Deepfake Defense in the Age of AI

The cybersecurity landscape has been dramatically reshaped by the advent of generative AI. Attackers now leverage large language models (LLMs) to impersonate trusted individuals and automate these social engineering tactics at scale.

Let’s review the status of these rising attacks, what’s fueling them, and how to actually prevent, not detect, them.

The Most Powerful Person on the Call Might Not Be Real

Recent threat intelligence reports highlight the growing sophistication and prevalence of AI-driven attacks:

• Voice Phishing Surge: According to CrowdStrike’s 2025 Global Threat Report, there was a 442% increase in voice phishing (vishing) attacks between the first and second halves of 2024, driven by AI-generated phishing and impersonation tactics.
• Social Engineering Prevalence: Verizon’s 2025 Data Breach Investigations Report indicates that social engineering remains a top pattern in breaches, with phishing and pretexting accounting for a significant portion of incidents
• North Korean Deepfake Operations: North Korean threat actors have been observed using deepfake technology to create synthetic identities for online job interviews, aiming to secure remote work positions and infiltrate organizations.

In this new era, trust can’t be assumed or merely detected. It must be proven deterministically and in real-time.

Why the Problem Is Growing

Three trends are converging to make AI impersonation the next big threat vector:

AI makes deception cheap and scalable: With open-source voice and video tools, threat actors can impersonate anyone with just a few minutes of reference material.

Virtual collaboration exposes trust gaps: Tools like Zoom, Teams, and Slack assume the person behind a screen is who they claim to be. Attackers exploit that assumption.

Defenses generally rely on probability, not proof: Deepfake detection tools use facial markers and analytics to guess if someone is real. That’s not good enough in a high-stakes environment.

And while endpoint tools or user training may help, they’re not built to answer a critical question in real-time: Can I trust this person I am talking to?

AI Detection Technologies Are Not Enough

Traditional defenses focus on detection, such as training users to spot suspicious behavior or using AI to analyze whether someone is fake. But deepfakes are getting too good, too fast. You can’t fight AI-generated deception with probability-based tools.

Actual prevention requires a different foundation, one based on provable trust, not assumption. That means:

• Identity Verification: Only verified, authorized users should be able to join sensitive meetings or chats based on cryptographic credentials, not passwords or codes.
• Device Integrity Checks: If a user’s device is infected, jailbroken, or non-compliant, it becomes a potential entry point for attackers, even if their identity is verified. Block these devices from meetings until they’re remediated.
• Visible Trust Indicators: Other participants need to see proof that each person in the meeting is who they say they are and is on a secure device. This removes the burden of judgment from end users.

Prevention means creating conditions where impersonation isn’t just hard, it’s impossible. That’s how you shut down AI deepfake attacks before they join high-risk conversations like board meetings, financial transactions, or vendor collaborations.

Detection-Based Approach
Prevention Approach

Flag anomalies after they occur
Block unauthorized users from ever joining

Rely on heuristics & guesswork
Use cryptographic proof of identity

Require user judgment
Provide visible, verified trust indicators

Eliminate Deepfake Threats From Your Calls

RealityCheck by Beyond Identity was built to close this trust gap inside collaboration tools. It gives every participant a visible, verified identity badge that’s backed by cryptographic device authentication and continuous risk checks.

Currently available for Zoom and Microsoft Teams (video and chat), RealityCheck:

• Confirms every participant’s identity is real and authorized
• Validates device compliance in real time, even on unmanaged devices
• Displays a visual badge to show others you’ve been verified

If you want to see how it works, Beyond Identity is hosting a webinar where you can see the product in action. Register here!

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Some parts of this article are sourced from:
thehackernews.com