New intrusion tolerance software fortifies server secrurity

In spite of increased focus and large investments in computer security, critical infrastructure systems remain vulnerable to attacks, says Arun Sood, professor of computer science at George Mason University. The increasing sophistication and incessant morphing of cyber-attacks lend importance to the concept of intrusion tolerance: a system must fend off, or at least limit, the damage caused by unknown and/or undetected attacks.