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Every story since Decipher went independent.

188
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OCT 27
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Intrusions

Hive, Nefilim Ransomware Affiliate Sentenced to 70 Months in Jail

A 36-year-old Ukrainian national who acted as a Nefilim and Hive ransomware affiliate and targeted hospitals and government entities has been sentenced to 70 months in prison.

LINDSEY O'DONNELL-WELCH · OCT 27 · 2 min
Intrusions

Ongoing Microsoft 365 Campaign Abuses ConnectWise App

Threat actors have compromised a credential within the vendor’s infrastructure, allowing them to abuse a client assertion that bypasses traditional user authentication.

Dennis Fisher · 3 min
Intrusions

The Odyssey and Infosec: How We Got From Zeus’s Law to Zero Trust

Nolan casts the invention of the Trojan horse as the ultimate violation of “Zeus’s law,” the idea that you should treat any stranger you encounter with kindness and respect, because they could very well be Zeus in disguise.

Susannah Clark Matt · 5 min
Vulnerabilities

Ivanti Connect Secure Zero-Day Exploited in Attacks

Ivanti warns of active exploitation of CVE-2026-104935, a high-severity Connect Secure flaw.

Lindsey O'Donnell-Welch · 2 min
Intrusions

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.

Lindsey O'Donnell-Welch · 4 min
AI

Patching Faster Has Never Been the Answer

Patching is a necessary evil and doing it manually in any decent sized organization was essentially impossible in the pre-AI times and is now pure folly.

Dennis Fisher · 3 min
Intrusions

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.

Lindsey O'Donnell-Welch · 2 min
AI

AI May Be the Future, But Talent is What Builds Security

While AI is reshaping the threat landscape, the people defending against those threats remain vital.

Dennis Fisher · 3 min

Catch Me If You Can is the Social Engineeer’s Playbook

The reality is that a lot of what hackers actually do is just social engineering in one form or another.

Dennis Fisher · 1 min
Vulnerabilities

New Citrix NetScaler Issue Emerges

The vendor says this is a configuration-dependent issue rather than a failure of the security patches themselves.

Dennis Fisher · 3 min
Vulnerabilities

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.

Lindsey O'Donnell-Welch · 1 min
Intrusions

Inside the Citrix NetScaler Zero Day Saga

This case is yet another reminder just how important vendor communication is in such incidents and how much uncertainty can hamper security.

Dennis Fisher · 1 min
Vulnerabilities

Researchers Warn of Citrix NetScaler Exploitation

On Saturday, researchers from watchTowr Labs said they had credible information that attackers were exploiting an unknown RCE vulnerability in Citrix NetScaler boxes.

Dennis Fisher · 3 min
Vulnerabilities

F5 CVE-2026-94127 Targeted in Active Attacks

This vulnerability allows for unauthenticated remote code execution and shows how a missing bounds check—a classic programming error.

Dennis Fisher · 2 min
AI

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.

Lindsey O'Donnell-Welch · 3 min
Intrusions

Fake LastPass Authenticator Pages Deliver Rapuncel Infostealer

Attackers impersonated LastPass Authenticator on fake GitHub pages to deliver the Rapuncel infostealer in a campaign involving 40 fake brands.

Lindsey O'Donnell-Welch · 2 min
AI

‘We Have Enough AI’: Realism in a Time of Relentless Hype

Let’s ask a simple question that seems to be getting lost in all of the credulous fervor around AI: How’s this working out for everyone?

Dennis Fisher · 3 min

New SparroWocky Backdoor Targets Latin America

Active since at least August 2025, the malware represents a functional pivot from the threat actor’s existing SparrowDoor backdoor.

Dennis Fisher · 3 min

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