Deepfake vishing – fraudulent phone calls that leverage AI‑generated voice clones – has rapidly evolved into one of today’s most sophisticated social‑engineering threats. This research dissects the full attack chain, from harvesting target audio on social media to crafting hyper‑realistic calls that bypass traditional caller‑ID and voice‑biometric checks.

Drawing on Group-IB’s experience in real‑world incidents and threat‑intelligence telemetry, this research highlights the sectors most at risk: finance, executive services, and remote‑work help desks. Through detection techniques such as acoustic fingerprinting and multimodal authentication, this research aims to provide cybersecurity professionals with a layered defense strategy that blends AI‑powered anomaly analysis with robust employee awareness training.

By mapping attacker tactics to defensible controls, this research provides security teams with actionable guidance to mitigate deepfake vishing before it damages brand trust and bottom lines...