We often get asked by IT Directors: "We already deploy uBlock Origin or AdGuard across our fleet. Does that protect our data during screen shares?"

The short answer is No. The long answer requires understanding the difference between "Incoming" risks (what the web does to you) and "Outgoing" risks (what you do to your data).

Incoming: The Adblocker's Job

Adblockers sit between your browser and the internet. Their primary goal is to stop third-party servers from tracking you. When a website tries to load a tracking pixel from doubleclick.net or a banner from an ad server, the blocker says "No." This protects your browsing history and speeds up page loads.

Outgoing: The Masker's Job

Screen Masking (SecurePresent) solves a completely different problem: Visual Data Leakage.

When you share your screen on Teams or Zoom, you become the broadcaster. If you open a Salesforce record that contains a client's credit card number or email address, an Adblocker sees nothing wrong—that is legitimate content served by Salesforce. It lets the browser render the number, and your video conferencing software broadcasts those pixels to 10 other people.

The "Visual Firewall" Concept

Think of SecurePresent as a firewall for your screen. It analyzes the DOM (Document Object Model) for sensitive text patterns and applies a CSS blur filter before the pixels are rendered.

• Adblocker: Stops unwanted data from coming in.
• SecurePresent: Stops sensitive data from going out visually.

For a complete security posture, modern remote teams need both. One keeps your network clean; the other keeps your video calls compliant.