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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

740 articles by Dennis Fisher

APT Group Exploiting Zero Day in FatPipe Software

The FBI is warning about an APT actor that is exploiting a zero day flaw in the FatPipe software on several products, including MPVPN, WARP, and IPVPN.


CISA Warns Iranian APT Targeting US Infrastructure

CISA warned that an unnamed APT group associated with the Iranian government i exploiting known Fortinet and the Exchange ProxyShell bug to gain access to target networks.

Cisa, Iran

Decipher Podcast: Nick Selby

Nick Selby joins Dennis Fisher to talk about his long and varied career in security, the challenges that law enforcement faces in investigating cybercrime, and what the future may hold for enterprise security teams.


‘We Have to Change the Decision Calculus’ to Stop Ransomware

Ransomware groups such as REvil have take some hits recently, but the broader landscape has continued to expand and experts say defenders need to change their thinking in order to address the problem.

Ransomware, Governance, Cisa

CISA Warns of Serious Flaws in Many DDS Implementations

CISA is warning ICS operators of a number of vulnerabilities in some open-source and proprietary data distribution service implementations that can lead to remote code execution.

Ics Security