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I created a short video and slide deck to help illustrate how a blockchain works. This is not about Bitcoin, but is intended to help people who aren’t as experienced with Merkle trees understand that the idea of a blockchain is to be able to independently verify where and when a thing happened without being ..
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Originally on Foreign Policy, December 22nd, 2020. Wargames can provide essential cybersecurity training for soldiers. But they won’t succeed unless the players confront real, independent hackers. BY TARAH WHEELER, AMY ERTAN | DECEMBER 22, 2020, 7:53 AM In recent years, NATO has begun to incorporate some innovative new cyberwarfare games and exercises into its annual wargames. But there is ..
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I started this project when I was 19. I remember sitting on the lawn at Carroll College in Helena, Montana, and starting that first stitch up in the top left corner in DMC 420. The Lady of Shalott is a Teresa Wentzler pattern that came out in the late 1990s, and I’ve now finally finished ..
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(originally posted https://tisiphone.net/2018/03/07/the-infosec-amnesty-qa/ with thanks to Lesley “Hacks4Pancakes” Carhart) Here’s why I know about this My tech journey started in academia, where I spent my time writing math in Java. As I transitioned more and more to tech, I ended up as the de facto PKI manager for several projects. I handled certificate management while ..
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I’m glad I keep good backups. When backing up your Kubuntu box, do not just drag and drop one home folder from a hard disk to another hard disk. Your ssh keys will not be copied over, even though you may have opened the Dolphin file manager over with the command sudo dolphin To ensure ..
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#!/bin/bash book=$1 [[ -z $book ]] && { echo “No argument supplied, exiting!”; exit 1; } [[ ! -e $book ]] && { echo “Can’t find a file with the name $book, exiting”; exit 1; } title=${book%.*} bookcounter=0 linecounter=0 sed -i ‘s/\r$//’ “$book” while read line do ((linecounter+=1)) if [[ $linecounter -gt 300 && -z ..
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