Alex Stamos, formerly chief security officer at Facebook, formally stepped down in August following earlier rumors of his departure and an internal memo to staff.
In the memo — reported by Buzzfeed news — Stamos said a re-organization of his team left him eyeing a transition:
I initiated the discussion of changing the structure of the InfoSec team just before Thanksgiving 2017. This was due to my concerns that organizational issues impaired our election security work in 2016. While the outcome of this discussion was not one I proposed, at the time I committed myself to making the transition as smooth as possible and trying to set the new teams up for success. I am genuinely proud of the capable, diverse security teams we have built and I truly want my colleagues to continue to be successful in their vital work.
The re-org, did, however, leave me with a challenge, in that it created a big mismatch between the responsibilities I felt carrying the Chief Security Officer title and the potential for big impact I could have from my redefined role. This conundrum was pretty obvious to many, and when people internally asked if I was leaving I rather openly told them that I was committed to staying through August.
Stamos had been at Facebook since 2015. He's now teaching at Stanford University.
"For the last three years, I have been proud to work with some of the most skilled and dedicated security professionals in the world in one of the most difficult threat environments faced by any technology company," Stamos said in a Facebook post confirming his departure.
Also in August, Dan Rose, one of Facebook's earliest executives and VP of partnerships, said he was leaving. Rose joined Facebook in 2006, and is leaving to join his family in Hawaii.
"Over the past 12 years, this company has become my second family. When people ask me why I'm still at Facebook after so long, my answer is always simple — I love the people I work with and I believe deeply in our mission," Rose said in a Facebook post.
"Mark and Sheryl changed my life and my career. I would walk through fire for them, or fly across the ocean on a regular basis. But they deserve someone in my role who is present and fully engaged every day in the many opportunities and challenges that lie ahead," he said.
Earlier this week, Netflix announced it had poached Rachel Whetstone, a top communications executive at Facebook.