【71-75】Without proper safeguards， every part of a network is vulnerable to a security breach or unauthorized activity from （71），competitors，or even employees. Many of the organizations that manage their own （72） network security and use the internet for more than just sending/receiving E-mails experience a network （73）— and more than half of these companies do not even know they were attacked. Smaller （74） are often complacent，having gained a false sense of security.they usually react to the last virus or the most recent defacing of their website. but they are trapped in a situation where they do not have the necessary time and（75）to spend on security.
