So far Apple has released four new security updates this month, all on April 14th. These are: , , , and .

The iOS 4.3.2 Software Update patches a number of Apple products including libxslt (a programming language library for the GNOME project--a graphical user interface and desktop environment), QuickLook (a quick preview feature for files) and WebKit (a layout engine for browsers which allows them to render web pages).

The iOS 4.3.2 Software Update, along with the Security Update 2011-002 and the iPhone update, updates the Certificate Trust Policy to address the threat of the SSL certificates stolen last month. SSL certificates are a secure means for a Website to prove itself trustworthy to your browser. If your browser detects that the certificates are fraudulent, it should block the site and give you a warning. However, if you were to visit a site with fraudulent certificates your security and privacy could be at risk. The iPhone update also updates QuickLook, and both the iPhone update and Safari 5.0.5 also patch Webkit.

You should always keep your Mac updated; for more information about each update, check out the Apple security update page .

[Photo via (Flickr)]