Launch HN: SubImage (YC W25) – See your infra from an attacker’s perspective
Hi HN! I’m Alex, and along with my co-founder Kunaal, we are thrilled to introduce SubImage (https://subimage.io): a tool that lets your security team fix issues before they’re found by attackers. Teams use SubImage to map their infrastructure and emulate adversary behavior. Here’s a video of how I would use it to hack our own […]
Breaking into apartment buildings in five minutes on my phone
Background A few months ago I was on my way to catch the SeaBus when I walked by an apartment building with an interesting looking access control panel. I wrote down the “MESH by Viscount” brand name and made a note to look into it when I had a chance. I ended up just missing […]
Introduction to Stochastic Calculus
Notation and code for generating visuals are presented in the Appendix. 0. Introduction This document is a brief introduction to stochastic calculus. Like, an actual introduction. Not the textbook “introductions” which immediately blast you with graduate-level probability theory axioms and definitions. The goal of this blog post is more to focus on the physical intuition […]
Laravel Cloud
You set your maximum number of application replicas, and Cloud automatically scales within those limits based on CPU usage. Unlike serverless platforms, you have complete control over your scaling limits, and you only pay for replicas when they’re actually running – giving you both flexibility and cost predictability.
Type 1 diabetes reversed by new cell transplantation technique
Transplanting insulin-producing cells along with engineered blood-vessel-forming cells has successfully reversed type 1 diabetes, according to a new preclinical study. With further testing, the novel approach could one day cure the as-yet incurable condition. The pancreatic islet is the only human tissue that produces insulin in response to rising blood glucose levels. In type 1 […]
Electric Propulsion Magnets Ready for Space Tests
24 Feb 2025 4 min read Paihau-Robinson Research Institute’s applied-field magnetoplasmadynamic thruster uses a bagel-shaped magnet to accelerate ions to very high speeds. Randy Pollock Nestled at the foot of a steep, forested hill, 16 kilometers outside Wellington, New Zealand, is a rather unassuming building; one among many on a research campus that was first […]
Grok 3 is highly vulnerable to indirect prompt injection
Grok 3 is highly vulnerable to indirect prompt injection. xAI’s new Grok 3 is so far exclusively deployed on Twitter (aka “X”), and apparently uses its ability to search for relevant tweets as part of every response. This is one of the most hostile environments I could imagine with respect to prompt injection attacks! Here, […]
The Wrongs of Thomas More (Wrong 5)
A lengthy digression into the life of a saint A cool quote from the OED In my previous post I talked about spelunking through the Oxford English Dictionary’s definition of “wrong” to see how the usage of that word had developed down through the ages. Embedded in that definition was a citation that caught my […]
Show HN: I scrape Steam data every month and it’s yours to download for free
Save over 120 hours of scraping Every month we scrape Steam data for you. So don’t worry about having to create scripts, massage the data and wait for the results. We will do it for you. Rather, jump right into analyzing the data. Leverage the power of AI to help answer your questions about the […]
Is Ketamine Neurotoxic?
I discuss ketamine, and my person experience with it, in more detail here. At recreational doses, ketamine is addictive, destroys the bladder, and is toxic to the central nervous system. Microscopic lesions (including but not limited to so-called “Olney’s lesions”) in both grey and white matter are evident already after three months of high-dose ketamine […]