Security news that informs and inspires
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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

935 articles by Dennis Fisher

CircleCI Warns Customers to Rotate Secrets After Security Incident

CircelCI said it is investigating a security incident and warned customers to rotate all of the secrets stored in the service.

Supply Chain Security

Fortinet Fixes Serious Flaw in FortiADC

Fortinet has patched a serious bug (CVE-2022-39947) in its FortiADC application delivery controllers.


Deciphering Home Alone

Kevin McCallister may not be a hacker or even own a computer (as far as we know), but no one embodies the hacker ethic better than he does, an eight-year-old boy left alone at Christmas who is forced to use his imagination and creativity to defend a prime target and lure his adversaries into his trap. This is Deciphering Home Alone.

Podcast, Hacker Movies

Play Ransomware Group Using New ProxyNotShell Exploit

Play ransomware actors have been using a previously undocumented exploitation method for the ProxyNotShell Exchange flaws.

Ransomware, Microsoft

Q&A: Andy Greenberg

Andy Greenberg, author and journalist at Wired, recently joined Dennis Fisher on the Decipher podcast to discuss his new book Tracers in the Dark: The Global Hunt for the Crime Lords of Cryptocurrency, which tells the stories of the people who hunted the operators of several major dark web markets.