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Author Bio


Lindsey O'Donnell-Welch

Lindsey O’Donnell-Welch is an award-winning journalist who strives to shed light on how security issues impact not only businesses and defenders on the front line, but also the daily lives of consumers.

lindsey@decipher.sc

Featured Articles


intrusion

Healthcare Cybersecurity Has a Problem. This Bill Wants to Fix It

Two years after the largest healthcare cybersecurity incident in history, the senate has passed The Health Care Cybersecurity and Resiliency Act of 2025.

By Lindsey O'Donnell-Welch

October 7, 2026 | 4 min read

Healthcare Security
Fiber optic cables

FBI Warns of FortiBleed Attacks Leading to Lockouts, Ransomware

FortiBleed attacks are continuing, with the FBI and Secret Service warning of compromised Fortinet firewalls, account lockouts and potential ransomware activity.

By Lindsey O'Donnell-Welch

October 6, 2026 | 2 min read

FortiBleed
goanywhere flaw

Cisco Warns of Critical, Exploited Catalyst SD-WAN Manager Flaw

Cisco "strongly recommends" customers apply a patch for a critical API authentication bypass that's being exploited.

By Lindsey O'Donnell-Welch

October 1, 2026 | 2 min read

PatchesVulnerabilities

The Malware That Asks AI What to Do Next | Ryan Fetterman

Ryan Fetterman from Cisco Talos sits down with Decipher’s Lindsey O’Donnell-Welch to talk about ClosedQuorum, the first reported malware binary with an autonomous command-and-control. They talk about the wide range of ways threat actors are using AI, and useful detection strategies for AI-assisted attacks.

By Lindsey O'Donnell-Welch

September 29, 2026 | 1 min read

Video

FBI Hack Fallout, EvilTokens Takedown, and the F5 Zero Day

This week we dig into the ShinyHunters hack of the FBI and what it means not just for the FBI personnel but for the attackers, then we discuss the disruption of the EvilTokens phishing operation by Microsoft, and finally we talk about the F5 BIG-IP zero day and some odds and ends from LabsCon. Note: […]

By Lindsey O'Donnell-Welch

September 29, 2026 | 1 min read

Video

Researchers Find Windows Malware With Autonomous C2 Functionality

Cisco Talos researchers identified ClosedQuorum, a Windows implant that uses multiple LLMs to autonomously select attack actions. The catch: there's no confirmation that it’s actually been deployed in the wild.

By Lindsey O'Donnell-Welch

September 22, 2026 | 3 min read

AIMalware
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