Basic Computer Security/General Security and Passwords
The Golden Rule of Security 
Convenience increases risk.
Saving passwords, sharing passwords, using easy-to-remember passwords, and using the same password for everything are all convenient, and all expose you to a greater security risk. Accepting every cookie on the web, opening files without virus scanning them first, and clicking blind links are all convenient, and all expose you to a greater security risk.
Security is a critical issue that almost every one of us deals with. Most people surf the Internet for a number of things, like getting information about a topic, checking email, shopping, reading, or even selling goods. The Internet has made all of these activities easier and faster to achieve with less time and effort. Still, this convenience does not come without a price.
Internet security is a concern for everyone who uses the Internet. How can you be sure that your identity, passwords, personal information, shopping information and credit card numbers are all protected and that they are not available to hackers and malicious users? Here are some tips that can help protect you online:
- NEVER give your username and password to anyone.
- Don't provide your email username and password to websites that will be able to log on to your account automatically. This is a big risk as personal information can be accessed through emails.
There are also a number of preventive measures that you can take to prevent the installation/invasion of keyloggers (programs that record what you type and send data off through the Internet without the user noticing) and Trojan Horses (software that appears innocent but actually allows unwanted access to your computer) onto your computer. These include:
- Install and keep up-to-date an antivirus program (there are a number of commercial and several free anti-virus programs around that will do a good job)
- Use a firewall (also several free, reliable ones around)
- Install and regularly run anti-adware/spyware scanners.
Having these utilities will vastly increase the security of your computer - but never rely solely on them. Behavior practices as discussed in the previous section are also essential to providing good security.
Password Policies 
Each organization that requires its users to use passwords to access services might enforce a password policy. Password policies have both positive and negative effects. On the positive side, they force users to pick "good" passwords (e.g., passwords of some minimum length, with certain types of characters - so that the search space is larger for a brute force attacker etc.). On the negative side, they might reduce the search space for a brute force attacker who knows the policy.
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