John Jack

Board Partner

2012 - Current

Andreessen Horowitz is a venture capital firm that provides seed, venture and growth-stage funding to the best new technology companies.

Principal

2012

Start-Up Consultant and Board Member to venture-backed companies.

CEO Partner

2019

Harmonic combines an established, successful investment team with proven, world class tech operators to invest in market leading growth companies and deliver unparalleled support and guidance toward their success.

Venture Partner

2022

We invest in company founders building frontier technologies that matter

Member, Board of Directors

2013

Traditional Security Doesn't Stop Lateral Threats. Illumio's Adaptive Segmentation Does

Member, Board of Directors

2015

Contrast Enterprise knows where apps are weak and can instantly deploy adaptive defenses to protect an organization's entire application portfolio. Contrast is the first application security product to integrate defenses across development and operations, unifying vulnerability assessment, security visibility and attack protection throughout the application lifecycle.

Member, Board of Directors

2022

The Extended Enterprise is full of hidden risks – Aravo for Third-Party Management makes them visible, measurable, and manageable.

Member, Board of Directors

2012 - 2021

CipherCloud is committed to building trust in the cloud. Our revolutionary cloud encryption gateway technology is enabling organizations worldwide to enjoy the benefits of the cloud that otherwise wouldn't be able to due to concerns about data security, privacy, residency, and regulatory compliance. Acquired by Lookout March 2021

Member, Board of Directors

2017 - 2020

Respond acquired by Fireye November 2020.

Founder and Co-CEO

2016 - 2019