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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

945 articles by Dennis Fisher

New Metador APT Discovered Targeting ISPs, Telcos

Researchers have discovered a new APT actor called Metador that has been targeting ISPs, telcos, and universities in the Middle East and Africa.


Decipher Podcast: Asheer Malhotra and Guilherme Venere

Dennis Fisher talks with Asheer Malhotra and Guilherme Venere of Cisco Talos about the group's new research on the Gamaredon APT group, which has been targeting Ukrainian organizations in a new campaign.


Siemens Fixes Numerous Flaws in Wide Range of ICS Products

Siemens has patched dozens of vulnerabilities in several of its ICS products, including Parasolid, RuggedCom ROS, and Simcenter Femap.

Ics, Siemens

Decipher Podcast: Hack-a-Sat 2022

Mark Werremeyer and Bryce Kerley join Dennis Fisher to talk about this year's Hack-a-Sat capture the flag competition, how the challenges have evolved since last year, and how the competition helps players build their hacking skills.


CISA Warns of Critical Flaw in Honeywell SoftMaster PLC Software

A critical vulnerability in the Honeywell SoftMaster PLC controller software can allow an attacker to execute arbitrary code on vulnerable machines.

Ics Security