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Author Bio


Dennis Fisher

Editor

Dennis Fisher is an award-winning journalist and author. He is one of the co-founders of Decipher and Threatpost and has been writing about cybersecurity since 2000. Dennis enjoys finding the stories behind the headlines and digging into the motivations and thinking of both defenders and attackers. He is the author of 2.5 novels and once met Shaq. Contact: dennis at decipher.sc.

dennis@decipher.sc

Featured Articles


The (Bug) Disclosure Day Conundrum and How AI is Changing the Game with Katie Moussouris

Hacker and legendary vulnerability disclosure expert Katie Moussouris of Luta Security joins Dennis to talk about the Fable 5 munitions classification controversy, the recent re-emergence of the disclosure debate, how AI-assisted bug hunting is reshaping the defensive landscape, and what the future holds for attackers and defenders.

By Dennis Fisher

June 29, 2026 | 1 min read

AIVideo

New Turla Stockstay Backdoor Emerges

Known historically for its tight ties to Russia’s FSB and its development of the Snake implant, Turla has leveraged STOCKSTAY to target sensitive government and military organizations.

By Dennis Fisher

June 26, 2026 | 3 min read

MalwareRussia

The Gaslight macOS Backdoor, Cisco Zero Day Exploit, and Operation Endgame

It’s a non-AI podcast! This week we dig into the new Gaslight macOS implant that tries to trick security researchers with some anti-forensics techniques, then we discuss the Operation Endgame takedown of some malware infrastructure, and finally we discuss a Cisco Catalyst SD-WAN bug that was exploited as a zero day. Links Google analysis of […]

By Dennis Fisher

June 26, 2026 | 1 min read

AppleVideo

macOS Gaslight Backdoor Weaponizes Prompt Injection Against Security Analysts

Gaslight is a Rust-based backdoor that researchers from SentinelOne have attributed to DPRK-aligned threat actors.

By Dennis Fisher

June 24, 2026 | 3 min read

AIAppleMalware

FortiBleed Credential Theft Campaign Marches On

The campaign is not the result of a compromise of Fortinet itself, but rather involves the attackers testing a custom list of known passwords for Fortinet devices.

By Dennis Fisher

June 18, 2026 | 2 min read

Fortinet

Mastra AI Hit By npm Compromise

The unknown threat actor gained unauthorized access to legitimate npm accounts, allowing them to inject malicious dependencies into widely used packages.

By Dennis Fisher

June 17, 2026 | 2 min read

AIsupply chain
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