Credential Attacks, SharePoint Exploits & AI Risk - Threat Briefing: Mar'26

Credential Abuse, Patch Discipline, and AI Risk

In this month’s Threat Briefing, Nathanael Iversen covers three recent incidents that highlight ongoing challenges in cybersecurity — from credential compromise to unpatched systems and emerging risks tied to AI agents.

Credential Abuse Disrupts Global Operations

An Iranian-linked group, Handala, claimed responsibility for an attack on Stryker, wiping more than 200,000 devices and disrupting operations across multiple countries.
The attackers reportedly leveraged a compromised Microsoft Intune environment to gain global administrative control, with initial access tied to stolen credentials.

SharePoint Vulnerability Now Exploited

A vulnerability in Microsoft SharePoint Server (CVE-2026-20963), disclosed and patched in January, is now being exploited in the wild.
The flaw allows unauthenticated attackers to execute code remotely, reinforcing the importance of timely patching.

AI Agent Misstep Leads to Data Exposure

An internal incident at Meta involved an AI agent autonomously generating and publishing a response that exposed sensitive data to a broader internal audience. The event was classified as a high-severity breach.

Key Takeaways

• Maintain strong credential hygiene and enforce MFA
• Regularly audit administrative privileges
• Apply security patches without delay
• Establish controls around AI agent access and behavior

If you're attending RSA Conference 2026, visit Zentera at Booth 4618 to learn more.