Why screen shares leak
It is rarely the page you planned to show. It is the sidebar beside it, the autocomplete under the search box, the notification that slides in, or the tab title of the inbox you left open. On a live call one viewer screenshot is enough; in a recording the leak is permanent.
The data that leaks most often: customer names and emails in CRMs, phone numbers in contact lists, card numbers and IBANs on billing pages, API keys in dashboards and logs, and client names that reveal who else you work with.
The manual options
1. Share a single window or tab, not the whole screen
Every meeting tool lets you share one window. It keeps notifications and other apps out, but everything inside that window, including other tabs' titles in some browsers, is still visible.
2. Use a demo account with fake data
The safest option when it exists. Many tools have no sandbox, the fake data never looks like a real customer's, and it drifts out of date.
3. Zoom in, collapse panels, close tabs
Cheap and immediate, and easy to undo by accident with one click mid-demo.
4. Blur in post-production
For recordings only. Tracking a moving email address frame by frame takes longer than recording the lesson, and one missed frame is still a leak.
5. Edit the page with developer tools
Possible, fragile, and undone by the next page refresh or live update.
Make it automatic with BlurPilot
BlurPilot is a browser extension for Google Chrome™ and Microsoft Edge that finds sensitive data on any web page and blurs it before anyone else sees it. Everything runs on your device.
- Install BlurPilot and allow it on all sites, or only the sites you choose.
- Press Alt+Shift+H before the call. Emails, phone numbers and card numbers blur on every tab; the toolbar icon turns red.
- Click to blur anything detection cannot know about, such as a customer column, and remember it for the whole site.
- Add custom words (Pro) for client names and project codes, and switch on API keys, IBANs and IP addresses.
- Press the shortcut again after the call. Blur disappears instantly; the page never reloads.
For high-risk demos, blur everything except hides the whole page apart from the parts you choose, which also covers charts and other canvas content detection cannot read.
Checklist for the five minutes before a call
- Close tabs you will not need, especially email and chat.
- Turn on Do Not Disturb so notifications do not appear on the share.
- Switch on BlurPilot Presenter Mode and check the red badge.
- Open the pages you will show once and look for anything not blurred.
- Share a window rather than the whole screen when you can.
- For recordings, watch the first minute back before publishing.
What no browser tool can cover
Desktop apps, images and video, PDFs opened outside the page, and text drawn on a canvas are outside what a browser extension can read. Use a single-window share and blur-everything-except for those, and test with a second device watching the share.
Next: see how sales teams, developers and creators set it up.