Small and medium-size businesses need to know how they stack up against the most current attacks. If you're relying on a Web host or ISP, be sure to choose a security- savvy vendor. Compare its offerings to those of other companies. When an employee leaves a company, remove the employee's network access immediately. Just as you ask departing employees to turn in their door keys, you should take away their network keys when they leave.
Disgruntled employees are the greatest threat to any system's security.
If you allow people to work at home, provide a secure, centrally managed server for remote traffic. Telecommuting increases worker satisfaction and productivity, but it also presents a security challenge. Update your Web server software regularly. Stay on top of security updates and patches, often available for free over the Web. Make sure you're always running the latest versions of software to stay ahead of hackers, who are certainly working to stay ahead of you.