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How Deep Packet Inspection Works: Reading the Contents, Not Just the Address
Deep packet inspection examines encrypted traffic patterns to identify protocols. Learn how DPI blocks VPNs, why it's expensive, and how obfuscation tools respond.
SNI Inspection: Why Censors Can See Your Destination Even With HTTPS
How Server Name Indication leaks domain names during HTTPS connections. Why this happens, which countries exploit it, and emerging fixes like ECH.
IP Blocking and Why It Backfires: The Collateral Damage Problem
How IP blocking works, why governments and services use it, and why it often takes down unrelated websites. A technical explanation without the marketing.
DNS Blocking: How the Cheapest Censorship Works (and Why It Fails)
How DNS blocking censors the internet, why governments use it, and why it's trivial to bypass by switching DNS resolvers or using encrypted DNS.
How Websites Actually Get Blocked: Technical Methods Explained
Learn how DNS filtering, IP blocking, DPI, and other technical methods block websites. Understand what each costs censors and how circumvention works.
What Is Internet Censorship? An Overview
Learn what internet censorship actually is, who enforces it, and how it works—from government blocks to surveillance. A guide for beginners and technical readers alike.
How to Spot a Phishing Attempt: A Technical Guide
Learn to identify phishing emails, fake login pages, and social engineering attacks. Understand the red flags and technical defenses that protect your accounts.
How Passwords Actually Get Leaked: The Real Threats
Most password breaches don't come from hackers cracking codes. Learn where passwords really leak, how credential stuffing works, and what actually protects you.
Public Wi-Fi Security: What Actually Threatens You in 2026
Understand real risks on public Wi-Fi: rogue networks, metadata exposure, and phishing. Learn what HTTPS protects, what it doesn't, and where VPNs help.
How a Firewall Works: From Your Router to Nation-State Censorship
Learn how firewalls actually filter network traffic. We explain packet filtering, stateful inspection, and why the Great Firewall is just a very large firewall with extra tools.
How Digital Certificates and Certificate Authorities Work
Understand how certificates bind identities to encryption keys, why Certificate Authorities matter, and how the chain of trust secures the web.
Public Key Cryptography: How Two Strangers Can Share Secrets
Understand public key cryptography without the math. Learn how asymmetric encryption powers HTTPS, code signing, and secure communication.
How HTTPS Works: What the Lock Icon Really Means
Understand HTTPS encryption, certificate verification, and what the lock icon actually guarantees. Learn why it matters for your privacy.
How DNS Works: The Internet's Phone Book
Learn how DNS translates domain names into IP addresses, why it's unencrypted by default, and how it became the internet's most common censorship tool.
What Is an IP Address? A Technical Explanation
Learn how IP addresses work: postal addresses for devices on the internet. Understand IPv4, IPv6, public vs private IPs, geolocation, and why your IP isn't your identity.
How the Internet Actually Works: From URL to Response
Understand the real journey your data takes when you visit a website. Learn about DNS, packets, routers, and where surveillance can occur.
VPN Protocols Compared: WireGuard, OpenVPN, and IKEv2
Technical comparison of three VPN protocols: WireGuard's modern speed, OpenVPN's maturity, and IKEv2's mobile reliability. Understand the real tradeoffs.
Is Using a VPN Legal? What Actually Happens in Restricted Countries
VPN legality varies by country. Most places allow it freely. Some governments restrict or ban VPNs entirely. Here's what the real rules are, and why.
Will a VPN Slow Down My Internet? Yes, Usually — Here's Why
VPNs add latency and overhead. Learn why slowdowns happen, what's normal (5-30%), and how to minimize the impact.
No-logs VPN claims: what they actually mean
What do 'no-logs' VPN claims actually mean? Learn how audits work, why jurisdiction matters, and the right questions to ask instead of trusting marketing.