Kate's Comment

Thoughts on British ICT, energy & environment, cloud computing and security from Memset's MD

Can we trust WhatsApp’s privacy?

Summary / TL;DR WhatsApp looks great on face value and it’s underlying technology is awesome. However, there are some things about it which don’t add up for me, eg. it’s apparently non-existent business model and lack of open sourcey-ness. Further, our faith in it relies too heavily on one person, Moxie Marlinspike, who chooses to remain largely anonymous; a choice…

How to secure Mac OSX Screen Sharing with SSH tunnelling

I want to be able to access my home machines over the Internet when I’m at work, preferably via a GUI/WIMP. It is relatively straight-forwards to expose a machine on your home network using port-forwarding on your router, but is it secure just to send Screen Sharing over the Internet? For that matter, if you’re on a semi-untrusted local network…

Alt-coins: Bitcoin’s competitors. Which cryptocoins will survive?

I’ve not written much about my new hobby; cryptocoin (Bitcoin and its ilk) mining. A few months ago I created a virtual company, CipherMine, to mine cryptocoins like Bitcoin. I won’t go into mining in detail here, but it is effectively printing virtual money. CipherMine is currently making over $3,000 per day of virtual currencies. Our real interest is in…

What do PGP trust levels mean and which should I use?

Following my posts on how to send and receive secure, encrypted emails in Thunderbird with PGP and how to add additional email addresses to your GPG identity, many of the people I’ve been encouraging to use PGP have asked how to decide what level of trust to set for someone’s key. The definitive guide is here here, a modified excerpt…

How to add additional email addresses to your GPG identity (and a face pic)

This is an addendum to my article on how to encrypt email using PGP and Thunderbird. I have many email addresses; my Memset one, my personal one (at craig-wood…), my Wood Tech one and others. All of these are tied into just one PGP identity which makes life much simpler both for me and also people wishing to communicate with…

How to send and receive secure, encrypted emails in Thunderbird with PGP

A step-by-step guide to setting up and using PGP encryption with email for Thunderbird.