Sergi Martinez

143 Followers
110 Following
45 Posts
I like to define Undefined Behaviors and cooking
🌐​http://zlowram.cat
📍Barcelona

Today I have a more serious topic than usual, please consider reposting for reach:

My wife and I are urgently looking for a specialist in neuropediatrics or a similar field for our autistic child with a diagnosed, but not further specified, movement disorder (myoclonus and/or spasms) to finally find a cause and, above all, an effective therapy. The symptoms are bothering our son ever since he’s born, now for more than nine years, seriously affecting his sleep. The usual processes and medical contact points have failed us unfortunately and he seems stuck in this condition.

We’re based in Berlin, Germany but really any contact with a specialist who would be willing to take on this case we’d be grateful for!

To reach use you can DM me or contact us via Email at [email protected]

@pancake I'll just let them know that I might start considering options if the amount offered can cover the entire mortgage 😂
Computer engineer interested on #cybersecurity and #reverseengineering looking for job.
Maybe I do not have the skills, but one thing i can say is that I’m pretty good on getting my shit done, even if is something new to me.
#jobsearch

I wrote a short rant about what irks me when people anthropomorphize LLMs:

https://addxorrol.blogspot.com/2025/07/a-non-anthropomorphized-view-of-llms.html

A non-anthropomorphized view of LLMs

In many discussions where questions of "alignment" or "AI safety" crop up, I am baffled by seriously intelligent people imbuing almost magic...

Funny FPU trick I discovered yesterday to detect arm64 or x86_64 architecture at runtime

Imagine the following situation: your company receives a ZIP file with an invoice, and you're the person responsible for checking if all the details are correct, before sending it off to the payment department. You open the archive, and there's a single PDF inside. You view it, and all the details match—your company's details, seller's company's details, items and total amount are what's expected, and even the bank account number is the same as on previous invoices from this company. As everything looks good, you forward the ZIP with the invoice to the payment team, and move onto reviewing other incoming invoices.

A few days later you receive the same invoice again, but you already have it in the system. Just in case you reach out to the payment department whether it's been paid, and they confirm it has—great, no action required.

Another month passes by, and you get a "payment due" reminder. What's this? You remember it being paid already, so what gives. You ask the payment team, they again confirm the invoice was settled. You phone the seller about this, but they say they received nothing. So you head down the hall to the payment department, you open the invoice on your laptop, and start going through the details with them. But what's this? The destination account number and amount in the wire transfer and the invoice don't match! The payment team manager's face gets a bit red—seems like it was their mistake? But no! They show you the invoice, and the amount and account number match the actual payment... but it doesn't match what you see on your screen! How can this be?

Both of you re-download the ZIP archive from the email you've forwarded and open the PDF inside. And there it is—you see two different invoices. What in the world is happening?

Immediately you report it up the chain, and your boss's boss gets a pair of IT forensics consultants on the job. They investigate, and later you learn that your company has been scammed with a pair of different invoices hidden inside a schizophrenic ZIP file. This means that you—on your work laptop running a certain software stack—saw and approved the correct invoice. But the payment team—running a different software stack—saw the fake invoice inside the ZIP, which they thought was what you had approved. Even later on you find out that the seller's company has been partially compromised and a lot of their customers got fake invoices. But that's water under the bridge at that point, and the money your company transferred is long gone.

Technical details → https://hackarcana.com/article/yet-another-zip-trick

📣Tomorrow (wed18) I will be presenting the last news in the #radare2 ecosystem and showcase some real world #reverseengineering usecases with #r2ai @NowSecure
#Connect25https://infosec.exchange/@NowSecure/114597238407822896
I think you're getting old when the excitement of having a certain piece of tech (phone, tablet, laptop, etc.) working for as long as possible is 100x greater than thinking of getting something new. This did not used to be like this 15 years ago 😂.
🚨 *Attention!* We were made aware of a fake “KeePassXC Password Manager Pro” repository on GitHub that links to unverified external binary downloads.
- There is NO Pro version of KeePassXC!
- You get all the “Pro” features with the regular version.
Please download KeePassXC only from trusted distribution channels linked on https://keepassxc.org/ !
KeePassXC Password Manager

KeePassXC Password Manager

Quick note: https://arm.jonpalmisc.com/ has been updated to the latest version of the Arm spec. Any changes should be strictly improvements, but let me know if something seems off.
Jon's Arm Reference

This site offers reference documentation for the AArch64 instruction set and system registers defined by the Armv8-A and Armv9-A architectures.