Joomla! security 101
J upgrade presentation
Tour of sh404SEF - SEO and security for Joomla
Joomla, open source and the power of volunteers
Adding and modifying LESS in your web site templates
Rethinking internationalization in Joomla 2.5 and beyond
SEO, Analytics and Security with sh404SEF (JoomlaDay South Africa, 2011, Cape Town)
Cracking the inbound marketing code joomla!dagen 2014
What's coming in Joomla 4 - Joomla Day Budapest 2013
Joomla SEO Overview featuring sh404SEF
Fixing Joomla's SEO problems with sh404SEF
Wordpress security best practices - WordCamp Waukesha 2017