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All things Duo from our press room, blog and around the Web

Press Release
February 12th, 2015

Duo Security Names Zack Urlocker Chief Operating Officer

Company Triples Revenue in 2014; Executive Team Expands to Tap High-Growth Management

Duo Security, a leading authentication solutions provider, today announced the appointment of Zack Urlocker as Chief Operating Officer (COO). Urlocker will lead product, marketing, sales, and customer success to help Duo Security accelerate its rapid growth.

In his previous role as COO at Zendesk, Urlocker launched the company’s enterprise strategy and hired key sales and marketing executives, growing revenue by approximately 10x prior to its IPO in 2014. Urlocker has held senior executive positions at high-growth companies like Zendesk and MySQL, helping them achieve billion dollar valuations by disrupting mature technology markets like help desk software and database software.

“As a long-time advisor to Duo, Zack has already made an impact in our company and we’re thrilled to bring him into a full-time role,” said Dug Song, CEO of Duo Security. “Zack will play a leadership role in accelerating our growth and expansion this year in the U.S. and internationally.”

Urlocker is a 25-year veteran of the technology industry. He has served as COO at Zendesk, EVP at MySQL in charge of marketing and engineering, vice president at Sun Microsystems, and vice president of marketing at webMethods. Urlocker has served on the boards of several venture-backed startup companies, including Revolution Analytics (acquired by Microsoft) and Pentaho. He holds a BS in Computer Science from Concordia University and an M Math and Computer Science from University of Waterloo.

About Duo Security
Duo Security provides cloud-based two-factor authentication to thousands of organizations worldwide, including Facebook, Etsy, Random House, Paramount Pictures, Box, Toyota, Yelp, and Threadless. In as little as fifteen minutes, Duo Security’s innovative and easy-to-use technology can be deployed to protect users, data, and applications from breaches, credential theft and account takeover. Try it for free at

Sally Lanier, PR Manager
Duo Security