South Korea's financial sector has been targeted by what has been described as a sophisticated supply chain attack that led to the deployment of Qilin ransomware. "This operation combined the capabilities of a major Ransomware-as-a-Service (RaaS) group, Qilin, with potential involvement from North Korean state-affiliated actors (Moonstone Sleet), leveraging Managed Service Provider (MSP) compromise as the initial access vector," Bitdefender said in a report shared with The Hacker News. Qilin has emerged as one of the most active ransomware operations this year, with the RaaS crew exhibiting "explosive growth" in the month of October 2025 by claiming over 180 victims. The group is responsible for 29% of all ransomware attacks, per data from NCC Group. The Romanian cybersecurity company…