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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

871 articles by Dennis Fisher

Bringing Ransomware Infrastructure Into the Light

Researchers from Cisco Talos were able to de-anonymize the infrastructure used by several ransomware groups, including Quantum, Snatch, and DarkAngels.


Remote Memory Corruption Bug Found in OpenSSL 3.0.4

A remotely exploitable memory corruption bug has been identified in OpenSSL 3.0.4 on x64 systems with the AVX512 instruction set.


APT Groups Still Exploiting Log4Shell in VMware Products

APT teams are still exploiting the Log4Shell flaw in VMware Horizon and Unified Access Gateway, six months after the initial disclosure.

Log4j, Cisa

Russian Actors Focus on Confluence Flaw

The majority of exploitation attempts against the recent Atlassian Confluence bug (CVE-2022-36134) are coming from Russia.


New ToddyCat APT Targets Exchange Servers

An APT group dubbed ToddyCat has emerged to target Exchange servers in organizations across Asia and Europe.