How Email Works: SMTP, IMAP, SPF, DKIM, and DMARC Explained
Email is older than the web and was built to trust everyone. Follow a message from outbox to inbox through SMTP, MX records and IMAP, then s...
Oct 20, 2026
8 min
How DNS Works: The Internet's Phone Book Explained
DNS translates domain names into IP addresses, making the internet work behind the scenes. Learn how resolvers, root servers, DNS records, c...
Oct 19, 2026
8 min
What Happens When You Type a URL and Press Enter
Type a URL, press Enter, and a page appears in under a second. Here’s what happens in between: how the browser reads the address, DNS finds ...
Oct 13, 2026
7 min
Network Protocols for Beginners: A Practical Guide to the Top 8
Every time you open a website, send an email or SSH into a server, a handful of protocols do the heavy lifting. Here are the 8 most popular ...
Oct 11, 2026
11 min
What Actually Happens When You Hit Enter: TCP/IP, DNS, and HTTP From First Principles
Ever wondered what really happens after you type a URL and press Enter? Follow the request through DNS, TCP/IP, TLS, and HTTP, and build a m...
Sep 9, 2026
7 min
Attackers Passed DKIM and Hit 67,000 Inboxes in 3 Hours. We Scanned 666,803 Domains to See Why DMARC Didn't Stop Them
Microsoft's Q2 2026 report shows attackers passing DKIM at scale — 67,000 inboxes hit in 3 hours via Amazon SES. A daily scan of 666,803 Tra...