PCI DSS Audio Redaction for Call Recordings

Call Recordings are Your Biggest PCI Exposure

Every time a customer reads a card number over the phone, that data gets embedded in the recording. Under PCI DSS, storing unredacted cardholder data in call recordings violates multiple requirements and puts your certification at risk.

Manual review is slow, inconsistent, and does not scale. Pause-and-resume recording misses data when agents forget to trigger it. And legacy tools cannot distinguish a 16-digit credit card number from a 16-digit reference number in spoken audio.

Mask displayed PAN

Full PAN must be masked so only the last four digits are visible. VIDIZMO mutes or bleeps spoken PAN in audio, preserving call integrity while removing the exposed number.

Retention limits

Cardholder data that exceeds its retention period must be deleted. Automated redaction lets you keep the recording for QA, training, and dispute resolution without retaining the prohibited data.

Prohibit SAD storage

CVV/CVC codes and authentication data must not be stored post-authorization. VIDIZMO detects spoken CVVs and mutes them before the file hits long-term storage.

Restrict access

Role-based access controls ensure only authorized personnel access unredacted recordings. QA teams review redacted output without exposure to raw cardholder data.

Log and monitor

Every redaction action is logged with timestamp, user identity, PII category, and confidence score. Audit-ready reports support QSA assessments and internal compliance reviews.

Contact centers & BPOs

Outsourced call centers process thousands of payment calls daily across BFSI, collections, and healthcare verticals. Redact spoken PAN and CVV from every recording before it reaches QA, training, or archival storage.

Financial services

Banks, insurers, and wealth management firms record customer calls containing account numbers, card details, and policy information. Meet GLBA and PCI DSS simultaneously with automated audio redaction.

Debt collections

Collections agencies navigate PCI DSS, TCPA, and FDCPA concurrently. Payment arrangements often involve card numbers spoken aloud. Redact cardholder data while preserving the conversation for compliance documentation.

Healthcare billing

Patient billing calls capture insurance IDs and payment card details in the same conversation. Apply HIPAA and PCI DSS redaction rules to the same recording in a single pass.

Retail & e-commerce

Phone orders and customer service calls contain card-on-file details, refund authorizations, and account lookups. Redact payment data before recordings enter the QA pipeline.

CCaaS & telephony platforms

Cloud contact center vendors serving regulated clients need redaction as a platform capability. Deploy VIDIZMO Redactor via API to offer PCI-compliant call recording as part of your service delivery.

Ingest

Upload recordings individually, in bulk batches, or via API triggers from your telephony platform. Supports 255+ audio and video formats.

Detect

AI transcribes the audio and applies NER to identify credit card numbers, CVVs, expiration dates, SSNs, and 33+ other PII categories in the spoken content.

Redact

Mute or bleep detected segments automatically. Confidence thresholds are configurable from 25% to 90% to balance precision against recall for your use case.

Review & export

QA reviewers play back redacted recordings in-platform. Approve, flag, or manually correct. Export redaction reports for PCI DSS audit documentation.

Contextual PII detection

AI uses contextual cues — not just digit counting — to distinguish credit card numbers from reference numbers, case IDs, and other 16-digit strings in conversation.

Batch processing at scale

Queue thousands of recordings for overnight processing. Tested with 1.1 million+ files. No manual intervention required once the batch is configured.

Mute or bleep

Choose between silent muting and audible bleep tones for redacted segments. The original recording duration and sync are preserved for legal defensibility.

Speaker diarization

Identify and separate agent from customer speech. Redact cardholder data spoken by the customer while preserving the agent's responses for QA and training purposes.

Transcript-based redaction

Navigate the auto-generated transcript to locate, verify, and redact specific words or phrases. Click-to-jump from transcript to timeline for fast review.

Custom redaction rules

Define regex patterns, keyword lists, and entity categories specific to your environment. Target card number formats, internal account codes, or industry-specific identifiers.

Configurable confidence thresholds

Set AI detection sensitivity between 25% and 90%. Choose Small, Medium, or Large models depending on your speed-vs-accuracy tradeoff.

Redaction audit reports

Every redaction decision is documented with the PII category, timestamp, confidence score, reviewer identity, and approval status. Exportable for QSA review.

API integration

Trigger redaction workflows automatically from your CRM, call management platform, or telephony system. Webhook-based ingestion and output delivery.

PCI DSS does not mandate a specific technology, but it requires that stored cardholder data be protected and that sensitive authentication data (CVV, PIN) not be stored post-authorization. If your call recordings capture card numbers or CVVs spoken aloud, redaction is one of the most practical ways to meet Requirements 3.1, 3.2, and 3.3 without losing the operational value of the recording.

VIDIZMO Redactor uses contextual NER models that analyze the surrounding conversation — not just digit counts. The AI evaluates conversational cues like "my card number is" or "the last four digits," Luhn algorithm validation, speaker context, and the position of the number within the payment flow. You can also set custom rules to whitelist known reference number formats that should not be redacted.

Yes. On-premises deployment supports fully air-gapped environments where no internet connectivity is required. All AI processing, transcription, and redaction happen locally on your infrastructure. This is particularly relevant for organizations whose clients restrict data from leaving their private network.

VIDIZMO Redactor supports queue-based bulk processing that has been tested with over 1.1 million recordings. Batches can be configured for overnight or off-hours processing without manual intervention. For daily volumes like 100–500 calls, the system processes these routinely within standard processing windows.

Yes. Reviewers with appropriate roles can play back redacted recordings directly in the platform, verify redaction accuracy, and approve or flag files for manual correction — all without downloading or exporting the audio. Role-based access controls ensure QA teams only see the redacted version.

VIDIZMO Redactor provides REST APIs for automated recording ingestion, redaction triggering, and output delivery. Integrate with your existing CRM, call management system, or CCaaS platform to create zero-touch redaction workflows. Once trust is established, most organizations move from manual upload to full API integration.

Confidence thresholds are configurable between 25% and 90%, letting you tune the aggressiveness of detection. Higher thresholds reduce false positives. The human-in-the-loop review step lets QA reviewers verify and correct any over-redaction before the file is finalized. Custom whitelists for known patterns (like internal reference numbers) further reduce false positives.

Redact Cardholder Data from Call Recordings Automatically