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ZyWALL 10 Internet Security Gateway
What Is a Firewall? 13-11
8. Change your passwords regularly. Also, use passwords that are not easy to figure out. The most difficult
passwords to crack are those with upper and lower case letters, numbers and a symbol such as % or #.
9. Upgrade your software regularly. Many older versions of software, especially web browsers, have well
known security deficiencies. When you upgrade to the latest versions, you get the latest patches and
fixes.
10. If you use “chat rooms” or IRC sessions, be careful with any information you reveal to strangers.
11. If your system starts exhibiting odd behavior, contact your ISP. Some hackers will set off hacks that
cause your system to slowly become unstable or unusable.
12. Always shred confidential information, particularly about your computer, before throwing it away. Some
hackers dig through the trash of companies or individuals for information that might help them in an
attack.