https://alandonovan.site/Alan Donovan is a Brisbane-based cyber security practitioner and STM32 embedded/OT software engineer, focused on SOC analysis, threat intelligence and detection engineering. Daily threat briefs covering new vulnerabilities, actively exploited CVEs and security news, plus lab write-ups and embedded-security notes. 2026-11-07T11:18:14+10:00 Alan Donovan https://alandonovan.site/ Jekyll © 2026 Alan Donovan /assets/img/favicons/favicon.ico /assets/img/favicons/favicon-96x96.png 2026-11-07T07:00:00+10:00 2026-11-07T07:00:00+10:00 https://alandonovan.site/posts/threat-brief/ Alan Donovan

OpenSSH 'SSHole' exploited within hours, WordPress Core flaw in KEV, SonicWall SAML MFA bypass, Zyxel switch zero-day, plus OT advisories.

2026-11-01T09:00:00+10:00 2026-11-07T10:58:49+10:00 https://alandonovan.site/posts/welcome/ Alan Donovan

Cyber security analyst and STM32 embedded/OT engineer. Daily threat briefs, detection labs and write-ups.

2025-02-02T13:57:00+10:00 2026-02-14T14:01:08+10:00 https://alandonovan.site/posts/CRC-8/ Alan Donovan

Cyclic Redundancy Checks (CRCs) are short, fixed-length checksums used to detect accidental changes to data. They’re common in networking, storage devices, and embedded systems, as well as in certain cybersecurity applications where integrity checking is crucial. This post focuses on CRC-8, a variant that produces an 8-bit checksum. What is CRC-8? A CRC is computed over a message (e.g., a seq...

2025-02-02T13:57:00+10:00 2025-02-02T14:03:29+10:00 https://alandonovan.site/posts/OS-Detection/ Alan Donovan

TTL and Nmap for OS Discovery Hey There, Security Explorers! Ever been curious about what operating system (OS) is running on a target machine, but not sure where to start? One of the coolest tricks is to look at something called Time to Live (TTL). And when it comes to scanning and discovering remote systems, Nmap is pretty much everyone’s best friend. Let’s walk through how TTL works and ho...