---
title: "License Cipher SDK for Web 1.4.1"
description: "Enhanced Protection Against Key Extraction Tools"
---
> For the complete documentation index, see [llms.txt](/llms.txt).

**What’s New**

- **Enhanced Protection Against Key Extraction Tools**\
    This update introduces detection and blocking of a newly identified version of a DRM key extraction tool. By analyzing behavior patterns and signature-level characteristics of the updated tool, the DRM License Cipher now proactively prevents license responses from being delivered to unauthorized or manipulated client environments.


**Why It Matters**\
DRM key extraction tools pose a significant threat to secure content distribution, particularly on web platforms where browser-based vulnerabilities are exploited. This update strengthens our ability to safeguard Widevine licenses and encryption keys in real time, ensuring that only legitimate users can access protected content.