Apple has released an update to its iOS software for the iPhone, iPad and iPod touch. This latest release, version 4.3.2, includes a number of bug fixes, but also features some important security patches. It notably blacklists fraudulent digital certificates that were obtained from Comodo in March. The update also fixes four other issues, two with WebKit, the HTML rendering framework, and one with libxslt and another with QuickLook.
The update is available when you connect an iOS device to iTunes, and is around 650 MB. Full information about this update is available here.
A similar update is available for the Verizon (CDMA) iPhone, and its version is 4.2.7. Full information about this update is available here.