Ransomware gangs are stuck supporting Windows XP
https://www.bleepingcomputer.com/news/security/windows-xp-makes-ransomware-gangs-work-harder-for-their-money/
A recently created ransomware decryptor illustrates how threat actors have to support Windows XP, even when Microsoft dropped supporting it seven years ago.
Windows XP reached its end of life on April 8th, 2014, and even though it no longer receives security updates, more people use XP than Windows Vista, according to StatCounter and BleepingComputer's website visitor stats.