THE EXPERT
Meet Joe Sullivan
Who is Joe?
What is Joe Sullivan Security?
Joe Sullivan Bio & Headshot
Joe's Social Media Posts
TECHNOLOGY CONSULTING
From Joe's Point of View
I started Joe Sullivan Security with friends as a passion project. Our boutique consulting firm helps companies use digital transformation to create meaningful impact. We also explore emerging technologies and invest time in causes like delivering laptops to children in war zones.

We’re sought after for our unique blend of expertise, real-world execution, and the ability to move with startup agility while maintaining public company discipline. I’ve led security at eBay, PayPal, Facebook, Uber, and Cloudflare, and advised companies like Airbnb and DoorDash. I’ve testified before Congress and served on President Obama’s Commission on Enhancing National Cybersecurity.

The Uber Case: What I Learned and Why It Matters
KNOWLEDGE LANDSCAPE
Core Areas of Expertise
Executive Mentorship
Go-to-Market Advisory for Founders
Trust & Safety
Privacy
Legal & Compliance
Technology for Good
Government/Federal Work
Robotics & AI
Cybersecurity
Executive Mentorship
Go-to-Market Advisory for Founders
Trust & Safety
Privacy
Legal & Compliance
Technology for Good
Government/Federal Work
Robotics & AI
Cybersecurity
Executive Mentorship
Go-to-Market Advisory for Founders
Trust & Safety
Privacy
Legal & Compliance
Technology for Good
Government/Federal Work
Robotics & AI
Cybersecurity
Executive Mentorship
Go-to-Market Advisory for Founders
Trust & Safety
Privacy
Legal & Compliance
Technology for Good
Government/Federal Work
Robotics & AI
Cybersecurity
Awards & Recognition
Appointment to the Commission on Enhancing National Cybersecurity
appointment-to-the-commission-on-enhancing-national-cybersecurity
Letter from the White House
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Award for Superior Performance
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Recognition from the Secret Service
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Recognition from the Secret Service
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Certificate of Recognition from the FBI
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Recognition from the DEA
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Congressional Recognition
congressional-recognition
Appointment to the Commission on Enhancing National Cybersecurity
appointment-to-the-commission-on-enhancing-national-cybersecurity
Letter from the White House
letter-from-the-white-house
Award for Superior Performance
award-for-superior-performance
Recognition from the Secret Service
recognition-from-the-secret-service
Recognition from the Secret Service
recognition-from-the-secret-service-2
Certificate of Recognition from the FBI
certificate-of-recognition-from-the-fbi
Recognition from the DEA
recognition-from-the-dea
Congressional Recognition
congressional-recognition
CAREER TIMELINE
Joe's Journey of Expertise
At the intersection of government, technology, and security, Joe is able to provide direct expertise on how the online world can be safer for everyone.
Joe Sullivan Security LLC
2023 - Present
After the Uber case concluded in May 2023, Joe Sullivan returned to what drives him most—supporting leaders in security. He launched Joe Sullivan Security to advise startups on product and go-to-market strategy, mentor executives through high-pressure challenges, and help organizations build high-performing, values-driven security teams. Today, Joe Sullivan Security works with companies of all sizes to make security a source of trust, resilience, and lasting business impact.
Ukraine Friends
2023 - Present
While working as CSO at Cloudflare, Joe Sullivan was asked by the U.S. government to assist Ukraine in preparing for cyberattacks in early 2022. The experience left a lasting impact. After leaving Cloudflare, Joe looked for a way to continue contributing. He didn’t expect to become a nonprofit CEO—but after meeting the founders of Ukraine Friends, he was moved to join their mission.

Today, the organization focuses on helping children in war-torn regions stay connected to education and protect their mental health by providing lightly used laptops from the US and European companies directly to the children who lost one or both parents as a result of the war to support their remote education.
Cloudflare
2018 - 2022
In May 2018, Joe Sullivan joined Cloudflare as the company’s first Chief Security Officer. He build the security team at Cloudflare from just a few engineers into a large, high-performing organization. Joe played a key role in helping the company grow from a startup into a major publicly traded player in the internet infrastructure space.
Uber
2015 - 2017
In spring 2015, Joe Sullivan was recruited to join Uber as its first Chief Security Officer. He focused on protecting riders and drivers from real-world threats as technology transformed the visibility and risks of shared transportation. He also oversaw physical security, information security, and fraud prevention, growing the team from a few engineers to hundreds. When the CEO stepped down in 2017, Joe was part of the interim leadership group that helped steer the company until new leadership was in place. His time at Uber—both the accomplishments and the challenges—has been widely documented, including a dedicated chapter in the bestselling book Super Pumped.
Facebook (now Meta)
2008 - 2015
Joe Sullivan joined a then-small Facebook, drawn to the unique challenges of a rapidly growing platform. He soon became Chief Security Officer, shifting fully from law to operations. Joe built the security team from a handful to hundreds and led efforts on platform safety, including child protection, account security during the Arab Spring, and testified before Congress on online safety and bullying prevention. He was also invited to the first White House Conference on Bullying Prevention in 2011. His work helped define how major platforms respond to global threats and protect their most vulnerable users.
eBay & PayPal
2002 - 2008
In 2002, Joe Sullivan was recruited to eBay during a pivotal time as the company faced the challenge of being the first major global e-commerce platform. He served as Senior Director for Trust and Safety, overseeing fraud investigations, acceptable use policies, and a legal team tackling regulatory issues that existing laws hadn’t anticipated.



After four years combating e-commerce fraud and cybercrime, Joe transitioned to PayPal to lead the North America Legal Team and briefly served as acting General Counsel. Even in a legal role, he remained closely involved with security efforts—most notably helping launch one of the first responsible disclosure programs with PayPal’s infosec team, laying the groundwork for modern bug bounty practices.
US Department of Justice
1993 - 2002
Joe Sullivan spent the first eight years of his career as an attorney with the U.S. Department of Justice, where he eventually specialized in technology-related crimes. In 1997, he received technical training and joined the DOJ’s Computer and Telecommunications Crime Coordinator program, earning national recognition for his work on groundbreaking cybercrime cases—including digital support during the 9/11 investigation.



Though he left government service in 2002, Joe has remained deeply involved in public safety efforts. He has testified before Congress on internet safety, served on the National Action Alliance for Suicide Prevention, and was appointed by President Obama to the Commission on Enhancing National Cybersecurity. He has advised the Department of Homeland Security and spoken at leading safety conferences nationwide.