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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

1180 articles by Dennis Fisher

Ransomware Actors Leaning on DNS Tunneling

Ransomware groups are using DNS tunneling more and more as a way to exfiltrate data and send commands to infected machines.

DNS, Ransomware

Hydra Market Takedown Has Had Lasting Effects

The takedown of the infamous Hydra market has had lasting effects on the cybercrime underground and cryptocurrency laundering ecosystem.

Rsa2022, Cryptocurrency

Russian Government, Cybercriminal Cooperation a ‘Force Multiplier’

The Russian government's tolerance and sometime cooperation with the cybercriime groups in the country makes the threat from both factions even more serious, US officials say.

Russia, Rsa2022

Zero Day in Atlassian Confluence Under Attack

A newly disclosed zero day in some versions of Atlassian Confluence and Data Center is under attack and being used to install webshells on target servers.

Atlassian

CISA Warns of Karakurt Extortion Group

The Karakurt data extortion group is stealing sensitive information from enterprises and holding it for ransom, CISA warns.

Ransomware, CISA