Mozilla security chief Window Snyder is leaving the open-source group.
Snyder, who joined Mozilla after stints at Microsoft and Matasano Security, announced her exit on the Mozilla security blog today.
I will be leaving Mozilla at the end of the year. I am sad to be leaving, but I am excited to go work on something I have always been passionate about. I wish I could tell you about it now, but that will have to wait for a while.
She said Mozilla security response issues will be handled by Johnathan Nightingale, Lucas Adamski, Brandon Sterne and Mike Shaver in the interim.
Snyder's exit comes at a crucial time for Mozilla, which is locked in a competitive battle for Web browser market share. At Mozilla, Snyder helped put a public face on the company's security response efforts and took the lead on several important initiatives that're being shared with the wider community. These include projects around threat modeling, training and vulnerability metrics.
Snyder is passionate about threat modeling, having co-written a book on the subject with Frank Swiderski so it's possible she is going back into the secure software development world.
Or, maybe, Washington? Snyder was a vocal supporter and campaigner for President-Elect Barack Obama.
UPDATE: Dennis Fisher reports that Snyder is leaving to help fund a start-up unrelated to security.