BrowserDeprecated Features and Policy Violations Monitoring

🌐 Browser Deprecated Features and Policy Violations Monitoring

GermainUX RUM JS collects supported reports generated by the browser when a monitored application uses deprecated functionality, violates a browser policy, or triggers a browser intervention.

This monitoring helps developers identify browser compatibility, security-policy, and future-support issues affecting real users.

✨ Benefits

GermainUX helps teams:

Benefit
Identify deprecated browser features still used by an application.
Detect Content Security Policy violations.
Detect Permissions Policy violations.
Identify browser interventions that alter or block application behavior.
Determine which users, pages, browsers, and application versions are affected.
Analyze whether violations increased after a release.
Correlate browser reports with user activity, errors, network requests, and Session Replay.
Prioritize corrections according to frequency and user impact.
Notify developers when an important browser report is detected.

⚙️ Preconfigured monitoring

Browser-report monitoring is preconfigured in GermainUX RUM JS.

When supported by the browser, GermainUX automatically collects the following report types:

Report type	Description
Content Security Policy violation	Application content or behavior violates the page’s configured CSP
Permissions Policy violation	Application code attempts to use a browser capability restricted by policy
Deprecated feature	Application uses a browser feature that is deprecated or scheduled for removal
Browser intervention	The browser modifies, blocks, or restricts application behavior
Other supported browser report	Another browser-generated report exposed through the applicable browser API

No customization is normally required. Additional configuration is needed only when customers want to change the default collection, filtering, categorization, or notification behavior.

🛡️ Content Security Policy violations

Content Security Policy controls which scripts, styles, images, frames, connections, and other resources a page can use.

GermainUX can collect supported CSP violations such as:

Violation
Blocked script
Blocked stylesheet
Blocked image or font
Blocked network connection
Blocked frame
Inline script or style violation
Disallowed resource origin
Other violations reported by the browser

CSP reports can help explain why an application feature, third-party integration, or GermainUX monitoring component did not load correctly.

A CSP violation does not necessarily indicate an attack. It can also result from an incomplete policy, an application change, a browser extension, or an unexpected third-party resource.

🔒 Permissions Policy violations

Permissions Policy allows an application to control access to browser capabilities.

Depending on browser support, GermainUX can detect attempts to use a restricted capability, such as:

Capability
Camera
Microphone
Geolocation
Clipboard
Fullscreen
Payment
Autoplay
Other policy-controlled browser features

The precise capabilities and report details vary by browser version.

Deprecated features

Browsers can report when an application uses a feature that is deprecated or planned for removal.

These insights help development teams:

Action
Find obsolete browser APIs.
Identify pages and workflows that still depend on them.
Determine which users and browsers encounter the deprecated behavior.
Prioritize remediation before browser support is removed.
Validate that a new application release no longer uses the feature.

A deprecation report is a compatibility warning. It does not necessarily mean that the feature has already failed.

🛠️ Browser interventions

A browser intervention occurs when the browser changes, blocks, or restricts behavior to protect performance, security, privacy, or usability.

Examples can include:

Example
Blocking an unsupported or unsafe action
Restricting autoplay
Preventing an inefficient operation
Altering resource-loading behavior
Applying another browser-defined intervention

GermainUX records only the interventions exposed through supported browser reporting APIs.

📥 Collected information

Depending on the browser and report type, a browser-report fact can contain:

Property
Report type
Report name
Message
Page or document URL
Source file
Line and column
Blocked resource or directive
Browser and browser version
Application and environment
Application version
Event timestamp
User session
Other authorized metadata

Not every browser or report provides all properties.

📊 Analysis

Browser reports can be analyzed using measures such as:

Measure
Report count
Unique users affected
Unique sessions affected
Unique pages affected
Report rate
New report count
SLA-violation count

Results can be segmented by:

Segment
Report type
Report name
Message
CSP directive
Page or route
Source file
Application
Environment
Application version
Browser
Browser version
Operating system
User or team
Time period

Useful analytical questions include:

Question
Which CSP directive produces the most violations?
Did new violations appear after a release?
Are violations isolated to one browser version?
Which pages or workflows are affected?
Did the report coincide with a failed feature, JavaScript error, or user abandonment?

Review the available KPIs for Browser Monitoring.

