Users that are using Apple's iCloud are facing a significant increase of spam. Spam emails containing calendar invitations are automatically scanned by Apple's operating system and the invitations are popped up as a notification on phones or tablets. Users are also receiving spam invitations to edit reminders and view photo groups, reports the Telegraph. While spam emails can easily be ignored, or blocked, problematic invitations are not as easy to deal with. The users should not reject them because even this action notifies the spammer that the iCloud account is active. Apple works on issuing an official fix. Various Internet resources offer a guide with temporary solutions. However either solution has its drawbacks.