Juan L. Delgado-Davila
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jdelgadodavila.bsky.social
Juan L. Delgado-Davila
@jdelgadodavila.bsky.social
Cyber | AI | Quantum | Maths | Systems Science | Security | Defense | Intelligence | National/Homeland Security | Researcher | Lecturer | Advisor | Computer Engineer
Reposted by Juan L. Delgado-Davila
Check out our toolkit for guidance on common OSINT tools: bellingcat.gitbook.io/toolkit
And our guides on many different open source techniques: www.bellingcat.com/category/res...
About | Bellingcat's Online Investigation Toolkit
A toolkit for open source researchers
bellingcat.gitbook.io
April 24, 2025 at 10:04 AM
Reposted by Juan L. Delgado-Davila
The nitrogen in our DNA, the calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.

- Carl Sagan, Cosmos
May 11, 2025 at 6:24 PM
Reposted by Juan L. Delgado-Davila
So far, classical computers perform most tasks better than quantum computers can. In a new episode of “The Joy of Why,” computer scientist Ewan Tang speaks with co-host Janna Levin about the effort to understand the limitations of quantum machines. www.quantamagazine.org/what-is-the-...
What Is the True Promise of Quantum Computing? | Quanta Magazine
Despite the hype, it’s been surprisingly challenging to find quantum algorithms that outperform classical ones. In this episode, Ewin Tang discusses her pioneering work in “dequantizing” quantum algor...
www.quantamagazine.org
April 3, 2025 at 2:52 PM
New results break with decades of conventional wisdom for the gradient descent algorithm.
The optimization technique of gradient descent is like feeling your way down a mountain in the dark. You may not be able to see the way, but you’ll eventually reach the lowest point in the area. (From the archive)
www.quantamagazine.org/risky-giant-...
March 29, 2025 at 9:39 PM
Reposted by Juan L. Delgado-Davila
“Signal is a tool. If you misuse a tool, bad things are going to happen. If you hit yourself in the face with a hammer, it’s not the hammer’s fault. It’s really on you to make sure you know who you’re talking to.”
SignalGate Isn't About Signal
The Trump cabinet’s shocking leak of its plans to bomb Yemen raises myriad confidentiality and legal issues. The security of the encrypted messaging app Signal is not one of them.
www.wired.com
March 26, 2025 at 7:23 PM
Reposted by Juan L. Delgado-Davila
Signal is a great privacy tool, but it isn’t magic. And even if you’re not discussing war plans in your group chat, it’s a good idea to know the limits of encryption.

Read our piece on what Signal can—and can’t—do for you here: www.wired.com/story/encryp...
Encrypted Messaging Is Essential—But It Isn’t Magic
As recent events have shown, using an encrypted messaging app like WhatsApp or Signal is no privacy panacea.
www.wired.com
March 25, 2025 at 7:25 PM
Reposted by Juan L. Delgado-Davila
Using a variety of analogy puzzles, SFI researchers have shown that the reasoning abilities of OpenAI’s GPT-4 model fall short when faced with small changes. Recognizing the limitations of these tools is critical to knowing when and to what extent they can be trusted.

santafe.edu/news-center/new...
March 4, 2025 at 8:40 PM
Reposted by Juan L. Delgado-Davila
In my latest column for Science magazine, I discuss recent AI "reasoning" models -- how it works, to what extent it captures "genuine" reasoning processes, and what's needed to answer such questions.

www.science.org/doi/10.1126/...
Artificial intelligence learns to reason
Julia has two sisters and one brother. How many sisters does her brother Martin have?Solving this tiny puzzle requires a bit of thinking. You might mentally picture the family of three girls and one b...
www.science.org
March 20, 2025 at 6:40 PM