[8] Kramer, who has been called "the godfather of Israeli cybersecurity," is a serial high-tech investor and entrepreneur with "a long track record of success".
[10] In 1993, he co-founded Check Point Software along with Gil Shwed and Marius Nacht;[11] the company introduced the first firewall to the commercial market[12] and went on to become "a world leader in protecting the information that flows round the Internet, and a flagship of Israel's high-tech industry".
[15][16] Imperva moved away from perimeter defenses such as firewalls and instead deployed its software to protect against hackers and business-data theft by identifying and preventing attacks before they find their way to the inside of an organization.
[17] The company's initial public offering on the New York Stock Exchange raised $90 million, with its shares gaining 33% on its first day of trading on 9 November 2011.
[20] Kramer's belief in the cloud as the next big development in cybersecurity[17] led him to establish Cato Networks in 2015, together with former Imperva colleague Gur Shatz.