I subscribe to Sys Admin magazine because it offers excellent articles. One that is available online is Bryan Smith's Dissecting PC Server Performance. He explains the major bottleneck issues in traditional CPU architecture and how the AMD Opteron is an improvement. I found the article highly technical yet readable and enlightening. This is a must-read before you buy your next high-load server.
MITRE ATT&CK Tactics Are Not Tactics
Just what are "tactics"? Introduction MITRE ATT&CK is a great resource, but something about it has bothered me since I first heard about it several years ago. It's a minor point, but I wanted to document it in case it confuses anyone else. The MITRE ATT&CK Design and Philosophy document from March 2020 says the following: At a high-level, ATT&CK is a behavioral model that consists of the following core components: • Tactics, denoting short-term, tactical adversary goals during an attack; • Techniques, describing the means by which adversaries achieve tactical goals; • Sub-techniques, describing more specific means by which adversaries achieve tactical goals at a lower level than techniques; and • Documented adversary usage of techniques, their procedures, and other metadata. My concern is with MITRE's definition of "tactics" as "short-term, tactical adversary goals during an attack," which is oddly recursive. The key word in the tacti...
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