University of Colorado at Boulder faculty, staff and students now have access to one more tool in their fight against a daily deluge of computer viruses and worms. The campus has purchased and is making available antivirus software at no cost to all faculty, staff and students. Antivirus software is one of the most important security tools for warding off computer viruses and worms and the campus now has access to a leading software product for work and home use, said Dennis Maloney, Information Technology Services executive director.