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2023
5931

Wolf Incident Postmortem

Incident #210 Status Complete, one action item outstanding. Summary Sentinel consumed by wolf after repeated false alarms. Impact Loss of sentinel. No flock impact. Root causes Sentinel generated noisy alerts due to premature deployment, incomplete training, and overly monotonous task. Oncalls failed to respond to…

5934

Huge pages are a good idea

Nearly all programs are written to access virtual memory addresses, which the CPU must translate to physical addresses. These translations are usually fast because the mappings are cached in the CPU's Translation Lookaside Buffer (TLB) . Unfortunately, virtual memory on x86 has used a 4 kiB page size since the 386 was…

5936

Pwned or Bot

It's fascinating to see how creative people can get with breached data. Of course there's all the nasty stuff (phishing, identity theft, spam), but there are also some amazingly positive uses for data illegally taken from someone else's system. When I first built Have I Been Pwned