Billionaire Profile
Nir Zuk
Global Rank
#2110

Image: Public domain | via Wikimedia Commons

Nir Zuk

CEO, Palo Alto Networks
US
Real-Time Net Worth
$1.7B
As of December 2025
Age
54
Source
Software
Industry
technology
Citizenship
US

Biography

Nir Zuk is a prominent figure in the technology industry, best known for founding Palo Alto Networks, a leading cybersecurity firm. His net worth is estimated at $1.7 billion, reflecting his success in the software sector. Zuk, a 54-year-old entrepreneur, is a US citizen and currently serves as the Chief Technology Officer of Palo Alto Networks. His career began with early work in computer programming and cybersecurity, leading to the development of the "next-generation firewall" and significant achievements in network security. Zuk's career highlights his commitment to innovation and his influence on the cybersecurity landscape.

Wealth Over Time

In-Depth Profile

Early Life

Nir Zuk was born and raised in Rehovot, Israel. He developed an early interest in computers and programming. Zuk started learning computer programming by reading books and was capable enough to write small codes, only in a year. He began writing commercial programs when he was sixteen, earning money from them. Zuk's interest in computers grew, and he was among the first to write early virus programs.

Rise to Success

Zuk's career in cybersecurity began in the Israeli military, where he worked in the IT department. He was recruited by Checkpoint in 1994, where he became part of a team that invented the "stateful inspection" technology, a foundational element of network security. In 1997, Zuk moved to the US to work at Checkpoint's U.S. headquarters. He founded OneSecure, the first intrusion prevention system, which was later acquired by NetScreen, then Juniper Networks. In 2005, Zuk founded Palo Alto Networks with 25 colleagues. The company released its first product in 2007, the world's first "next-generation firewall". Under his leadership, Palo Alto Networks has developed advanced firewalls, serving over 70,000 organizations globally, including many Fortune 500 companies.

Key Business Strategies

Zuk's strategy included anticipating the growing need for network security due to increasing application complexity and network consumption. Another key strategy was the early recognition of the importance of software-defined networking. Palo Alto Networks developed a platform including advanced firewalls and cloud-based offerings to extend firewalls to cover other aspects of security.

Philanthropy

While specific philanthropy amounts are not readily available in the provided search results, it is known that Zuk founded the Cyber Threat Alliance. Palo Alto Networks has also founded cybersecurity training facilities around the world.

Career Milestones

1994

Checkpoint

Joined Checkpoint and helped build its flagship product, Firewall-1.

1999

Founded OneSecure

Founded the first intrusion prevention system, that sat behind the firewall.

2002

OneSecure Acquired

Sold OneSecure to Netscreen for $45 million.

2004

CTO at Juniper Networks

Became Juniper's CTO at age 33.

2005

Founded Palo Alto Networks

Founded Palo Alto Networks.

Philanthropy & Social Impact

Cybersecurity

Cyber Threat Alliance

Not Available

Founded the Cyber Threat Alliance.

Business Philosophy & Leadership

Notable Quotes

"“Just for fun,” he insists."

"“They don't like me,” says Nir Zuk of his old bosses."

Leadership Principles

Sharing Wealth

Zuk believes in sharing the wealth with employees, ensuring they have a healthy stake in the company from the beginning.

Focus on Innovation

Zuk emphasizes the importance of innovation and avoiding bureaucracy to prevent the company from becoming sluggish.