.com/technology/2...

13.04.2025 15:46 β€” πŸ‘ 1    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

This crosswalk hack needs to get nominated for a pwny

13.04.2025 15:33 β€” πŸ‘ 3    πŸ” 1    πŸ’¬ 2    πŸ“Œ 0

Is now the right time to invest in the company that made the nets Foxconn used for when manufacturing comes back to the US?

08.04.2025 18:26 β€” πŸ‘ 3    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Really excited to test out the YubiHSM 2 as a very low cost option for running our PKI on prem.

08.04.2025 15:58 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Found some old photos from @cellphonedude.bsky.social of me learning how to blow fire at shellcon

08.04.2025 01:56 β€” πŸ‘ 6    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0

Got an instant pot. First time using it immediately burned the shit out of my hands. Also, searing in a tall narrow pot is not the way. Will definitely be doing that in a pan and transferring going forward

07.04.2025 01:41 β€” πŸ‘ 0    πŸ” 0    πŸ’¬ 0    πŸ“Œ 0
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Enjoying the 1” of overnight powder. At least it’s slightly better than the ice sheet it was yesterday

30.03.2025 17:23 β€” πŸ‘ 2    πŸ” 0    πŸ’¬ 1    πŸ“Œ 0

@jrozner is following 20 prominent accounts