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Surge in Vishing Attacks: 442% Increase Reported

Surge in Vishing Attacks: 442% Increase Reported

First seen 15 Oct 2026, 23:39 UTC • •
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ThreatCluster AI
ThreatCluster •October 16, 2026 at 00:38 UTC
  • •Vishing attacks increased by 442% in H2 2024, with a doubling in H1 2026 compared to H2 2025.
  • •Major UK retailers faced significant financial losses due to vishing, with M&S losing £300 million.
  • •Deepfake audio technology is increasingly used by attackers to impersonate legitimate sources.

Vishing attacks have surged significantly, with CrowdStrike reporting a 442% increase in the second half of 2024. This rise in voice phishing exploits social engineering tactics, pressuring victims into revealing sensitive information. The first half of 2026 saw vishing attacks double compared to the latter half of 2025, indicating a growing trend. Major UK retailers like Marks & Spencer and Co-op suffered substantial losses from vishing attacks, with costs estimated at £300 million and £207 million, respectively. Attackers often impersonate IT help desks, leveraging deepfake audio technology to enhance their deception. Security experts emphasize the importance of employee training to recognize and respond to such threats effectively. Organizations are encouraged to establish clear protocols for information sharing to mitigate risks.

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Timeline

2026-10-12
CrowdStrike report on vishing attacks
CrowdStrike's report reveals a 442% increase in vishing attacks from H2 2024 to H1 2026.
Icaew
Recent
NCSC issues warning
The National Cyber Security Centre warned about criminals impersonating IT help desks to trick employees.
Icaew

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Common questions

What are the main tactics used in vishing?
Vishing primarily uses social engineering techniques, including impersonation and urgency, to manipulate victims.
How can organizations prepare against vishing?
Organizations should train employees to recognize vishing attempts and establish clear protocols for sharing sensitive information.
What impact have vishing attacks had on businesses?
Businesses, particularly in retail, have faced significant financial losses, with some estimates reaching hundreds of millions.