Jamie Scaife - United Kingdom 🇬🇧 

Automating the Integrity Verification Process for Downloaded Software

Wednesday 19th June 2019

I've developed a Bash script that can automatically download and perform integrity verifications for various pieces of software, including Ubuntu ISOs, Kali Linux and some Windows software.

The reason for creating this is to make it significantly easier, more reliable and faster to acquire integrity-checked versions of the software that I regularly use. Previously, downloading and updating this software was a manual process, which is naturally slow and unnecessarily prone to human error.

I've released the script under the MIT license, and it's available on my GitLab profile: https://gitlab.com/jamieweb/dl-integrity-verify Continue reading...

Security

My Interview With Giulio D'Agostino

Saturday 11th May 2019

Earlier this year, I was interviewed by Giulio D'Agostino for his new book and podcast 'Conversations in Cyberspace'. My podcast episode has now been released - if you'd like to listen, it is available on Anchor.fm, and various other platforms:

During the interview, I was asked about multiple topics including reverse engineering, Tor Onion v3 services, Linux and the browser extension ecosystem. I hope you enjoy, and thank you again to Giulio for having me on the show!

Please note that I have no commercial affiliation with Giulio or any of his projects. Continue reading...

Security Meta

Managing Your SSH known_hosts Using Git

Tuesday 23rd April 2019

One of the largest challenges with infrastructure deployment and automation is managing and verifying the SSH server key fingerprints for your servers and devices. Each new server will have its own unique SSH fingerprint that needs to be verified and accepted before your devices (e.g. Ansible control machine, log collector) can securely connect via SSH.

Often, verifying and distributing the fingerprints is a manual process, involving connecting to machines to check and accept the fingerprint, or manually copying lines to your ~/.ssh/known_hosts file. In some cases, people also unfortunately bypass the warnings and accept the fingerprint without checking it, which fundamentally breaks the security model of SSH host authenticity checking.

I have recently solved all of these challenges by implementing a new solution for managing my saved SSH server key fingerprints (known_hosts). I'm storing a verified copy of each fingerprint centrally in a public Git repository, and I can then pull from the repository on all of my machines/devices whenever the key changes. This allows me to securely and semi-automatically distribute the fingerprints with minimal manual work required. Continue reading...

Security

Installing UBports Ubuntu Touch on the Meizu MX4 Ubuntu Edition

Thursday 21st March 2019

I recently decided to switch back to using my Meizu MX4 Ubuntu Edition that I originally purchased in 2015 (which is what the first article on this blog was about).

Unfortunately, Canonical decided to end development of Ubuntu Touch due to a lack of market interest, but luckily the UBports community took over development, and are running the project successfully to this day as the (soon to be at the time of writing) UBports Foundation. Continue reading...

Ubuntu