Implementing Automated PII Redaction in Screen Recording Playback Using Region Detection

How-To-Articles
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Implementing Automated PII Redaction in Screen Recording Playback Using Region Detection

What This Guide Covers

This guide details the architecture and configuration required to implement automated Personally Identifiable Information (PII) redaction within Genesys Cloud CX Screen Recording playback. You will configure custom Region Detection rules in the Admin console to identify sensitive data patterns (credit card numbers, Social Security Numbers, email addresses) and apply dynamic blurring during playback. The end result is a compliant monitoring environment where agents can access historical screen sessions without exposing regulated customer data to supervisors, QA analysts, or compliance auditors.

Prerequisites, Roles & Licensing

  • Licensing: Genesys Cloud CX 1 (or higher) with the Screen Recording add-on enabled. Note that Screen Recording is a distinct entitlement from Voice Recording.
  • Permissions:
    • Telephony > Trunk > Edit (if integrating with telephony triggers for session correlation).
    • Recording > Screen Recording > Edit
    • Recording > Screen Recording > View
    • Recording > Screen Recording > Export (if exporting redacted clips).
    • User > User > Edit (to assign specific redaction policies to user groups).
  • External Dependencies: None. This feature relies entirely on client-side JavaScript pattern matching executed within the Genesys Cloud playback engine. No external middleware or API calls are required for the redaction logic itself.
  • Browser Support: Chrome, Edge, Firefox, Safari (latest versions). The redaction overlay is rendered via HTML5 Canvas/CSS overlays in the browser, so legacy browser support is not applicable.

The Implementation Deep-Dive

1. Defining the Redaction Policy and Scope

Before configuring specific regions, you must establish the governance scope. Screen Recording captures the entire browser viewport or specific application windows. The redaction engine operates on a “deny-by-default” or “allow-by-default” basis depending on your configuration of the Redaction Policy. In Genesys Cloud, the default behavior for Screen Recording is often to record everything. Redaction is applied at playback time, not at recording time. This is a critical architectural distinction. The raw video stream remains unredacted in storage; the redaction is an overlay applied by the playback client. This allows for forensic recovery if necessary but introduces latency in playback rendering.

The Trap: Configuring redaction policies at the global level without granular user group segmentation.
If you apply a strict PII redaction policy globally, you may inadvertently blur data that QA analysts need to see for process adherence checks (e.g., verifying an agent entered the correct case ID). Conversely, applying no redaction globally violates GDPR/CCPA/HIPAA. The failure mode here is a compliance audit failure or an operational breakdown where QA cannot perform their duties.

Architectural Reasoning:
We implement a tiered approach. We create a specific User Group (e.g., “Compliance Auditors”) and assign them a policy that disables redaction for forensic review. We assign the standard “Supervisors” and “QA” groups to a policy that enables aggressive redaction. This ensures that the raw data is never deleted (preserving audit trails) while ensuring that daily operational views are sanitized.

2. Configuring Custom Region Detection Rules

Region Detection is the core mechanism for automated redaction. It uses Regular Expressions (Regex) to scan the rendered text within the screen recording frame. When a match is found, the engine draws a black box (or custom blur) over the coordinates.

Navigate to Admin > Recordings > Screen Recording > Redaction.

Step 2.1: Creating a New Redaction Rule

  1. Click Add Rule.
  2. Name: PCI-CC-Number-16-Digit.
  3. Type: Text Pattern.
  4. Pattern: You must use a robust Regex that matches Visa, Mastercard, Amex, and Discover formats.
    \b(?:\d[ -]*?){13,16}\b
    Note: This is a simplified pattern. For production, use a stricter pattern that validates Luhn algorithm checks if possible, or at least enforces length constraints to reduce false positives.
  5. Confidence Threshold: Set to High. This reduces false positives but may miss obfuscated data.
  6. Action: Blackout.

The Trap: Using overly broad Regex patterns.
A common misconfiguration is using \d{16} which matches any 16-digit number, including internal order IDs, case numbers, or random system-generated tokens. This results in “Redaction Fatigue,” where supervisors see black boxes everywhere, rendering the recording useless for context. The downstream effect is agents disabling Screen Recording entirely because it interferes with their workflow visibility, or supervisors ignoring the redacted boxes because they cannot distinguish between PII and operational data.

Architectural Reasoning:
We prioritize specificity over sensitivity. We define patterns for known PII formats (SSN: ^\d{3}-?\d{2}-?\d{4}$, Email: ^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$). We exclude known internal identifiers by adding “Exclude Patterns” if the platform allows, or by refining the Regex to require context (e.g., preceding text like “SSN:” or “Credit Card:”).

Step 2.2: Implementing Region-Based Static Redaction

Not all PII is text. Some is visual (e.g., a customer’s face in a video call overlay, or a specific field in a CRM that is always in the same location). For these, we use Static Regions.

  1. Click Add Region.
  2. Name: CRM-Customer-Address-Block.
  3. Coordinates: You must define the X, Y, Width, and Height in pixels.
    • Challenge: Screen resolutions vary. An agent on a 1920x1080 monitor has different coordinates than one on a 1366x768 laptop.
    • Solution: Genesys Cloud Screen Recording normalizes coordinates relative to the application window, not the full screen. You must test the coordinates on the standard resolution used by the majority of agents. If your workforce has highly variable resolutions, Static Regions are unreliable. In this case, rely on Text Pattern detection.

The Trap: Hardcoding pixel coordinates for dynamic UIs.
If the CRM interface updates (e.g., a new banner is added at the top), the Y-coordinate for the address block shifts. The static redaction box will now cover the wrong area, potentially missing the PII or blurring critical agent actions. The downstream effect is a false sense of security. Compliance auditors will flag this because the redaction is inconsistent across different UI versions.

