mirzala

 I remembered a film premise the other night — one of those speculative sci-fi setups where money doesn't exist at all, and instead every person's remaining lifespan is the currency, glowing on a display embedded somewhere on their arm, ticking down in real time, transferable to another person with a simple touch. I never took the premise seriously as science fiction when I first saw it; it read more like a metaphor for inequality than an actual technical proposal. But I started wondering, almost as an engineering exercise, what would genuinely have to exist under the hood for something like that to function as a real payment system, and the more I pulled on that thread, the more it turned into a strange tour through cryptography, biometrics, and distributed systems that already exist today in far less dramatic form. The first problem is the most basic one: how do you even represent "time" as a spendable, transferable unit without it being trivially counterfeited? Eve...

 I've spent the last few weeks reading through how modern security software actually works, and the thing that stuck with me wasn't a single dramatic fact — it was how many outdated assumptions are still floating around. People still talk about antivirus like it's a program that checks files against a list of known viruses. That model hasn't described reality for years. Here's what I took away, organized around the four questions I kept running into. Do You Need Antivirus If You Already Have a Firewall? Short answer: yes, and the reason comes down to where each one sits in your setup. A firewall watches traffic coming into and out of your network — it's the checkpoint at the border. Antivirus software watches what happens on the device itself, after something has already arrived. That distinction matters more than it sounds. A firewall can't inspect encrypted traffic in any meaningful way, so a threat riding inside an encrypted connection can slip past it ...