Cato Networks was founded in 2015 in Tel Aviv, Israel, by
Shlomo Kramer, co-founder of
Checkpoint and
Imperva, and Gur Shatz, a co-founder of networking company
Incapsula. Cato was initially funded with a $20 million Series A from
U.S. Venture Partners and Aspect Ventures. Kramer became CEO, and Shatz became president and COO. Its first products were designed to protect customers'
wide area network (WAN) connections and mobile devices with next-generation firewalling, URL filtering, application control, VPN access, and more services. In 2019, the company secured a $55 million Series C funding round. In April 2020, the company raised $77 million in a Series D. The investment reportedly valued the company at over $1 billion, making it a tech unicorn. In October, the company announced it had raised $200 million at a $2.5 billion valuation. In September 2025, Cato Networks announced its first-ever
M&A deal with the acquisition of Aim Security, an AI security startup based in Israel, in order to expand into the rapidly growing AI security segment. Included in this announcement were two other recent developments: that it had crossed the $300 million
Annual Recurring Revenue (ARR) threshold; and that it had raised another $50 million in its Series G round, bringing the total to $409 million at an estimated valuation of over $4.8 billion. ==Products==