Tech Blog   (124 posts in ~17 years)

New Website, New Technology

Published 3 days ago February 18, 2026

Apple's "Protect Mail Activity" Doesn't Work

Published 1 month ago January 19, 2026

Immortal SSH Sessions

Published 6 months ago August 1, 2025

Fun with Gzip Bombs and Email Clients

Published 7 months ago July 22, 2025

Evolution Mail Users Easily Trackable Part 2

Published 7 months ago July 18, 2025

Evolution Mail Users Easily Trackable

Published 7 months ago July 9, 2025

Blocking Russian IPs

Published 11 months ago March 6, 2025

Sending Email Using Curl

Published 1 year ago December 7, 2024

Skiff.com Email's Various Privacy Failures

Published 2 years ago August 27, 2023

Self Building and Executing Dockerfiles

Published 4 years ago November 10, 2021

Sandbox Rust Development with Rust Analyzer

Published 5 years ago October 25, 2020

Manage Firewall from Dockerised NodeJS

Published 5 years ago October 17, 2020

Nginx Restic Backend

Published 6 years ago October 4, 2019

Twitter to RSS with Google Cloud Function

Published 7 years ago December 24, 2018

GPG Agent Forwarding

Published 8 years ago October 3, 2017

Keybase Browser Extension Insecure

Published 8 years ago August 5, 2017

Email Authentication Failure

Published 8 years ago July 28, 2017

Monitoring Expiry of GPG Keys

Published 8 years ago July 28, 2017

Lavabit Security Misconfiguration

Published 8 years ago July 6, 2017

Investigating a JavaScript/React Performance Issue

Published 8 years ago May 25, 2017

Private Location Tracking/Sharing

Published 8 years ago May 22, 2017

When Backup MXs Are Ignored

Published 9 years ago November 6, 2016

The Sad State of HTML Email Input Fields and IDNs

Published 9 years ago October 23, 2016

DNSCrypt Reduces Privacy

Published 9 years ago September 14, 2016

MeteorJS Sorting Troubles

Published 10 years ago November 28, 2015

An NFC PGP SmartCard For Android

Published 10 years ago April 21, 2015

Perfectly Private Android Networking (Almost)

