💨 Abstract

Sainsbury’s customers are advised to lock their Nectar cards to prevent scammers from stealing their points. Despite introducing a lock feature in February, many shoppers are still experiencing thefts, particularly with balances meant to be saved for Christmas. Experts recommend frequent balance checks and activating the account lock. Sainsbury’s has refunded some stolen points but is urged to better inform customers about protection measures. The lack of ID checks and a potential brute-force attack vulnerability contribute to the issue.

Courtesy: Katie Boyden