Cybersecurity
Vulnerabilities, exploits, cryptography and defensive engineering — written by people who patch real servers.
$ cat START_HERE.md
Self-hosted email is losing to Gmail's hard SMTP rejections. Self-hosted password managers are split down the middle. And self-hosted music is doing the opposite of what you'd expect.
Part 1 ended on a 70-gigabyte breach in 2021. Since then, hacktivists derailed trains, dumped molten steel on camera, and reached grids in three countries.
Forum Archaeology #1: I built plugins for this software when it ran half the internet's communities. Sixteen years after the exodus that should have killed it, vBulletin is still getting hit with critical, unauthenticated remote code execution.
$ ls -t ~/cybersecurity
A Minecraft host has one port that must face the internet and a dozen that must not. The JVM flag that turns your server into a remote shell, the protocol that broadcasts its own password, the SSH default that is actually the problem, and the second computer inside every dedicated box.
A fake GTA 6 ISO used a believable installer error to cover remote-access malware, browser-data theft, and destructive file wiping. The “License not found” message wasn’t the crack failing. It was there so the victim would stop looking.
Four tools solve four different problems that all get pitched as the same problem. Here's what each one does, where each one breaks, and the combination that covers a real homelab without paying an SSO tax you didn't see coming.
A growing list of open-core self-hosted projects, from Grafana to Planka, gate single sign-on behind an Enterprise tier. Here's which protocol actually gets paywalled, and what to check before you deploy.
Forum Archaeology #2. Three free PHP forum platforms started from the same premise a generation ago. One got hit with a CVSS 9.8 authentication bypass this June. One had eleven CVEs last year. One has stayed almost quiet. Same premise, three completely different fates.
A logic bug in screensharingd let attackers skip authentication entirely and land as root — no password required. Here's how it was found, patched, reverse-engineered, and finally weaponized.
Part 1 ended on a 70-gigabyte breach in 2021. Since then, hacktivists derailed trains, dumped molten steel on camera, and reached grids in three countries.
Cloudflare open-sourced its internal AI workspace. A technical breakdown of Dynamic Workers, Gatekeepers, capability-based access, and what it takes to self-host it.
There's a specific kind of silence that happens right after you realize an AI agent just deleted everything you own. Not the polite "let me
Forum Archaeology #1: I built plugins for this software when it ran half the internet's communities. Sixteen years after the exodus that should have killed it, vBulletin is still getting hit with critical, unauthenticated remote code execution.
CVE-2026-53359 lets a guest VM crash or potentially root your Proxmox host, and it hid in KVM's shared code for 16 years. What to patch and how to check.
CVE-2026-55010 lets an attacker take over your Bedrock server with one packet, no login required. What it actually affects, and how to patch it today.
$ ssh community@sudosecurity
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