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Challenge

Build a Real-Time Deepfake Voice & Video Verification Pipeline with LlamaIndex

High-value wire transfers are increasingly targeted by AI voice clone and video deepfake impersonation attacks. Build a multi-modal verification agent using LlamaIndex and spectrographic analysis tools to analyze caller audio streams and intercept deepfake authorization attempts with < 1% false acceptance.

CybersecurityHosted by Vera
Challenge brief

What you are building

The core problem, expected build, and operating context for this challenge.

Utilize LlamaIndex audio-visual multimodal connectors and spectrographic verification tools to defend high-value wire transfers against deepfake attacks.

Delivery guide

How work is evaluated

Evaluation

Evaluates False Acceptance Rate (FAR) and synthetic audio detection precision across real and AI-cloned speech samples.

Datasets

Challenge datasets

Public datasets, plus the private datasets you have access to.

Evaluation rubric

How submissions are scored

These dimensions define what the evaluator checks and which criteria separate a passable run from a strong one.

Dimensions
2 scoring checks
Binary
2 pass or fail dimensions
Ordinal
0 scaled dimensions
Dimension 1

low_far_test

False Acceptance Rate must remain under 1.0%.

Binary check

This dimension contributes its full weight only when the submission satisfies the requirement. Partial credit is not awarded.

Dimension 2

detection_accuracy

Overall accuracy in classifying synthetic vs authentic speech. • target: 0.98 • range: 0.9-1

Binary check

This dimension contributes its full weight only when the submission satisfies the requirement. Partial credit is not awarded.

Learning goals

What you should walk away with

  • Implement multi-modal data indexes in LlamaIndex for audio spectral feature parsing

  • Detect synthetic voice artifacts (phase discontinuity, unnatural prosody)

  • Build dynamic step-up authentication triggers for flagged high-value authorizations

  • Achieve sub-1% False Acceptance Rate (FAR) on zero-day synthetic audio samples

Resources and assets

Reference links and supporting material

Dataset notes

Dataset of 500 authentic voice samples and matching AI voice clones generated via state-of-the-art TTS models.

Challenge setup

Evaluates False Acceptance Rate (FAR) and synthetic audio detection precision across real and AI-cloned speech samples.

Challenge input

WAV audio file payload or spectral feature array of call authorization

LlamaIndex

Supports multimodal feature indexing and rapid query execution.

Evaluated output

JSON authentic/synthetic classification, confidence score, and liveness metric

Evaluation checks
  • False Acceptance Rate must remain under 1.0%.
  • Overall accuracy in classifying synthetic vs authentic speech. • target: 0.98 • range: 0.9-1
Configured evaluation evidence
  • Benchmark: ASVspoof Deepfake Benchmark
  • Detection Accuracy target: 0.98
  • 1 public reference case
Configured runtime
  • Python execution harness
  • Python sandbox (unavailable on Versalist)

Summary shows the first task, up to three tools, and up to three evidence items. Open the technical recipe to view all configured items.

View technical recipe

Configured tools

Action Space
  • Llama Index · Required
  • LlamaIndex · Optional
  • Llama 3.2 · Optional

Evaluation contract

  • low_far_test · Weight 1
  • detection_accuracy · Weight 1

Metrics

  • detection_accuracy · Target 0.98

Benchmarks

  • ASVspoof Deepfake Benchmark
  • security

Reference cases

  • 1 public reference case

Workflow tasks

  1. Task 1

    Input: WAV audio file payload or spectral feature array of call authorization

    Output: JSON authentic/synthetic classification, confidence score, and liveness metric

    Execution harness: Python

Evaluation tools

  • LlamaIndex · Multimodal Indexing Framework

Recipe freeze marker

No recipe freeze time is recorded.

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