Threats & Scams

Browser Extensions and App Permissions

How extensions and applications gain access, what broad permissions mean, and how to review or remove access you no longer need.

Permissions are a trust decision

An extension or app may need access to tabs, files, location, contacts, camera, microphone or account data to provide a feature. The same access can create risk if the software is malicious, compromised or later sold to a different operator.

Match access to purpose

A weather app may reasonably request approximate location; a simple calculator should not need contacts or microphone access. Broad access does not prove wrongdoing, but it deserves a clear explanation.

Review browser extensions

  • Remove extensions you no longer use.
  • Check whether an extension can read and change data on every website.
  • Prefer “on click” or selected-site access when the browser offers it.
  • Review the publisher and recent ownership or policy changes.

Review connected account access

Signing in with a major platform can grant a third-party service profile or account access. Periodically remove old services from the account’s connected-app or third-party-access page.

Mobile and desktop permissions

Operating systems usually provide privacy dashboards for camera, microphone, location, files and notifications. Deny access that is unnecessary, and reconsider apps that stop working unless given unrelated permissions.

Updates can change the equation

An extension may request new privileges after an update. Read the new request rather than approving automatically. If the purpose is unclear, remove the extension until you can verify it.

Practical takeaway

Keep fewer extensions and apps, grant the narrowest practical access and review permissions after updates or ownership changes.

Accessibility and device-administration access

These powerful permissions can allow an app to read screen content, click buttons, install profiles or control device behaviour. Legitimate assistive and management tools may need them, but a simple utility usually does not. Treat an unexplained request for this level of access as a strong reason to stop.

Removal is not always the end

After uninstalling an extension or app, review the associated online account for connected access, active sessions and stored authorizations. Revoke access there as well. If the software handled sensitive information, change affected credentials and inspect account activity.

Reputation is useful but incomplete

Store reviews and download counts can be manipulated or reflect an earlier, safer version of an extension. Prefer known publishers, examine the privacy policy and consider whether the feature is worth permanent access to browsing or account data. Fewer extensions reduce the number of components that can change or be compromised.

Permissions after a device transfer

When selling, recycling or giving away a device, sign out of applications and remove it from connected-device lists. A factory reset should follow the platform’s official process, but account-side revocation is still useful because it closes sessions that might otherwise remain trusted.

Educational scope: This page provides general information, not personalized incident response, legal advice, compliance advice or a guarantee of security.

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