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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


Defeating Online Scams and Disrupting the Cybercrime Chain With Ariana Mirian

Ariana Mirian, cofounder of startup Beesafe, joins Dennis to talk about the mechanics of online romance and finance scams, how the scammers draw in victims over weeks or months, and why user awareness isn’t the complete solution to the problem.

By Dennis Fisher

April 28, 2026 | 1 min read

AIVideo

The Vercel Intrusion and What is Happening at CISA

This week we dig deep into the Vercel intrusion that emerged last weekend, how it happened, what the response was, and what the downstream effects may be for defenders. Then we talk about CISA’s bizarre delayed response to the Axios npm compromise and what it signals about the agency’s capabilities going forward.

By Dennis Fisher

April 24, 2026 | 1 min read

AIData breach

Cisco CVE-2026-20133 Targeted in Active Attacks

The three newly added bugs are CVE-2026-20122, CVE-2026-20128, and CVE-2026-20133, the last of which had not been identified in active attacks before.

By Dennis Fisher

April 22, 2026 | 2 min read

CiscoVulnerability
white cloud on a blue sky

Vercel Says Internal Systems Hit in Breach

The incident came to light on Sunday and the company says it has brought in an incident response provider to investigate the intrusion. Details of the intrusion are scant at this point.

By Dennis Fisher

April 21, 2026 | 3 min read

AIData breach

Claude Mythos, Automated Bug Hunting, and AI Eating Everything

It’s been A WEEK. Security news never sleeps, and neither does AI, so Dennis and Lindsey dive into all of the storylines coming from the Claude Mythos and Project Glasswing announcements, how organizations will deal with the coming flood of CVEs and patches, NIST’s decision to only enrich specific CVEs going forward, and what could possibly be next on […]

By Dennis Fisher

April 17, 2026 | 1 min read

AIPodcast

New Campaign Targets Mac Users With Novel Malware

The campaign targets high-value individuals and organizations in the cryptocurrency, digital assets, and finance sectors.

By Dennis Fisher

April 16, 2026 | 3 min read

AppleMicrosoft
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