Cyber Security Requires Cautious Logic

If we don’t carefully distinguish between necessary and sufficient when we are analyzing information assurance systems, we may become dangerously confident in a system that is actually quite weak. This Isn’t A New Problem Cryptography enthusiast Edgar Allan Poe wrote, in “A Few Words On Secret Writing” in Graham’s Magazine in July 1841: “Few persons […]
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Back up and encrypt

A little over thirty years ago I managed a small mini-computer. We had half a dozen dumb terminals (ADM 3a’s to be specific), a printing terminal and a couple other CRT devices. The total disk storage varied at times from five to seven megabytes. We backed up on 9-track magnetic tape. The tape drive we […]
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