Exploring Voice Cloning: Risks and Protective Measures for Organisations


In 2023, the financial sector reported a staggering 45% increase in voice-based security breaches (source: CyberSecurity Report). But what exactly is voice cloning, and why should organisations be concerned about it?

NormCyber’s Security Consultant, Ben Jones, sheds light on voice cloning technology, its risks, and protective measures for organisations.

What is Voice Cloning?

Voice Cloning Technology, also known as voice synthesis or voice replication, is the artificial duplication of a person’s voice using AI and machine learning.

This technology can recreate a person’s voice with remarkable accuracy, capturing unique characteristics such as tone, pitch, cadence, and even breathing patterns. Essentially, it requires only a few seconds of the target’s voice to create a nearly indistinguishable audio replica. The cloned voice can be manipulated to generate new speech, as well as express a range of emotions such as anger, fear, happiness, love, or boredom.

In recent years, Voice Cloning Technology has gained significant traction, with voice assistants like Siri and Alexa becoming household names. This trend indicates a future where voice interactions will play an increasingly central role in our daily lives.

What are the Organisational Risks of Voice Cloning?

While voice cloning technology holds promise for various applications, its misuse poses significant risks to organisations:

  • Cyber Attacks: Cyber criminals can exploit voice cloning to bypass voice recognition-based security measures, engage in social engineering attacks like voice phishing (vishing), or commit corporate espionage.
  • Impersonation: Attackers can impersonate trusted figures such as bank representatives or healthcare providers to manipulate victims into compromising security.
  • Emergence of VCaaS: Voice cloning as a service on the dark web poses a significant threat by enabling widespread misuse of the technology.

For businesses, these threats have substantial implications. Cyber security breaches can result in financial loss, theft of sensitive data, damage to the company’s reputation, and loss of customer trust.

Protecting Against the Threat

To mitigate the growing threat of voice cloning, organisations must take proactive measures. Below are several strategies to consider:

  • Multi-Factor Authentication (MFA): MFA requires multiple verification methods adding an extra layer of defence by. Even if a cyber criminal manages to replicate a voice, they must still provide additional verification elements to gain access.
  • Voice Biometrics: Voice biometrics play a crucial role in countering the risks posed by voice cloning technology. This technology utilises unique vocal characteristics to verify the identity of users. Voiceprints, like fingerprints, are distinctive to individuals, making them a robust defence against unauthorised access.
  • Anti-Spoofing Voice Technologies: One of the key challenges in mitigating voice cloning risks is preventing spoofing attempts. Anti-spoofing technologies employ advanced algorithms to detect artificial or cloned voices. They analyse voice characteristics that are hard to mimic, such as unique pronunciations or speech patterns to identify anomalies that may indicate a fraudulent voice.
  • Employee Awareness: Educating employees about the risks posed by voice cloning and other cyber security threats is essential. They should remain vigilant and promptly report any suspicious activities or attempts at manipulation.
  • Security Assessments and Updates: Given the swift evolution of cyber security threats, conducting routine audits and updates of the organisation’s environment is crucial. This ensures the identification and rectification of any vulnerabilities promptly.


As the lines between reality and fiction increasingly blur, voice cloning signifies both an exciting and precarious advancement in artificial intelligence and machine learning. Like any powerful tool, its morality is contingent on its application.

The onus lies on businesses to bolster their security measures and educate their personnel to minimise business risk. Employees should be encouraged to take a sensible-first approach. If something doesn’t feel right, even if it’s an order from the CEO – question it.

Ben jones

Written by Ben Jones

Ben Jones serves as an L2 Threat Detection & Response Analyst at NormCyber, where his expertise in security analysis, plays a pivotal role in assisting our clients. With a keen eye for detail and a proactive approach, Ben is well-equipped to confront threats head-on, ensuring our clients’ continued safety.