Hi from Ottawa,
Designing websites and following industry news here, which we want to share with you. The Joomla! Development Team has just released version 3.4.5! This is a very important security patch, everyone using Joomla 3 for their websites need to upgrade immediately. The security holes in question exist in the Joomla! core codes, meaning every unpatched Joomla! 3 website, regardless of setup and configurations, are at risk of being compromised. Publishing the patch and security vulnerabilties on the web would also have the undesirable side-effect of making the exploit more well-known - so it is imperative that everyone update asap.
Version 3.4.5 only contains security-related fixes, so in general, it shouldn't affect templates or frontend experience.
You can update your site in your Joomla admin panel, or download the packages on the Joomla! site.
If you need any assistances with Joomla upgrades or need to restore compromised Joomla site, we at Joomla Bliss are ready to help you. Give us a call!