Meet The Team - Warren Mercer, Founder

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Meet The Team - Warren Mercer, Founder & CEO

Warren Mercer is the founder and CEO of HYDN. Having worked in cybersecurity for over 15 years, find out why he decided to make the move over to blockchain security.


Warren is a world-renowned cybersecurity and blockchain expert with over 15 years of industry experience. Warren has previously held senior roles at the likes of NYSE, Cisco, BT, and Alert Logic.

As part of his work within the cybersecurity industry, Warren has been a keynote speaker, presenter, and guest speaker at conferences worldwide including Microsoft DCC, NorthSec, Kaspersky SAS, VB, and many more, discussing topics ranging from Malware Attacks to Bitcoin.

Check out Warren discussing DNS attacks at NorthSec 2019 in Montreal below.

Getting into Cybersecurity

Warren started his career as a service desk engineer, working on password directs and internet proxies. From there he began to specialize in networking technology and firewalls, which led him to be fascinated by threat intelligence.

This led him to a role at the New York Stock Exchange (NYSE) where he focused on threat vulnerability, placement of sensors, and working out ways to protect the perimeter. He was tasked with identifying what an attacker might think and what they would target to inflict maximum damage.

After leaving NYSE, he moved on to working at Cisco Talos where his focus was security research and threat intelligence.

Security Research and Threat Intelligence Work

Having spent most of his career focusing on security research and threat intelligence, Warren usually finds himself in the deep, dark and dirty areas of the internet and enjoys the thrill of the chase when it comes to tracking down new malware and the bad guys!

As part of Warren’s work in security research and threat intelligence, he has uncovered many of the world’s biggest hacks including the Olympic Destroyer in 2018. The malware attack at the 2018 Winter Olympics opening ceremony caused chaos as it shut down every domain controller in the Seoul data centres, the servers that formed the backbone of the Olympics’ IT infrastructure. This led to ticketing systems, television screens, messaging systems, and more going offline.

Warren was part of the Cisco Talos team that helped uncover the attack and he will be discussing his role in this as part of an upcoming BBC Podcast Series.

Warren also featured in the hugely popular, Tomorrow Unlocked, documentary series about the Olympic Destroyer which can be viewed below.

Moving from Web2 to Web3

Warren has been an active member of the blockchain community for a number of years, being one of the early adopters and advocates of the technology. He gave a number of talks on Bitcoin and the potential for blockchain technology whilst working for Cisco Talos.

HYDN started life as a Web3 cybersecurity firm founded by Warren in 2021, with the company initially operating as a hidden entity before becoming public facing in 2022.

Warren built the HYDN team from the ground up, drawing upon his industry contacts to hire the best and brightest talent in the sector, with the aim of bringing top-tier cybersecurity expertise to the Web3 world.

Initially focusing on smart contract audits and Web3 security, Warren quickly found that many projects required further business and marketing support beyond security audits.

To provide a solution to this, Warren expanded the team, hiring experienced go-to-market consultants, tokenomics experts, and branding and marketing partners to ensure that HYDN can provide full 360 support to our clients across a range of vectors.

HYDN currently operates as a Web3 Security and Consultancy firm offering a range of services including:

Get In Touch

If you’d like to contact Warren to chat with him about cybersecurity, crypto, smart contract audits, or anything else he’d love to connect on Twitter or Telegram.