This document discusses digital security and provides information on protecting computers and networks from online threats. It explains that computers connected to the wireless internet without firewall protection are vulnerable to hackers. It also discusses how digital security companies like Symantec and McAfee provide antivirus software, firewalls, and other tools to protect against viruses, spyware, identity theft, and other cyber threats. Maintaining up-to-date software and educating students on safe online practices are presented as important aspects of good digital security.