A senior Microsoft programmer for Windows Phone 7 has been fired for tweeting confidential information. Joe Marini, who had been employed by Microsoft since 2003 as principal program manager for the Windows Phone web platform, has been let go due to irresponsible posts on Twitter.

In a post two weeks ago, Marini mentioned an upcoming and as yet announced Nokia phone running Windows Phone 7 OS. He posted, “I just got a chance to try out one of the slickest looking Nokia phones I have ever seen. Soon, you will too!”

However, when asked by a follower how he would rate the phone on a scale of one to 10, he made additional posts. “Overall I would say an 8,” wrote Marini. “Solid feel, good camera, responsive UI, and nice little touches on the body construction.”

The follower then questioned why the phone only received a score of eight, to which Marini replied, “Yeah, the camera was good, but I didn't have optimal lighting. I'd like a larger screen too.” Oops.

Discussing confidential information like unannounced and unreleased products from Microsoft and partner firms is strictly prohibited by Microsoft. A company spokeswoman confirmed that Marini no longer works for Microsoft.

Marini was last seen giving a public talk at Microsoft's BUILD conference in Anaheim. Rumors at Microsoft point to Marini resigning after learning the company would let him go for improper use of social media and disclosing confidential information. The Microsoft spokeswoman would not comment on the specifics of his departure.

The programmer's departure may be part of a full scale attempt by Microsoft to curb leaks. The company recently ousted a journalist from its BUILD conference for breaking an embargo by posting video content about the upcoming Windows 8 operating system prematurely.