A massive cyberattack on Swedish IT supplier Miljodata exposed personal data from up to 1.5 million citizens, prompting a national privacy investigation and scrutiny into security failures across multiple municipalities. BleepingComputer reports: MiljÃdata is an IT systems supplier for roughly 80% of Sweden's municipalities. The company disclosed the incident on August 25, saying that the attackers stole data and demanded 1.5 Bitcoin to not leak it. The attack caused operational disruptions that affected citizens in multiple regions in the country, including Halland, Gotland, Skelleftea, Kalmar, Karlstad, and Monsteras. Because of the large impact, the state monitored the situation from the time of disclosure, with CERT-SE and the police starting to investigate immediately. According to IMY, the attacker exposed on the dark web data that corresponds to 1.5 million people in the country, creating the basis for investigating potential General Data Protection Regulation (GDPR) violations. [...] Although no ransomware groups had claimed the attack when Miljodata disclosed the incident, BleepingComputer found that the threat group Datacarry posted the stolen data on its dark web portal on September 13. The leaked database has been added to Have I Been Pwned, which contains information such as names, email addresses, physical addresses, phone numbers, government IDs, and dates of birth.Read more of this story at Slashdot.