In 2006, Kramer was selected by Network World magazine as one of 20 luminaries who changed the network industry. Prior to founding Imperva, Kramer co-founded Check Point Software Technologies Ltd. in 1993. At Check Point, he served in various executive roles through 1998 and as a member of the board of directors through 2003. While at Check Point, Kramer played a key role in defining and creating several category-defining products and solutions, including FireWall-1, VPN-1, FloodGate-1, Check Point’s OPSEC alliance, and Check Point’s security appliance program.
He has participated as an early investor and board member in a number of security and enterprise software companies including Palo Alto Networks, Trusteer, Confidela, and Worklight. Kramer received a Masters's degree in Computer Science from Hebrew University of Jerusalem and a Bachelor of Science degree in Mathematics and Computer Science from Tel Aviv University.