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YubiKey 4 series GPG and SSH setup guide

Written for fairly adept technical users, preferably of Debian GNU/Linux, not for absolute beginners.

You'll probably be working with a single smartcard, so you'll want only one primary key (1. Sign & Certify) and two associated subkeys (2. Encrypt, 3. Authenticate). I've published a Bash function which automates this slightly special key generation process.

Chromatic aberration effect - a simple implementation in JavaScript

A chromatic aberration is an optical effect caused by one or more color channels being displaced. Although it is an optical failure and should be avoided for displaying or image capturing devices, chromatic aberration can be used to make graphics be more realistic in some other applications like 3D games.

The following codes is an example of implementing the effect using ImageData API of HTML5 canvas. By fetching and manipulating pixel data of the image, the chromatic aberration effect is easy to achieve.

<html>
<body>
<canvas id="canvas"></canvas>

How to Build a Successful Information Security Career (Daniel Miessler)
- https://danielmiessler.com/blog/build-successful-infosec-career/#gs.DtVCbbw
The First Steps to a Career in Information Security (Errata Security - Marisa Fagan)
- http://blog.erratasec.com/2010/04/first-steps-to-career-in-information.html#.WFrbofkrIuU
Hiring your first Security Professional (Peerlyst - Dawid Balut)
- https://www.peerlyst.com/posts/hiring-your-first-security-professional-dawid-balut
How to Start a Career in Cyber security
- https://www.concise-courses.com/security/how-to-start-your-career/
How to Get Into Information Security (ISC^2)
https://www.isc2.org/how-to-get-into-information-security.aspx

	#!/bin/bash

	####
	#### Delete (remove) all items from Aws Dynamo DB table, by specifing table name and primary key
	####
	#### Forked from https://gist.github.com/k3karthic/4bc929885eef40dbe010
	####
	#### Usage:
	#### clean-dynamo-table TABLE_NAME PRIMARY_KEY
	####

	#!/bin/bash

	# Download GitKraken
	wget https://release.gitkraken.com/linux/gitkraken-amd64.tar.gz

	# copy the downloaded file into /opt directory
	cp gitkraken-amd64.tar.gz /opt/

	cd /opt

	#!/bin/sh

	# Firefox Developer Edition install
	# No need to download this script, just run it on your terminal:
	# $ curl -L git.io/firefoxdev \| sh
	# When you need to update Firefox Developer Edition, run this script again.

	START_CMD="firefox-dev"
	INSTALLATION_DIR="/opt/${START_CMD}"