The "stack smashing" technique is the most common way used in exploits to break the security of programs. It is based on sending an unexpected amount of input data to a program causing a buffer overflow that allows the attacker to make the program execute arbitrary assembler code which can garant to him the access to the system, destroy the system files or do anything else.
Stack Shield is a tool for adding protection to programs from this kind of attacks at compile time whitout changing a line of code. Stack Shield uses a more secure protection system than other tool like Immunix Stack Guard. Stack Shield is designed to support the GCC under a Linux Intel 386 class platform.
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