John Shier

Senior security advisor

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

Articles by: John Shier

Ransomware

What IT security teams can learn from the Colonial Pipeline ransomware attack

By John Shier published

In May, news broke of a DarkSide ransomware attack on Colonial Pipeline, a major U.S. fuel pipeline.

Representation of a cyber attacker

Ransomware – a burgeoning geopolitical weapon?

By John Shier published

Today, ransomware is treated mostly as a criminal problem, but there is an argument to be made for treating it as a geopolitical issue too.

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