🎞️ Session Replay and correlation

When Session Replay is enabled, a browser report can be associated with the user session in which it occurred.

GermainUX can help correlate the report with:

Correlation
User interactions
Page navigation
JavaScript errors
Console events
Network requests
Popup dialogs
Business-process milestones
Application version
User-visible errors
Abandonment or workflow failure

This helps determine whether a browser report had a visible effect or was only a technical warning.

🔔 Notifications

A browser-report insight can be used to:

Use
Trigger an alert when an SLA is violated.
Notify interested GermainUX users through a Watch.
Appear in a dashboard or report.
Initiate an approved development or investigation workflow.

For example, a Watch can notify a development team when a previously unseen deprecated-feature report appears in production.

A Watch applies a notification to an existing browser insight; it does not create a new insight.

🔧 Optional customization

Customize the preconfigured monitoring only when required.

Possible customizations include:

Customization
Include or exclude selected report types.
Exclude known, accepted, or third-party violations.
Categorize reports by application area or owner.
Associate reports with an application version.
Change severity according to report type.
Define a custom SLA.
Create a Watch for a specific report.
Correlate a violation with an application or business-process KPI.

Avoid filtering all reports from a third-party library without first confirming that they have no effect on the monitored application.

🌍 Browser support

Browser-report monitoring depends on browser reporting APIs.

The documented GermainUX capability is primarily available in supported Chromium-based browsers, including:

Browser
Google Chrome
Microsoft Edge
Opera

Supported report types and properties vary by browser and browser version. A report available in one browser may not be exposed by another.

Validate this capability using the browser versions deployed to the monitored users.

🚫 Limitations

Browser Deprecated Features and Policy Violations Monitoring is not:

Not
A complete application-security scanner
A penetration-testing tool
Proof of regulatory compliance
A complete CSP-management solution
A guarantee that every deprecated API will be reported
A replacement for browser compatibility testing
A record of policy violations that occur before RUM JS starts
A source of reports that the browser does not expose

GermainUX records browser-generated reports available within the monitored page context. Cross-origin frames, third-party pages, extensions, and browser-internal processes may not be accessible to RUM JS.

🔑 Security and privacy

Browser reports can contain URLs, source filenames, blocked origins, and other application details.

Before production use:

Action
Review which report properties are collected.
Exclude sensitive URL parameters.
Remove authentication tokens and secrets.
Mask sensitive user or business identifiers.
Restrict access to detailed technical reports.
Apply appropriate retention policies.
Review reports originating from browser extensions or third parties before sharing them externally.

✅ Validation

Deploy GermainUX RUM JS.
Open the monitored application in a supported browser.
Confirm that the browser supports the required reporting API.
Generate an approved test violation or deprecated-feature event.
Confirm that a browser-report fact appears in GermainUX.
Verify its type, message, page, browser, and timestamp.
Confirm that it is associated with the correct user session.
Validate any configured category, SLA, alert, or Watch.
Repeat the test with the browser versions used in production.

🔧 Troubleshooting

If browser reports are not collected:

Confirm that RUM JS is loaded and running.
Verify that the browser supports and exposes the expected report type.
Confirm that browser-report monitoring is enabled in the UX Monitoring Profile.
Check whether the event occurred before RUM JS initialized.
Verify that the application URL matches the monitoring profile.
Check consent, sampling, and privacy settings.
Confirm that telemetry reaches GermainUX.
Review browser-console errors.
Verify that the tested condition actually generates a browser report.
Test in a supported Chromium-based browser.

📋 Deployment and configuration

For browser-report monitoring
Deploy GermainUX RUM JS.
Use the preconfigured browser-report monitoring unless customization is required.
Validate CSP, Permissions Policy, deprecated-feature, and intervention reporting in supported browsers.
Review the available Browser Monitoring KPIs.
Configure exclusions, categories, SLAs, alerts, Watches, dashboards, or reports only when required.
Correlate reports with Session Replay, JavaScript errors, network requests, application versions, and business processes.
Review URL and source information for sensitive data before production rollout.

ℹ️ Get Help

The Germain Team can help you set this up. Contact GermainUX Support.

Component: JS Profiler, RUM JS, RUM Extension

Feature Availability: 2022.3 or later

Browser Support: only latest Chrome, Edge and Opera