Using public computers in libraries, Internet cafes, or Wi-Fi hotspots is quick, cheap, and convenient. But is it really safe to use these computers?
The safety of public computers largely depends on how users interact with them. Here are eight essential tips for safer use of public computers:
1. Use Anti-Spyware Software
Download anti-spyware software like X-Cleaner from Xblock.com. This software is compact and can be run directly from a floppy disk or USB without installation. It’s a good idea to use anti-spyware tools to scan public computers before use.
2. Do Not Save Login Information
Instead of closing the browser window or typing another website address, log out of the website by clicking the logout button or link. This limits the chances of other users accessing information on the site you just visited.
Many programs, especially messaging applications like Yahoo Messenger, MSN, and AOL, have automatic login features that save usernames and passwords, making it easier for users. However, this feature is only beneficial when using your personal computer; it poses significant risks when using public machines. Always disable this feature when using public computers.
3. Protect Your Passwords
Web browsers have the ability to remember passwords. Before surfing the web, if you are using Internet Explorer, go to Tools -> Internet Options, then in the Content tab, click AutoComplete and uncheck all options.
Once done, select Tools->Internet Options, go to the Content tab, click AutoComplete, and then select Clear Forms and Clear Passwords to delete all saved passwords and data.
Keylogger software can easily capture your passwords. However, they cannot record your password if you copy and paste each character into the password field. For example, if your password is “gh68@”, copy each character ‘g’, ‘h’, ‘6’, ‘8’, ‘@’ from a separate source and paste them into the password field. Although it may be a bit cumbersome, it is much safer.
4. Do Not Display Sensitive Information on Screen
Do not allow the computer to display sensitive information such as personal data, bank account numbers, or credit card details. If you need to step away for a moment, close all application windows and log out of any windows containing sensitive information.
5. Clear All Traces
After using a public computer, be sure to delete all temporary files and the History list in Internet Explorer.
To delete temporary files and History in IE, follow these steps:
– In Internet Explorer, select Tools -> Internet Options
– In the General tab, click Temporary Internet files -> Delete Files, and then click Delete Cookies.
– Under the History section, click Clear History.
6. Do Not Rely Too Much on Encryption
There are many encryption software options available today, which can be used to encrypt emails. However, these programs only encrypt messages once they are ready to be sent. This is rather late if a keylogger has already been installed on the machine. It will record all passwords and the content of your emails, sending them back to the keylogger installer without the user’s knowledge.
7. Be Aware of Your Surroundings
Since there is information suggesting hackers can use digital means to monitor users and steal passwords, we should not overlook traditional forms of attack. Pay attention to your surroundings and be aware of those sitting next to you whenever you enter a password.
8. Do Not Enter “Sensitive” Data on Public Computers
The above methods can help you defend against common hacker behaviors when using public computers. However, hackers or professional thieves may use keylogger software to steal information, emails, etc. The tools they use can easily disable your defenses and extract your information even after you have deleted all related data.
Therefore, to ensure your safety, avoid entering credit card numbers or any financial or sensitive information into public computers. This is the safest approach for you.
Minh Phúc
