May 20, 2011 12:58 GMT  ·  By

In early May, Redmond-based software giant Microsoft announced the availability of a new software update for devices running under its Windows Phone platform, aimed mainly at enhancing the security of these handsets.

The said software, called the “7392” or May update, has already been delivered to HTC HD7 devices on T-Mobile's network in the United States.

The new update arrives on mobile phones after the NoDo update, and brings the OS version up to 7392, hence its name.

On some devices, it would arrive along with the NoDo update, or the copy&paste software, which was released in March, while on others, such as HD7, arrives as a standalone firmware.

Owners of the HTC HD7 smartphone on T-Mobile's network started to receive the update days ago, and the process is reportedly running smoothly.

The update should also be delivered to newer devices, such as the HTC Arrive, which landed on shelves with NoDo right from the start, although no specific release date for it was announced until now.

According to some of the latest news on the matter, Sprint's Windows Phone users should start seeing the update emerging on their devices as soon as May 24th is here, next week.

The update comes with a security patch for a series of compromised third-party digital certificates, as previously explained. The release notes for the software would include the following:

Fix for fraudulent third-party digital certificates. This update includes a critical fix to an industry-wide issue with nine untrusted digital certificates that were issued by one root certificate authority. These third-party digital certificates are used to access popular websites and email portals.

Although this is not a Microsoft security vulnerability, these untrusted certificates may be used to spoof content, perform phishing attacks, or perform man-in-the-middle attacks against all web browser users. The update is mainly aimed at the IE browser on Windows Phone devices, ans should be followed by another major software revamp in fall, called Mango, though chances are that Microsoft would deliver other updates too in the meantime, provided that they are needed.