John Brennan

Partner at YL Ventures

John Brennan, Partner at YL Ventures, specializes in seed-stage cybersecurity investing. Leveraging a deep focus on cybersecurity and his diverse background in venture capital, he takes a hands-on approach to supporting YL Ventures' portfolio companies, especially those in the earlier stages of growth.

Latest from John Brennan

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Cyber Risk
An Inside Look at How CISOs Prioritize Budgets & Evaluate VendorsAn Inside Look at How CISOs Prioritize Budgets & Evaluate Vendors
byJohn Brennan
Sep 4, 2019
5 Min Read

Editor's Choice

American and Chinese flags on computer keyboard keys
Cyberattacks & Data Breaches
CISA Issues Guidance to Telecom Sector on Salt Typhoon ThreatCISA Issues Guidance to Telecom Sector on Salt Typhoon Threat
byJai Vijayan, Contributing Writer
Dec 4, 2024
4 Min Read
Great Siege Tunnels, Gibraltar, featuring a tableau of seven cannons overlooking Spanish positions
Сloud Security
Russia's 'BlueAlpha' APT Hides in Cloudflare TunnelsRussia's 'BlueAlpha' APT Hides in Cloudflare Tunnels
byTara Seals, Managing Editor, News, Dark Reading
Dec 5, 2024
2 Min Read
Mitel's corporate logo on an office building
Vulnerabilities & Threats
Bypass Bug Revives Critical N-Day in Mitel MiCollabBypass Bug Revives Critical N-Day in Mitel MiCollab
byNate Nelson, Contributing Writer
Dec 5, 2024
4 Min Read
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