Modulate
Voice Fraud Detection: Voice-Native AI

Your fraud detection waits for the chargeback. Velma catches synthetic voices in the call.

Modulate's voice-native AI scores 100% of your calls in real time for fraud probability, synthetic voice detection, social engineering, and account takeover. Decisions in 2.1 seconds, at $0.25 per hour.

No sampling.
No keyword guessing.
No post-mortem chargebacks.

Live Intelligence FeedUpdating now
!!Synthetic voice detectedjust now
?!Wire transfer fraud flagged in 2.1sjust now
>>AI-cloned voice on inboundjust now
!!Vishing attempt blockedjust now
!!Account takeover risk: 94%just now
>>CEO voice clone attemptjust now
!!SIM swap fraud detectedjust now
564M+
Hours of conversations analyzed
#1
Accuracy in conversation understanding & deepfake detection
40M+
Users protected across fraud, abuse, and harassment
5x
Better cost performance than legacy fraud detection

It’s not a tooling problem. It’s a coverage problem.

Your fraud team gets the chargeback weeks after the call. Your legacy detection samples 1 to 5% of calls because the per-hour cost hits $29. Either way, the moments that actually catch fraud (live, scored, every call) slip through every day. The gap between ‘we have a tool’ and ‘we catch the attack’ is widening.

If your fraud detection waits for the chargeback, it’s an autopsy.

What you'll catch before the money moves

Fraud Detection

Catch synthetic voices in the call, not after the chargeback

Detect AI-cloned voices, account takeover, social engineering, and vishing in real time. Flag the call before the wire moves.

AI Agent Guardrails

Stop wire fraud at the moment of authorization

Score every call for fraud probability before the agent or IVR authorizes the transaction. Stop the wire while it can still be stopped.

Customer Retention

Flag scripted LLM-driven scam patterns

Detect over-formal diction, repeated phrasing, and rehearsed delivery LLM-driven scam scripts use, even when the voice itself is high quality.

Agent Welfare

Spot stress, urgency, and coercion in seconds

Detect vocal stress, urgency, fear, and rehearsed coercion that real conversations don’t have. Catch the social engineering before it lands.

How it works

How Modulate works differently

Trust and Safety

Every call scored. No sampling.

Replace narrow keyword bands and sampling with multi-signal scoring on every call. 100% coverage at $0.25 per hour.

Compliance Monitoring

Custom fraud signals from voice, not keyword bands

Build new fraud detections from the underlying voice signals that matter to your business. Not the keyword templates your incumbent shipped a decade ago.

Voice-native vs. transcription

Words tell you what was said.
Velma tells you whether the voice is real.

Modulate ships with hundreds of pre-built behaviors and configurable voice signals across fraud, compliance, agent welfare, and customer experience. Every detection is customizable. Every flag is traceable to the moment it happened.

Legacy speech analytics. Keyword and transcript matching.

Transcription + language model

Audio in
STT
Transcript
LLM
Critical context discarded
Tone, emotion, prosody, sarcasm, speaker dynamics, intent, deception cues, hesitation. All lost before analysis.
WHAT TRANSCRIPTION CAPTURES
WordsCaptured
The literal transcript, what was said
Intent & behaviorLost
Complaining, threatening, bargaining, deception
Tone & emotionLost
Anger, frustration, fear, sarcasm, joy
ProsodyLost
Pitch, rhythm, stress, intonation
Speaker dynamicsLost
Turn-taking, interruptions, dominance
Deception & stress cuesLost
Hesitation, micro-tremors, vocal anxiety
Acoustic authenticityLost
Deepfakes, synthetic voice, spoofing
vs
Velma by Modulate (Ensemble Listening Model)

Voice-native AI, built to listen like a human

Audio in
Velma by Modulate
Complete understanding preserved
Emotion, intent, fraud signals, prosody, deception, speaker dynamics, 100+ behaviors. All from raw audio.
WHAT VELMA CAPTURES
WordsCaptured
Accurate transcription, 57+ languages
Intent & behaviorCaptured
100+ key behaviors detected in real time
Tone & emotionCaptured
20+ emotions from the raw acoustic signal
ProsodyCaptured
Pitch, rhythm, emphasis, pacing
Speaker dynamicsCaptured
Real-time diarization, multi-speaker patterns
Deception & stress cuesCaptured
Vocal stress, coercion, lying indicators
Acoustic authenticityCaptured
#1 deepfake detection on Hugging Face

How Velma fits

Built for voice fraud detection. Bolts onto your fraud stack, doesn’t replace it.

Modulate sits between the platforms you already record audio on and the systems your team already works in. No rip and replace. No data migration. No new console for your agents.

Audio in

Five9 · Genesys · Twilio · MS Teams · SIP · call recordings

Velma by Modulate

Real-time scoring on every call. No sampling, no keyword bands, no waiting for the post-mortem. Velma flags AI-cloned voices, social engineering, and account takeover in 2.1 seconds.

Data out

Salesforce · Zendesk · BI tools · QA workflow · webhooks

Built for the verticals where voice fraud hits hardest

Three industries. One pattern.

Every regulated voice business has the same gap. Too much keyword noise, no real-time signal. Here is what it costs, and what Modulate hears instead.

Banking
$1M+

per missed voice fraud event

7 to 10% of annual revenue lost to voice fraud, on average across the industry.

The gap
Vishing and account takeover attempts buried in unreviewed call volume
Synthetic CEO calls authorizing wires before the bank can flag them
Fraud risk unread until the chargeback arrives weeks later
What Modulate hears

Synthetic voice, stress markers, social engineering scripts, and missed disclosures in the moment they happen. Not in next quarter's audit.

Insurance
340%

growth in claims-channel voice fraud in 2025

Synthetic voices filing fraudulent claims and altering policies before adjusters can verify. Billions paid out on fraud that surfaces after the fact.

The gap
Claims-channel fraud surfaces post-payout. Adjusters acting on transcripts that strip out tone, intent, and pressure cues.
Policyholder identities impersonated by AI voices that pass basic verification
Fraud teams reviewing 1% of claims calls while attacks scale 340%
What Modulate hears

Intent signals, deception markers, and synthetic voice flags before the payout authorizes. Traceable to the exact moment in the call.

Telecom
$10 to $20k

per account takeover incident

SIM swap fraud and AI-cloned voice account takeovers are the fastest-growing telecom fraud vector.

The gap
SIM swap and AI-cloned voice scams lost in keyword noise
Synthetic-voice billing fraud clears before flags trigger
Account takeover signals buried under low-signal alerts your fraud team can’t process
What Modulate hears

Fraud probability scored live on every inbound call. AI-cloned voices and SIM-swap impersonation caught in 2.1 seconds.

Built for Enterprise Scale and Compliance

Compatible with key technology partners:

SlackZoomFive9
Microsoft TeamsZendeskGenesysSIP

Follows ISO 27001 security processes and HIPAA-compliant practices. Built to operate within GDPR, CCPA, and EU AI Act requirements so security teams say yes on day one.

Your conversations stay yours. Modulate never trains on your audio. You control retention and use.

Auditable by design. Every signal traces to the exact moment in the call, with built-in bias controls for high-stakes compliance review.

Trusted with 40M+ users and hundreds of millions of conversations across the world's largest voice platforms, and now ready for your contact center.
See Velma in action

Stop chasing chargebacks. Start catching attacks.

Book a 20-minute walkthrough. We’ll run Velma against real voice fraud samples, or you can upload your own audio. See the flag, score, and decision in 2.1 seconds per call.