Securing software with automated functional diversity

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Computer security remains a ongoing challenge for most computer users. Existing technologies such as network firewalls, virus scanners, and automated software updates defend against many attacks. Despite this, virtually every computer connected to the Internet has the potential to be compromised at any time due to administrative error, user mistakes, and unpatched software vulnerabilities. As there is no "silver bullet" for computer security, this situation will continue for the foreseeable future. Thus, if we wish to secure the Internet, we need to develop defense strategies that can tolerate imperfections in our computer systems and in the humans who work with them.