Many top-rated items were dominated by brands with unrecognisable names, often with thousands of unverified reviewsAlamy

An Irish consumer group has warned customers to be wary of fake online product reviews that may be fraudulent.

European Consumer Centre (ECC) Ireland said they had received complaints from consumers who bought products online based on fake positive reviews.

Earlier this year, the UK consumer group Which? analysed the listings of hundreds of popular tech products on Amazon including headphones, dashcams and smartwatches, looking for signs of suspicious reviews.

Researchers found that many top-rated items were dominated by brands with unrecognisable names, which in many cases had thousands of unverified reviews.

Another indicator of inauthentic reviews was that many items received a high number of five-star ratings in a short space of time.

ECC Ireland told The Times: “We have received complaints from consumers…