Gottanapple, better get an antivirus real quick, encrypted data will be next, not just locking your device. The holes in cloud security are obvious to all but Apple themselves by the look of it.
Betta get a PC

If Apple can't get their own platform services secure, how vulnerable is your personal equipmentWhat can I do to prevent this?
If you have an iCloud account, change the password for your Apple ID. However, until Apple identifies and fixes iCloud security weaknesses, says Miller, disabling the Find My iPhone feature in your iCloud settings may be the only way to prevent this particular type of attack from occurring.
It's also worth keeping in mind some other more basic security measures, including:
•Make sure you only download from reputable websites, not third parties
•Be careful where you browse
•Install security software on all your devicesUnfortunately, none of these steps is failsafe. Malware is usually disguised as something more harmless, and in the case of this particular attack, it appears Apple's own iCloud interface -- surely a 'reputable' platform -- has played a role.