For example, consider how incredibly stupid most Web filtering software is at deriving meaning from human-targeted content. The people who lost the most in the Emulex hoax were the ones with preprogrammed sell orders. Computer networks make it easier to start attacks and speed their dissemination, or for anonymous individuals to reach vast numbers of people at almost no cost. In the future, I predict that semantic attacks will be more serious than physical and syntactic attacks. It's not enough to dismiss them with the cryptographic magic wands of digital signatures , authentication , and integrity .
Amateurs tend to attack machines, whereas professionals target people.
Any solutions will have to target the people problem, not the math problem. The Digital Library is published by the Association for Computing Machinery.