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

1178 articles by Dennis Fisher

Microsoft Releases One-Click Mitigation for Exchange Flaw

Microsoft has published a new tool that installs a mitigation for the CVE-2021-26855 Exchange ProxyLogon flaw.

Microsoft

Number of Exchange Servers Vulnerable to ProxyLogon Declines

The number of Exchange servers vulnerable to the ProxyLogon flaws is continuing to drop, but there are still more than 60,000 online.

Microsoft

DearCry Ransomware Hitting Exchange Servers

Attackers are installing the DearCry ransomware on some vulnerable Exchange servers.

Ransomware, Microsoft

Decipher Podcast: Joe Slowik

Joe Slowik, senior security researcher at Domaintools, joins Dennis Fisher to discuss the Exchange vulnerabilities, the exploitation activity timeline, and the question of attribution.

Podcast

Four Critical Flaws Hit F5 BIG-IP Boxes

F5 has patched four critical flaws in its BIG-IP appliances, all of which can lead to remote code execution.

F5, Networking