Breacher.ai has announced the general availability of its OSES™ AI Vishing Simulator, a self-run platform that uses agentic AI voice agents to place real phone calls to employees, help desks, and voicemail systems. The tool is designed to test whether an organization's verification procedures hold up when a live caller pushes back, filling a gap that email-focused security testing has long left open.
The timing reflects a sharp shift in attacker behavior. Mandiant's M-Trends 2026 report found that voice phishing accounted for 11 percent of intrusions in its 2025 investigations, making it the second most common initial infection vector ahead of email phishing at 6 percent. CrowdStrike's 2025 Global Threat Report recorded a 442 percent rise in vishing between the first and second halves of 2024. A phone call reaches an employee with no email gateway, link scanner, or reputation score in front of it, leaving the verification procedure as the only control in the path, and most organizations have never tested whether it holds.
The simulator bundles seven capabilities into one product: real calls on live phone lines rather than recordings or robocalls; outbound calls posing as IT support, an executive, or a vendor; inbound calls to the service desk requesting password resets, MFA re-enrolment, or account changes; voicemail drops that set up a callback answered live by the same persona; deepfake voice using a synthetic voice or a consented clone of a real executive; agentic AI that listens, adapts, handles objections, and decides what to say next; and prompt-built pretexts that let a security team describe the caller, reason, and objective in plain language or paste in a reported vishing call.
Jason Thatcher, Founder and CEO of Breacher.ai, framed the product as a direct response to the changing threat model. "The phone call is now the front door, and the person who answers it is working without a filter, a gateway, or a second opinion," he said. "AI agents can already hold that conversation at scale. The only way to know whether your verification procedure holds is to call it the way an adversary would."
Security teams run the simulator themselves in four steps: write the pretext as a prompt, choose a synthetic or consented cloned voice, and launch calls against users synced from Microsoft Entra ID or Google Workspace, with no endpoint agent and no phone system changes. Every call rolls into the OSES™ Risk Score, which records how far the worst call progressed (DEPTH) and how widely calls succeeded across the organization (SPREAD), benchmarked against the customer's sector.
Safeguards are built in. Executive voices are cloned only with the consent of the person being cloned, confirmed by a biometric check and voice verification before anything is generated, and an administrator cannot authorize cloning someone else. Every campaign runs under signed authorization, call recording is configured to the consent rules of each jurisdiction in scope, and reporting is organizational, with no named individuals.
The simulator is available today starting at $199 a month. Organizations that want email, SMS, QR, Microsoft Teams, and live video avatars orchestrated alongside voice can move to the full OSES™ Platform and keep their OSES™ Risk Score baseline. Breacher.ai also offers managed delivery for teams that want the simulator run for them.
