The findings come as Digital Business Ireland (DBI) launches its new Digital Consumer Index, a regular barometer of consumer attitudes and behaviours in the digital economy.

The survey, carried out by Amárach Research, highlights that consumer reluctance is widespread after a breach, with the headline figure of 65 per cent rising sharply among older demographics.

Among those aged 55 and over, 81 per cent said they would not purchase again from such a retailer. By contrast, younger consumers show greater tolerance, with 54 per cent of 25-34 year-olds saying they would continue to buy.

These findings underline the heightened importance of cyber security in the digital economy, with the research suggesting that reputational damage following a data breach can have long-term commercial consequences.

As Cyber Security Month begins on 1 October, DBI is urging businesses of all sizes to prioritise investment in consumer trust and data protection.

Caroline Dunlea, chairperson of Digital Business Ireland, said: “These findings send a clear message — consumer trust is the bedrock of digital commerce, and once it is shaken by a data breach, it is incredibly difficult to win back.

“While younger shoppers may show more tolerance, the overwhelming majority of consumers want to feel confident that their personal data is safe. That confidence is not a ‘nice to have’ — it is fundamental to doing business online.

“Through the launch of our Digital Consumer Index, Digital Business Ireland will continue to track these shifting attitudes, providing timely insights to help businesses strengthen trust, improve security and meet consumer expectations.”