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Dennis Fisher

Editor in Chief

Dennis Fisher is an award-winning journalist who has been covering information security and privacy since 2000.

He is one of the co-founders of Threatpost and previously wrote for TechTarget and eWeek, when magazines were still a thing that existed. Dennis enjoys finding the stories behind the headlines and digging into the motivations and thinking of both defenders and attackers. His work has appeared in The Boston Globe, The Improper Bostonian, Harvard Business School’s Working Knowledge, and most of his kids’ English papers.

Featured Articles

695 articles by Dennis Fisher

U.S. Indicts Four Chinese Nationals for Cyberespionage

The U.S. has indicted four Chinese men it alleges were part of APT40 and conducted cyberespionage on behalf of the Chinese government.

China, Ransomware

Chinese Attack Group Exploiting SolarWinds Zero Day

A newly identified attack group from China has been discovered exploiting a zero day in the SolarWinds Serv-U FTP products.


SonicWall Warns of Active Ransomware Campaign Targeting Older Appliances

SonicWall said ransomware actors are targeting a known flaw in firmware running on some of its older security appliances and warned customers to disconnect them immediately.


Biden Says U.S. Will Take ‘Any Necessary Action’ to Defend Against Ransomware

President Biden told Russian President Putin in a phone call tha the U.S. will take "any necessary action" to defend its infrastructure from ransomware and other attacks.

Ransomware, Government

Kaseya Plans to Restart VSA Service Sunday

Kaseya plans to bring its VSA service back online on Sunday afternoon, more than a week after REvil ransomware actors exploited flaws in it.

Ransomware, Kaseya