Security | Threat Detection | Cyberattacks | DevSecOps | Compliance

Hunting Our Own Vulnerabilities First: Tanium's Frontier AI Security Commitment

Tanium’s customers span critical infrastructure sectors, including some of the largest banks, hospital systems, and government agencies in the world. They trust our agent on their most sensitive endpoints, which means that the software we ship must meet the high standards they set for themselves. That’s why we hunt our own vulnerabilities before anyone else can.

Hunt or be Hunted: ShieldBreak Zero-Day

On August 11, 2026, a security researcher publicly released a proof-of-concept called ShieldBreak, a full bypass of Microsoft’s own July patch (RoguePlanet) for a Windows Defender privilege-escalation flaw, with a reported 100% success rate against Windows 11 25H2 and Windows Server 2025. No vendor fix existed for the bypass. The only real defense was whoever moved first.

Critical macOS Screen Sharing Authentication Bypass - Under Active Exploitation (CVE-2026-65400)

On August 6, 2026, Apple shipped an emergency, out-of-band fix for CVE-2026-65400, an authentication issue in screensharingd, the daemon behind Screen Sharing, macOS's built-in remote desktop service that listens on TCP port 5900. Apple's advisory describes an attacker who could reach the service over the network and authenticate without valid credentials, then read and write files as root—enough to achieve full remote code execution.

Slash Commands Bring Expert SecOps Workflows to Atlas

Security teams don't have a shortage of data. They have a shortage of time, repeatability, and senior expertise available at the exact moment an analyst needs it. That's the problem Atlas slash commands are designed to solve. With /hunt, /investigate, and /signal, Atlas turns a simple chat interaction into a guided SecOps workflow grounded in live endpoint state.

ShieldBreak: The Windows Defender 0-Day with No Patch - And What to Do About It.

In mid-June 2026, Microsoft acknowledged RoguePlanet, a privilege-escalation flaw in the Microsoft Malware Protection Engine (mpengine.dll), the scanning engine behind Windows Defender. Microsoft rated it "Exploitation More Likely" on its Exploitability Index and assigned a CVSS score of 7.8. Microsoft shipped a fix in Malware Protection Engine version 1.1.26060.3008 during its July 2026 patch cycle.

AI Is Accelerating Vulnerability Discovery. Tanium Helps You Keep Up.

Following the Mythos announcement in April 2026, organizations using AI to identify software vulnerabilities have contributed to a significant rise in newly discovered CVEs and CVE definitions. This shift reflects a broader trend across the industry: AI is helping uncover vulnerabilities faster than ever before — and security teams need the visibility, control, and speed to respond. At Tanium, we've been tracking this trend closely across customer environments.

Bringing Tanium's real-time endpoint intelligence into enterprise AI workflows with MCP

Enterprise AI is quickly moving from experimentation to day-to-day operational use. Security analysts, IT operators, and platform teams are increasingly working inside AI-native environments — from Claude and Microsoft Copilot experiences to internally built agents and automation workflows. But there is a practical challenge: AI workflows are only as useful as the enterprise systems they can safely reach.