The Linux OOM Killer decides what dies under memory pressure. Protect sshd, mysqld, and other critical processes with oom_score_adj via a small script.

In 2012 I traced a state-aligned Twitter proxy tied to Venezuela's ruling party. OSINT lessons for spotting subtle, credential-phishing nation-state infra.

A 2012 Linux kernel bug caused CPU lockups after 208.5 days of uptime due to an integer overflow in sched_clock(). RHEL 5/6 lesson: patch and observe uptime.

The 2012 leap second broke Reddit, Yelp, Java apps, and more. A retrospective on how fragile timekeeping bit the cloud, and what SRE teams should do today.