Windows users are advised to update iTunes/iCloud/Bonjour as soon as possible, as there is a severe Ransomware risk to their systems caused by a vulnerability in the Windows version of iCloud.
If the latest update is not applied, attackers can exploit iCloud to install Ransomware (namely BitPaymer/iEncrypt) to hold user data and files hostage in exchange for payment.
Security researchers say this attack is hard to detect, which means it’s even more important to run any iTunes/iCloud updates if they have not been installed already.
More information here:
Official Apple information about this update:
Article written by:
Steven Hergert, Information Assurance Analyst