Cyber security savant Dug Song sold his company, Duo Security, to Cisco for $2.35 billion in 2018.

He co-founded Duo Security in 2010 with Jon Oberheide, and over the years, the two men built it into a cyber security empire specializing in multi-factor authentication.

Throughout his career, Dug has made a point to champion for the customer and has a no-compromise attitude when it comes to exceptional product quality.

Those traits continue to serve him well in his new role as vice president and general manager for Cisco.

Needless to say, Dug stands out as a unicorn businessman -- and I've been paying attention to his career moves.

Discover 10 fascinating and inspiring facts about entrepreneur Dug Song!

1. The Cisco Acquisition Allowed Duo's Technology to Reach More People Than Ever

In an interview with Xconomy, Dug revealed he and Oberheide weren't necessarily interested in selling Duo Security when Cisco approached them, but the scale of Cisco -- and the potential growth that offered -- appealed to him.

"We had 12,000 customers, and they had 800,000 ... They built a lot of the Internet's physical infrastructure and saw an opportunity to extend security where attackers are going after people beyond the bounds of the network," said Dug.

2. Cisco's Culture and Values Appealed to Dug

In an interview with Detroit Business, Dug said that Cisco's emphasis on inclusion and diversity appealed to him, as did their commitment to doing business in Ann Arbor, Michigan.

Duo Security was headquartered in Ann Arbor, and Cisco agreed to continue their business in Ann Arbor and, in fact, "double down ... in their Michigan footprint."

3. He's Partnered with World's Top brands

Duo Security has partnered with some of the top brands in the world to provide unparalleled security, including: Facebook, Zillow, Yelp, Etsy, Berkeley University of California, National Institutes of Health and Kayak.

4. Dug Founded the Tech Brewery in 2009

Dug founded a popular coworking space in the heart of Ann Arbor: Tech Brewery.

Tech Brewery's peer community fosters collaboration and communication and caters to technologists, entrepreneurs and startup companies.

Notably, the Tech Brewery is housed in an actual brewery from the 1880s.

5. He's Also the Founder of A2Geeks

Non-profit A2Geeks is a startup community founded by Dug in 2008.

The goal of A2Geeks is to "to enable, support and foster technology, entrepreneurship, culture and community" and enrich Ann Arbor for creative and innovative individuals.

Among other things, A2Geeks hosts regular meetups and large scale events to bring innovators together and create change.

6. He was a Member of a "Billion Dollar Hacker Club"

Earlier in his career, Dug was a member of W00W00 -- a powerful cyber secuity think tank group dubbed the "billion dollar hacker club" by Tech Crunch. 

In addition to Dug, members included the founder of Napster and WhatsApp. 

7. Song Holds Two Patents

Song is the author of not one, but two patents: one relates to a system for managing computer networks and the other is a system for reducing the scope of self-propagating attack code in a network.

8. Dug Song Loves to Skateboard

He is an avid skateboarder, and regularly posts videos of his skateboarding adventures on social media.

Speaking of skateboarding, Song donated $25,000 to build a massive public skate park in Ann Arbor, Michigan and was a cofounder of the Ann Arbor Skatepark Action Committee.

9. He's a University of Michigan Alum

Song holds a bachelor's degree in computer science and liberal arts from the University of Michigan.

During his tenure there, he worked for the university as a systems research programmer and security administrator.

10. He has Strong Ties to Ann Arbor

Dug lives in Ann Arbor, where he lives with his wife and children.

He is a trustee of the Ann Arbor Summer Festival, and his wife Linh Song is the executive director of the Ann Arbor Public Schools Educational Foundation.