Around 12% of fraud cases reported in Ireland last year were related to messaging app WhatsApp, according to data from Revolut.

Consumers defrauded on WhatsApp lost an average of €1,200, nearly five times the average loss on Facebook (€260) despite the platform being encrypted, and scams on WhatsApp in Ireland rose 65% between the first and second halves of last year.

The surge shows that fraudsters are moving away from Facebook, with monetary losses on the platform falling 13% between H1 and H2.

Scams on Instagram also rose by 64% in the latter half of the year.

Ireland ranked only behind the UK for the highest volume of WhatsApp fraud per thousand customers last year among European countries, indicating that fraudsters most often target English-speaking countries.

“The illusion of security on encrypted messaging apps like WhatsApp is being ruthlessly exploited by criminals," said Woody Malouf, head of financial crime at Revolut.

"We’re seeing consumers increasingly letting their guards down to unsolicited messages received on WhatsApp more than any other platform, perhaps due to the belief that if someone has their number, they have a legitimate reason for getting in contact.

"The significant financial losses demonstrate the devastating impact these frauds are having on individuals. Encryption does not equate to immunity from scams. WhatsApp has a fundamental responsibility to protect its users, and their current approach is clearly failing.”

Malcolm Craig, general manager at the Ireland branch of Revolut Bank, added: “We know how easy it can be to unwittingly fall for a scam via more personal messaging platforms such as WhatsApp.

"Somebody having your phone number can often make you feel more confident to proceed but be wary, particularly in local community group chats.

"The protection of our customers’ funds is our utmost priority and we strongly urge people to recognise the threat that unsolicited messages on WhatsApp can pose.

"Equally, Revolut will never contact you outside of our secure in-app chat without first confirming with you via the app itself.

"If you’re in doubt, immediately contact Revolut Support, which is available 24/7.”

Revolut claims to have prevented €700m in potential fraud last year. The company has more than 3m customers in Ireland.

(Pic: Supplied)