Users put their own networks in jeopardy

Sure, hackers pose a serious threat not only to individuals, but often to entire networks, as well. However, I've said it before: any organization's security policies are only as good as their employees' mindfulness. If your trusted users don't follow the company regulations, your company's network will be left riddled with security pitfalls, as described here in "How dangerous user behavior puts networks at risk". For instance, most routers arrive with security settings "off" by default - and must be activated intentionally. While this gets them up and running quickly (usually the end goal for impatient staff and even management) it leaves networks vulnerable. While just being vulnerable doesn't mean your network will necessarily be victimized right away, but the likelihood is undeniable. I've seen it firsthand lots of times; an employee doesn't draw the acceptable line between his home computer use and using the company system. Or, they'll just share passwords with coworkers and when they don't share them, they usually jeopardize the system by not updating the passwords often (I have to admit I'm guilty of that one myself). It's one thing to be lazy about your own system at home, but if you're trusted at work, an employee has a responsibility to uphold his employer's system as best he can. The bottom line is properly educating employees and network users and following through (regularly) to make sure they follow all guidelines.