Test Defenses Against Voice Note Impersonation on Messaging Platforms
Your CEO is messaging from a new number, claiming they lost their phone on vacation. They send a voice note in their own voice asking for an urgent favor. Would your employees comply? Messaging apps like WhatsApp have become prime channels for targeted social engineering attacks using cloned voice notes.

Our AI agents conduct realistic voice phishing calls that adapt in real time, testing
whether employees can identify and resist sophisticated vishing attacks.

STEP 1
Upload an executive's photo and display name to create a spoofed WhatsApp profile, mirroring how attackers impersonate leadership.

STEP 2
Paste a YouTube, podcast, or conference URL. Callstrike's Voice Sniper extracts the audio and generates a voice clone in seconds.

STEP 3
Craft the opening message using social engineering pretexts: lost phone, traveling, using a spouse's device.

STEP 4
Generate a synthetic voice note using the cloned voice. The target hears their boss's voice and trusts the request instantly.

STEP 5
Escalate with a wire transfer request or credential reset. Callstrike tracks whether the employee complies, flags it, or verifies through a secondary channel.
Targeted Attack Simulation
Craft targeted messaging attacks that mirror real-world executive impersonation tactics,
complete with cloned voice notes and delivery across platforms.
Create authentic-sounding voice notes in any executive voice from just 30 seconds of source audio.
Test attacks across WhatsApp, Telegram, Signal, and other popular messaging platforms.
Design attack narratives specific to your organization - travel scenarios, urgent requests, confidential matters.
Monitor how employees respond - do they comply, verify through other channels, or report the suspicious contact?
Who Should Test WhatsApp
Security
Messaging apps bypass email security controls entirely. These teams need to know if their
people can spot the difference
Executive Protection
Test whether employees verify requests that appear to come from executives through unofficial channels.
Finance Team Resilience
Validate that finance and accounting teams follow verification protocols for payment requests received via messaging apps.
IT Security Validation
Test whether IT teams grant access or reset credentials based on messaging app requests from apparent executives.
Frequently asked questions
WhatsApp and other messaging apps bypass your email security controls entirely. They create a direct channel to employees that many security programs ignore. Attackers increasingly use messaging apps because employees tend to trust voice notes from apparent executives more than emails.
We clone the target voice from just 30 seconds of source audio. Then we generate voice notes with whatever message content you specify. The voice notes sound authentic and are indistinguishable from genuine recordings to most listeners.
Yes, we conduct real simulations on actual messaging platforms. This tests your employees' actual behavior when receiving suspicious messages, not their theoretical knowledge of what they should do.
The messages come from phone numbers that appear unconnected to your organization, just like a real attack. After the simulation, you can reveal the test to employees as part of the training process.
We support WhatsApp, Telegram, Signal, and other popular messaging platforms. Different platforms may be more relevant depending on your organization's communication patterns and geographic locations.
The most effective scenarios exploit trust and urgency: executive claiming to have lost their phone, traveling internationally and needing a quick favor, confidential matter that can't go through normal channels. These mirror real-world attack patterns.
Our platform tracks whether employees respond, what they say, whether they comply with requests, whether they attempt verification through other channels, and whether they report the suspicious message. All interactions are logged for analysis.
Close the Messaging App Security Gap
Messaging apps bypass email security controls. Test whether your employees can detect sophisticated
impersonation attacks on WhatsApp and other platforms.