Linear Pseudorandom number generator (PRNG)
Understand what a random number is , how important the chaos is, and how to understand a sequence of numbers that seems to have no meaning.
exploit
Write on the Android Read-only file system
Hot news: You can change the android partitions to Read-Write so you can upload new file versions (eg. permissions.xml) .
Developing for Google Android – update the OS version
A tutorial on how to unlock your Android G1, how to upgrade the ROM version and how to get Root on your embedded linux box.
Bluetooth BlueJacking
A short article on BlueJacking, which is sending unsolicited messages remotely to Bluetooth enabled devices.