Defensive Publications are a method for the open source community to prevent the issuance of low quality software
patents. These publications serve as evidence to disclose to the examiner what is new and innovative within the
technology. Through Linux Defenders, developers collaborate with our team to ensure that these publications are
effective in protecting the freedom to create, invent and operate.
April 26, 2011
Method for Detection of Tampering with System Password Files
Virtually every operating system utilizes several methods to prevent unauthorized access to the system. While these methods differ in implementation and effectiveness, virtually every publicly utilized computer is secured by a password that restricts access to specific user accounts on that machine.