John Shier is a senior security advisor at Sophos. With more than two decades of cybersecurity experience, John is passionate about protecting consumers and organizations from advanced threats. He’s researched everything from costly ransomware to illicit dark web activity, uncovering insights needed to strengthen proactive cybersecurity defenses.

John is often consulted by press, and has been quoted in publications like Reuters, WIRED, Fortune, CNN, The Hill, Fast Co, Yahoo, and more. He’s also a frequent speaker at industry events like RSA Conference, Infosec, Cebit, Gitex, and more.

Based in Toronto, John is available on Twitter (@john_shier) and can be reached via email at John.Shier@sophos.com.