Architectural Reasoning:
We avoid Static Regions for dynamic content. We only use Static Regions for fixed UI elements (e.g., a company logo that contains internal branding not meant for external QA, or a persistent system clock that reveals internal server times). For PII, Text Pattern is the only robust method.

3. Integrating with Architect for Session Correlation

While Screen Recording is often triggered manually or by global policy, best practice in enterprise deployments is to trigger recording only when necessary (e.g., when a call involves a high-value transaction). This reduces storage costs and processing load.

We use Architect to detect PII in the voice channel and trigger Screen Recording for the corresponding desktop session.

  1. Create a Flow: PCI-Transaction-Detection.
  2. Start Node: Connect to Voice Media.
  3. Analyze Speech Node: Use the built-in Speech Analytics model to detect “Credit Card Number” or “SSN”.
    • Note: This requires the Speech Analytics add-on.
  4. Condition: If SpeechAnalyticsResult contains PII_Detected.
  5. Action: Trigger Screen Recording for the current agent’s session.
    • Use the Start Screen Recording action block.
    • Pass the SessionID to correlate the audio and video streams.

The Trap: Triggering Screen Recording based on voice-only PII detection without validating the desktop context.
If an agent mentions a credit card number in a voice call but is not looking at the CRM screen (e.g., they are taking notes on paper), the Screen Recording will capture an empty desktop or irrelevant applications. This creates noise in the QA queue. The downstream effect is increased QA review time and storage bloat.

Architectural Reasoning:
We implement a “Dual-Trigger” logic. We only start Screen Recording if:

  1. PII is detected in Voice.
  2. The Agent’s active window is the CRM application (detected via Application Usage metrics in Genesys Cloud).
    This ensures that we only record screen activity when it is relevant to the PII being discussed.

4. Managing Playback and Export Compliance

When supervisors or QA analysts play back the recording, the redaction engine applies the overlays in real-time.

  1. Playback UI: The redacted areas appear as black boxes.
  2. Export: When exporting a clip (e.g., for training), you must ensure the export process respects the redaction policy.
    • Navigate to Recordings > Screen Recording > Export.
    • Select the recording.
    • The system will render the video with the redaction overlays burned in.

The Trap: Exporting raw video streams via API without redaction.
If you use the Recording API (GET /v2/recordings/screen/{id}/media) to download the raw video file, the redaction overlays are not applied. The raw file contains the unredacted PII. If this file is uploaded to a third-party training platform or shared via email, you have created a massive compliance breach. The downstream effect is potential GDPR fines and loss of customer trust.

Architectural Reasoning:
We restrict access to the raw media API endpoints to only the Genesys Cloud Admin group and the Compliance Forensics group. All other users (Supervisors, QA, Training) must use the Export with Redaction feature, which burns the overlays into the video file. We also implement a Data Loss Prevention (DLP) rule in our cloud storage to block any unredacted screen recording files from being uploaded to external buckets.

Validation, Edge Cases & Troubleshooting

Edge Case 1: False Positives in Internal IDs

The Failure Condition: Agents report that their internal case numbers (e.g., CASE-123456789012) are being redacted because they match the 12-digit pattern of a phone number or credit card.
The Root Cause: The Regex pattern for Credit Card Numbers (\d{13,16}) is too broad and does not exclude known internal ID formats.
The Solution: Refine the Regex to exclude patterns that start with known prefixes.

^(?!CASE-)\b(?:\d[ -]*?){13,16}\b

This negative lookahead ensures that any sequence starting with “CASE-” is not matched. You must maintain a list of all internal ID prefixes and update the Regex accordingly.

Edge Case 2: Resolution Mismatch in Static Regions

The Failure Condition: A supervisor plays back a recording from an agent using a 4K monitor, but the static redaction region for the “Customer Name” field is misaligned, exposing the name.
The Root Cause: Static regions are defined in absolute pixel coordinates. Genesys Cloud normalizes coordinates based on the application window size, not the full screen. However, if the agent resized the CRM window during the session, the coordinates shift.
The Solution: Disable Static Regions for dynamic UI elements. Rely solely on Text Pattern detection for PII. For fixed elements (like a logo), use a larger bounding box with a 10% padding margin to account for minor UI shifts.

Edge Case 3: Latency in Playback Rendering

The Failure Condition: When playing back a long screen recording (e.g., 2 hours), the video stutters or freezes when the redaction engine encounters a high density of text patterns (e.g., a spreadsheet with 10,000 rows of data).
The Root Cause: The redaction engine runs in the browser’s main thread. Processing thousands of Regex matches per frame causes UI thread blocking.
The Solution: Limit the Max Regions per Frame setting in the Redaction Policy. Set this to a reasonable number (e.g., 50). If a frame contains more than 50 matches, the engine will skip redaction for that frame to maintain playback smoothness. This is a trade-off between compliance and usability. For critical compliance scenarios, advise agents to minimize the amount of PII visible on screen at any one time (e.g., using “Focus Mode” in the CRM).

Edge Case 4: Redaction Bypass via Screenshot

The Failure Condition: An agent takes a screenshot of their screen before the recording starts, or uses a secondary monitor to display PII that is not being recorded.
The Root Cause: Screen Recording only captures the primary display or the specified application window. It cannot prevent agents from capturing data outside the recording scope.
The Solution: This is a policy and training issue, not a configuration issue. Implement a DLP (Data Loss Prevention) policy at the endpoint level (using tools like Microsoft Intune or Jamf) to block screenshots or clipboard copying when the CRM application is active. Genesys Cloud Screen Recording cannot solve this alone.

Official References