What VPNs Actually Do (And the 3 Things They Don't)

Bitsize Curiosity — Tue, 07 Apr 2026 05:10:10 +0000

VPN marketing is some of the most misleading in tech. "Bank-grade encryption." "Complete anonymity." "Total online freedom." These claims are repeated so often that most people believe them and that belief creates a false sense of security.

Let's set the record straight.
What a VPN actually does: it creates an encrypted tunnel between your device and a VPN server, then routes your internet traffic through that server. This means your ISP (internet service provider) can no longer see which sites you're visiting — they only see that you're connected to a VPN. It also means websites you visit see the VPN server's IP address, not yours.

But here's what a VPN does not do. It does not make you anonymous. Every website you log into still knows exactly who you are. It does not protect you from malware, phishing, or bad downloads. It does not hide your activity from the VPN provider itself, you're simply trusting them instead of your ISP. And it absolutely does not protect your data once it reaches its destination.

The threat model matters enormously here. A VPN solves specific problems. It doesn't solve most of them.

🎬 I went deep on exactly how VPNs work and where they fail in this video: https://youtu.be/xdZPFPAZdMk

Before paying for a VPN subscription, make sure you understand what problem you're actually trying to solve.

What Is Malware, Really? A Plain-English Breakdown of Every Type

Bitsize Curiosity — Mon, 06 Apr 2026 07:55:01 +0000

Most people hear the word "malware" and think of one thing — a virus. But malware is an entire family of threats, and each type works completely differently. Knowing the difference isn't just trivia. It changes how you protect yourself.

Let's break it down simply.
Viruses attach themselves to legitimate files and spread when you share those files. They need your action to move. Worms, on the other hand, spread on their own — they exploit network vulnerabilities and can infect thousands of machines without anyone clicking anything.

Trojans are more deceptive. They disguise themselves as useful software — a free tool, a cracked app, a game mod — and once installed, they quietly open a backdoor for attackers to walk through. Ransomware, which has dominated headlines in recent years, encrypts your files and demands payment before you can access them again.

Spyware sits silently in the background, logging your keystrokes, capturing screenshots, and stealing passwords. You'd never know it was there. Adware is less sinister but deeply annoying — it hijacks your browser and bombards you with ads, often while sending your browsing behaviour to third-party advertisers.

Then there's rootkits — arguably the scariest category. They embed themselves so deep in your operating system that even your antivirus may not detect them. Removing a rootkit often means wiping the entire machine.

Understanding these categories helps you ask better questions: Is your antivirus actually catching rootkits? Does your backup survive ransomware? Are your free apps harvesting data?

🎬 I broke down every single malware type visually, with real examples, in this video: https://youtu.be/oOXC-1MhHjk

Each type has different attack vectors, different goals, and different defences. Once you understand the map, you stop treating all malware as the same thing — and you start making smarter decisions about your digital security.

Forem: Bitsize Curiosity

What VPNs Actually Do (And the 3 Things They Don't)

What Is Malware, Really? A Plain-English Breakdown of Every Type