A cyberattack on Poland's largest convenience store chain, Żabka, has exposed internal company systems after attackers allegedly stole corporate data through a third-party contractor's account. According to Żabka's statement, payment systems, transaction data, the Żappka loyalty app, and day-to-day store operations were unaffected. The disclosure came after previously unknown hackers advertised what they claimed was stolen Żabka data for sale on a cybercrime forum for €5,000 ($5,800). The incident became public after Polish cybersecurity outlet Niebezpiecznik reported that hackers had posted samples of the allegedly stolen data online. Those claims have not been independently verified, and Żabka has not confirmed the nature or volume of any stolen data.