Happy Cybersecurity Awareness Month 🎃 If your idea of “training” is clicking through phishing slides… this isn’t that, but if you want more technical cybersecurity training, we've teamed up with @WiCySorg to bring you something better. Applications for Cohort 3 of our Cyber Competency Builder open today! This cohort will cover our Web App Pentesting – Jr Analyst course. If you're interested in offensive security skills, this one is for you. Register here: jht.link/WiCyS-Cohort3

Sirius through the telescope. 8.6 light-years of light, split into color by our own atmosphere. The brightest star in the sky, dancing

Math dance

Congrats Boring Company team!

Learning to code is scary. This course actually gets that. 🐍 No setup. No "install Python and 47 dependencies before you begin." Just interactive code playgrounds baked directly into the lessons. Write it, run it (or watch it auto-run), and if you break it? Hit reset. Try again. The best way to learn Python is to actually write Python. This removes every excuse not to. Get Brandon's full course here 👉 jht.link/python-fundamentals #Python #LearnToCode #PythonForBeginners #CodingCourse #Technology

20% Off Flash Sale 💥 Ran out of 1000 flyers early @DEFCON. Not everyone knew our “Exclusive Show Discount” code DC20. We didn’t think that was fair. Guess we’re turning it into a Flash Sale for EVERYONE! 😏 Hurry... Expires Aug 31. Forget the noise. Get to JustHacking.com!

🚨: You are looking at NOBLE PRIZE WINNING work. This is timelapse of stars orbiting the supermassive black hole that lies at the heart of the Milky Way over a period of nearly 20 years.

August 19, 2026 @ 4pm PT - Join us live for a chat with the authors of Make: Volume 98 about getting out of the workshop and putting rubber to the road for our Action issue! Register here: meet.zoho.com/ahvn-kmx-ime

🎆 Fireworks Are Fading 🎆 20% Off Ends Mid ET Tomorrow. Been eyeing great courses from John Hammond or our 30+ All-Stars? Now's the time! Red team, blue team, beginner, advanced, lots free, some nameyourprice, all affordable. What are you waiting for? Forget the noise. Get to JustHacking.com 🤓 #ethicalhacking #hacking #cybersecurity #AI #training

The Mechanical Calculator by KingTut is a fully mechanical calculator is designed to solve times tables in seconds. Entirely 3D-printed, it requires no glue, screws, or additional hardware for working.

Quantum mechanics uses specialized symbols to describe the behavior of matter and energy at microscopic scales. An alphabetical guide highlights core concepts like angular momentum, bound states, the fine structure constant 1/137, photon energy hν, the Schrödinger equation EΨ=ĤΨ, reduced mass mM/(M+m), Laplacian ∇², and uncertainty ΔxΔp. These ideas are used to build the transistors in every computer chip and the lasers in fiber optic networks that connect the world.

The universe is written in the language of mathematics. ~ Galileo Galilei

Hot take: "just use Rust" isn't always the answer. 🌶️ Brandon Keath explains why Python still wins for prototyping — build the tool, prove the concept, THEN port it to Go or Rust if you actually need the speed. Bonus: GoFire exists. It's Python Fire's Go cousin and it's about to save Cobra users a lot of pain. Learn more about building with Python in our FREE Upskill Challenge: justhacking.com/author/brand… #Python #Rust #Go #DevTok #CodingTips

1 More Day!⌛️Free #OpSec course by #OSINT wizard @mish3alkhan ends tomorrow. Get the ultimate in #privacy training on us.

Father's Day Gift for Everyone 🎁 Free OpSec Course by OSINT Master @mish3alkhan! Sock puppets, burners & virtualization… Oh my! This Operational Security training is not just for Dads or cybersecurity pros! For a limited time, get the ultimate in online privacy training on us.

🎁 JHT’s Gift to the Community - Hack a Free Vulnerable Web App to Learn Pentesting CrossWind Systems Corporation is a fictitious company created for JHT’s web app courses. Their entire online presence, vulnerabilities and all, is publicly available for EVERYONE! crosswindsystems.com/ In this episode of Just Hacking Tips, Mike Lisi walks us through some of the learning opportunities on CrossWind Systems. If you would like to play with a live, purposely vulnerable web app, have at it. Prefer more structured, curriculum-based training, try JHT’s Web App Jr Analyst course 🚨 ⏰️ Only $80! Launch discount ends at midnight ET May 31. justhacking.com/course/web-a… #cybersecurity #training #owasp #webapp #ctf

Fast Fourier Analysis in action. Any complex waveform, sound, or shape can be perfectly reconstructed as the sum of simple rotating circles (epicycles).

CERN open-sources its entire KiCad component library blog.adafruit.com/2026/05/12…

A group of astrophysicists has reanalyzed the masses of galaxy clusters and they say that we might not need dark matter after all.

max⁡(∣x∣,∣y∣,∣z∣,∣w∣)=1 You’re witnessing a 2D projection of a 3D shadow cast by a 4D tesseract. As it rotates through the W-axis, the "inner" and "outer" cubes swap roles: a spatial inversion that feels like a glitch only because our biology is trapped in 3-space. It’s a hauntingly beautiful reminder that our "reality" is often just a lower-dimensional cross-section of a much more complex structure. Perspective is everything. This is used in high-dimensional data visualization, hypercube topologies in parallel computing networks, and exploring the geometry of extra dimensions in theoretical physics.