Embedding Bokeh into a ReactJS app using BokehJS

This project highlights how to use BokehJS to (very) easily include Bokeh visualizations in an HTML webpage. The project uses the following tech: Bootstrapped with Create React App. Bokeh is an excellent python vizualization library that is quite popular among data scientists. Bokeh Homepage Flask is a python webserver microframework that allows you to quickly … Continue reading Embedding Bokeh into a ReactJS app using BokehJS

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Voice Controlled Christmas Tree Lights

What we're building: https://youtu.be/Lgtpi0k7FD8 It's a great project to get started with learning about IoT, and Alexa. Hardware Particle Photon micro-controllerAdafruit Featherwing mini-relay (https://learn.adafruit.com/mini-relay-featherwings/overview)Amazon Alexa (Dot in my case...)Optional for some extra holiday cheer: Adafruit NeoPixel Stick (https://www.adafruit.com/product/1426) Circuit Diagram Fritzing file can be found here: https://github.com/dvas0004/SmartMote/blob/master/SmartMote_v1.fzz Notes, tips and tricks about the Hardware The … Continue reading Voice Controlled Christmas Tree Lights

Z-Wave : Lessons Learned – Python OpenZwave

This article explains a few missing pieces of the puzzle I had when setting up a home automation network using ZWave. Most of this information is available publicly but it took a while to find or to actually make the connection between what I wanted and what I needed to look for in the documentation.   … Continue reading Z-Wave : Lessons Learned – Python OpenZwave

Scraping real estate prices using python and visualization using maps

TL;DR An interactive map, accurate as of 13/08/2018 showing property prices per square meter in various areas of Tallin: https://dvas0004.github.io/TallinnRealEstate/ Data shown is for 3-bedroom apartments (resource limitations). Green is less expensive, red is more expensive. Clicking on a data point will show a popup containing the actual price per square meter for that data … Continue reading Scraping real estate prices using python and visualization using maps

How we built the CyberSift Attack Map

Recently we launched a small site called the "CyberSift Attack Map" hosted at http://attack-map.cybersift.io. Any one involved in the InfoSec industry will be instantly familiar with the site:   It's basically a map of attacks which either trip some rule in a signature based IPS such as SNORT, or land in a honeypot. In this article we'll list … Continue reading How we built the CyberSift Attack Map

Nugget Post: Insert an alert / rule name in emails sent from ElastAlert

ElastAlert is a fantastic python module that makes it easy to setup near - realtime alerts and responses to entries of interest. A quick piece of information  which I didnt find clearly documented was how to insert an alert name into a custom subject line sending email alerts.  A typical custom email alert rule file would include … Continue reading Nugget Post: Insert an alert / rule name in emails sent from ElastAlert

Proxy re-encryption

What is proxy re-encryption? Proxy re-encryption lets Alice send Bob a message (M) via a semi-trusted proxy, without revealing Alice's private key to either the proxy or Bob, and without revealing the secret message to the proxy. As Wikipedia puts it: "Proxy re-encryption schemes are cryptosystems which allow third parties (proxies) to alter a ciphertext … Continue reading Proxy re-encryption