The following steps can be used to make a computer more secure:

• Review your password policy. Make sure that no default passwords are being used.
• Install anti-virus software. Set up a schedule for updates/scans.
• Configure your operating system and software to automatically download and install critical security updates.
• Disable unnecessary services. Most of the time, services like SNMP are not necessary.
• Set an account lockout policy.
• Disable any guest accounts. Information can be found using guest accounts.
• Disable the default shares.
• Create a general user account and use it for everyday use rather than using an administrator account. When your account has Administrator privileges, any malware will also run with administrator privileges.
• Consider installing a personal firewall.
• Keep up to date with the manufacturer's security fixes.

Outcome

Your computer is more secure after following the general procedures above.