You may not be knowing that your iDevice is exposed to a big risk now after jailbreaking with Jailbreak Me.com.Actually,this jailbreak takes advantage of a vulnerable exploit in an iDevice. The new jailbreak JailbreakMe  functions  by exploiting a vulnerability in the iOS firmware.Comex used the same exploit to his advantage,as he injected a jailbreak payload into a PDF doc which gets executed on an iDevice once we 'slide to jailbreak' on JailbreakMe.com.So,a hacker can use this exploit for hacking into your iDevice.

Fortunately, a solution has sprouted up which  fixes this vulnerability. This is a new tweak available on Cydia called "PDF Loading Warner"(screenshot above) which adds another layer of security to your iDevice. Instead of downloading  PDF files automatically, this tweak will warn you if you want to download a specific PDF file. This means that, your iDevice will not be in a risk.

Note:If you have jailbroken your iDevice with JailbreakMe  then this tweak ought to be installed immediately!