Webinars

RC4 in Active Directory: The Silent Risk That’s Harder to Find Than You Think

RC4 has long been recognized as a weak encryption standard in Active Directory—but identifying where it’s still in use is far more complex than most teams realize. As Microsoft shifts from audit to enforcement in July 2026, organizations that haven’t mapped their RC4 dependencies risk discovering them the hard way: through authentication failures, application outages, and security gaps.

In this webinar, we break down why RC4 continues to persist in Kerberos environments, how it silently expands your attack surface, and what practical steps security teams can take now to uncover exposure—before enforcement deadlines force the issue.

What you’ll learn:

Why RC4 is still a critical security risk

Understand how Kerberos ticket encryption works and why RC4 enables Kerberoasting attacks—even from low-privileged accounts.

Where RC4 hides in your environment

Learn why common visibility gaps—like undefined encryption settings and legacy dependencies—make RC4 exposure difficult to detect, especially across service and machine accounts.

What Microsoft’s enforcement timeline means for you

Get clarity on the July deadline and the real-world impact of inaction, from authentication failures to business disruption.

How to identify and validate RC4 usage in real time

Explore a practical, two-step approach to uncovering RC4 dependencies using live authentication data and risk indicators.

How to stay ahead of enforcement with continuous visibility

See how Silverfort helps security teams proactively find and prioritize RC4 exposure across the environment—giving you the visibility to drive remediation confidently.

Watch on-demand