
Chester Wisniewski
Chester Wisniewski is Director, Global Field CTO at next-generation security leader Sophos. With more than 25 years of security experience, his interest in security and privacy first peaked while learning to hack from bulletin board text files in the 1980s, and has since been a lifelong pursuit.
Chester works with Sophos X-Ops researchers around the world to understand the latest trends, research and criminal behaviors. This perspective helps advance the industry's understanding of evolving threats, attacker behaviors and effective security defenses. Having worked in product management and sales engineering roles earlier in his career, this knowledge enables him to help organizations design enterprise-scale defense strategies and consult on security planning with some of the largest global brands.
Based in Vancouver, Chester regularly speaks at industry events, including RSA Conference, Virus Bulletin, Security BSides (Vancouver, London, Wales, Perth, Austin, Detroit, Los Angeles, Boston, and Calgary) and others. He’s widely recognized as one of the industry’s top security researchers and is regularly consulted by press, appearing on BBC News, ABC, NBC, Bloomberg, Washington Post, CBC, NPR, and more.
When not busy fighting cybercrime, Chester spends his free time cooking, cycling, and mentoring new entrants to the security field through his volunteer work with InfoSec BC. Chester is available on Mastodon (securitycafe.ca/@chetwisniewski).
For press inquiries, email chesterw [AT] sophos [.] com.
Contenu par Chester Wisniewski

Security Operations
Active Adversary
Active Adversary Report : la sécurité en chiffres
February 24, 2026
Threat Research
L’avenir du MFA est clair, mais est-ce déjà une réalité ?
March 26, 2025

Threat Research
Les défenseurs se regroupent : il est temps de passer à l’action contre les ransomwares
May 29, 2024
Threat Research
“Cybercrime on Main Street” : le rapport Sophos 2024 sur les menaces
March 27, 2024
Threat Research
LockBit : les leçons à tirer pour gagner le combat contre la cybercriminalité
March 8, 2024
Products & Services
10 conseils pour protéger votre vie privée et renforcer votre sécurité lors de vos achats en ligne
November 24, 2023
Threat Research
Présentation de la méthode des TAC (Threat Activity Clusters)
August 23, 2023
Threat Research
Cyberseriousness Quotient (CQ) : la qualité, le respect, l’intégrité et l’utilité au service de la cybersécurité
July 11, 2023

Threat Research
Cybersécurité de vos employés : où qu’ils se trouvent, ils doivent être protégés
May 30, 2023