● Secure Your WiFi

　　It's fairly easy for potential criminals to gain access to your information if they're able to share your connection — that's why you want to be careful when using public WiFi. Even though you put security measures into place a couple of years ago, it's a good idea to refresh your settings.

　　● Use passwords

　　What you've heard is true: Passwords should use a variety of special characters, numerals, letters, and cases when possible.

　　● Check the shopping security

　　Take care when shopping online. Always check the security symbols when using an online site for shopping. If the lock icon encryption (加密)

　　is not there, do not give out credit details. Also, check that the site is legal — never go to a site from a random e­mail and start shopping online.

　　Keep a separate credit card just for online shopping. This will make it easier to cancel if something bad does happen and your other credit card for “in real life” can still be used uninfluenced.

　　Don't store information on any store's website. It may be convenient but it's also a possible loss to you if the site is hacked.

　　本文是一篇说明文，讲述的是在当前信息社会里，如何确保自己的信息不被泄露，以保证自己的生活及财产不受到影响。

　　1．This passage is mainly about

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