Published 10 years ago April 20, 2015

Exploiting External Entities in RSS Feed Readers

Published 11 years ago December 8, 2014

DNS Validation of Email Addresses in Perl

Published 11 years ago December 1, 2014

GPGIT Broken by Breaking Change in GnuPG::Interface

Published 11 years ago March 13, 2014

Security Bug in Thunderbird - Open Websites in Tabs

Published 12 years ago January 26, 2014

Transparent Access to Tor Hidden Services

Published 12 years ago December 1, 2013

Transparent Access to I2P eepSites

Published 12 years ago November 30, 2013

Disk Caching with SSDs on Linux and Windows

Published 12 years ago November 17, 2013

FastMail.FM Security Vulnerabilities

Published 13 years ago June 21, 2012

Protecting Your GNU/Linux System from Dropbox

Published 13 years ago May 29, 2012

New Version of The Email Privacy Tester

Published 13 years ago May 6, 2012

Android Privacy Guard and Subkeys

Published 13 years ago April 10, 2012

Smart Cards and SSH Authentication

Published 14 years ago February 1, 2012

Punching through The Great Firewall of T-Mobile

Published 14 years ago January 5, 2012

Extended Life Phone Batteries

Published 14 years ago January 2, 2012

Secure, Free, Incremental and Instant Backups for Linux

Published 14 years ago December 30, 2011

TextSecure and the inPulse SmartWatch

Published 14 years ago December 24, 2011

Understanding DNSSEC

Published 14 years ago December 5, 2011

Defending Against Spear Phishing with Exim

Published 14 years ago October 3, 2011

Toughening up RequestPolicy

Published 14 years ago September 6, 2011

Solving the SSL CA Debacle Using Multi-Signed Certs

Published 14 years ago September 5, 2011

Protecting a Laptop from Simple and Sophisticated Attacks

Published 14 years ago August 26, 2011

Preventing Web Tracking via the Browser Cache

Published 14 years ago August 21, 2011

Mozilla Security Bug Reveals Web Proxy Credentials

Published 14 years ago August 16, 2011

Protecting PGP Smartcards from Observation Attacks

Published 14 years ago August 14, 2011

View-Source URIs and RequestPolicy Bypass

Published 14 years ago July 11, 2011

FireGPG on Firefox 5

Published 14 years ago July 5, 2011

Boxee.TV Helps Its Self To Your Viewing Habits

Published 14 years ago June 15, 2011

2011 EU Cookie Legislation - Opinion of a UK Web Developer

Published 14 years ago May 27, 2011

Microsoft Exchange Private Appointments Aren't Private

Published 14 years ago May 16, 2011

Android Application Firewall: DroidWall

Published 14 years ago March 30, 2011

Dropbox Mobile: Less Secure Than Dropbox Desktop

Published 14 years ago March 10, 2011

Advertise Your Wifi in Your Customers' Kik Messages

Published 14 years ago March 8, 2011

LastPass Vulnerability Exposes Account Details

Published 14 years ago February 26, 2011

Bypassing "RequestPolicy" Using Protocol Relative URLs

Published 15 years ago February 17, 2011

Automatically Encrypting all Incoming Email, Part 2

Published 15 years ago February 16, 2011

Case Study: Multiple Convore Security/Privacy Problems

Published 15 years ago February 11, 2011

When Third Party Email Providers Leak

Published 15 years ago February 8, 2011

Abusing HTTP Status Codes to Expose Private Information

Published 15 years ago January 21, 2011

Using Linux to Monitor Room Temperature Remotely and Cheaply

Published 15 years ago January 19, 2011

Automatically Encrypting all Incoming Email

Published 15 years ago January 13, 2011

New Year Bug in At Command

Published 15 years ago December 31, 2010

Publishing PGP Keys in the DNS

Published 15 years ago December 15, 2010

Using HTTPS Everywhere from Perl

Published 15 years ago November 13, 2010

Why Does this Website Generate SSL Warnings?

Published 15 years ago November 7, 2010

Kik Messenger Insecure

Published 15 years ago November 7, 2010

Why no Firesheep for IM?

Published 15 years ago November 5, 2010

Tor Circuits with Two Hops on Ubuntu

Published 15 years ago September 20, 2010

Scalable Vector Graphics and XSS

Published 15 years ago July 29, 2010

iOS 4 iPhone Email Privacy Leak

Published 15 years ago July 13, 2010

Changing from GoogleMail to GMail Killed My Phones Battery Life

Published 15 years ago June 18, 2010

Setting up IPv6 is Easier Than You Think

Published 15 years ago May 28, 2010

Getting The Search Term From Clicks From Google SSL

Published 15 years ago May 24, 2010

DuckDuckGo Searches Are Not Anonymous

Published 15 years ago May 19, 2010

Making BitTorrent Safe to Use Over Tor

Published 15 years ago May 18, 2010

Exim Trick to Extract Received Header IP Addresses

Published 15 years ago May 5, 2010

Extract Domains from Email Using Exim

Published 15 years ago April 30, 2010

DNSSEC Will Kill Commercial CAs

Published 15 years ago March 30, 2010

Use Random Passwords Which You Can't Remember

Published 15 years ago March 2, 2010

Secure URL Redirects using Apache, ModRewrite and ModSecurity

Published 15 years ago February 27, 2010

Blocking Comment Spam Using ModSecurity and Hidden Fields

Published 16 years ago February 20, 2010

Automated Email Privacy Tester

Published 16 years ago February 13, 2010

How to Reliably Crash the iPhone's E-mail Client

Published 16 years ago February 11, 2010

Android Email Information Leak

Published 16 years ago February 6, 2010

ClickJacking and SSL Protection in Apache

Published 16 years ago January 26, 2010

Android Battery Graphing Source Code

Published 16 years ago January 24, 2010

DNS Pre-fetch Exposure on Thunderbird and Webmail

Published 16 years ago January 23, 2010

SpamAssassin 2010 Bug

Published 16 years ago January 1, 2010

JSAPI Incompatible with XSLT

Published 16 years ago December 13, 2009

Debenhams Fails at Sending Email

Published 16 years ago December 10, 2009

JavaScript Comma Quirk

Published 16 years ago December 9, 2009

Apache Forward Proxying with Compression

Published 16 years ago November 18, 2009

Compressing JavaScript on the Fly

Published 16 years ago November 9, 2009

Poundhost vs RapidSwitch vs GameServersDirect vs FPSGame

Published 16 years ago November 1, 2009

Compressing CSS on the Fly

Published 16 years ago October 28, 2009

Android Email Sucks

Published 16 years ago October 26, 2009

Gumtree Rental Fraud

Published 16 years ago October 16, 2009

Monitor Your Website Automatically From Cron

Published 16 years ago October 8, 2009

Apple Mail Privacy Hole

Published 16 years ago October 2, 2009

Your Email Address Isn't Safe

Published 16 years ago September 24, 2009

BBC Wrong About Mobile Broadband Speeds

Published 16 years ago September 22, 2009

Poundhost vs RapidSwitch

Published 16 years ago September 21, 2009

Poundhost Data Storage

Published 16 years ago September 8, 2009

Trusting Replies to Trusted Email Messages

Published 16 years ago August 5, 2009

Redirecting Pages through CGIProxy with Squid

Published 16 years ago August 4, 2009

Detecting Bad ClamAV Signatures by Scanning Ham

Published 16 years ago July 14, 2009

Automatically Expiring Email Addresses

Published 16 years ago June 3, 2009

Accessing Memcached from Exim

Published 16 years ago May 13, 2009

Whitelist Recipients in Exim

Published 16 years ago April 25, 2009

3G Network Latency Comparison

Published 16 years ago April 23, 2009

Exim Client Authentication Recipe

Published 16 years ago April 21, 2009

CommuniGate Pro Contact Folders as a Whitelist Source for Exim

Published 16 years ago April 17, 2009

Accessing Rejected Spam Solution

Published 16 years ago April 13, 2009

Cross Browser Compatible XSLT

Published 16 years ago April 11, 2009

Mitigating Spear Phishing

Published 16 years ago April 8, 2009

Livejournal opt-out of Phorm

Published 16 years ago April 8, 2009

Google Phone Battery Usage Graphing

Published 16 years ago March 30, 2009

Phorm - Webwise

Published 16 years ago March 28, 2009