When you connect to public wi-fi networks (for example, in a restaurant), your data is transferred unencrypted. This means that your logins, passwords, messages, and other sensitive information can be accessed by malefactors. Email addresses can be used for spam mailings and the contents of your social network page may be changed.
To intercept data, a hacker only needs to be within the range of the wireless network (unlike situations with cable networks when a physical connection is required).
If you use a home wi-fi network, check if name of the network (known as SSID, Service Set Identifier), and the complexity of the password.
If you have a common network name (such as "Home" or "ASUS") and a simple password, malefactors can easily get full access to your computer and personal data. Least dangerous cases are using your Internet traffic or disabling your router at any moment.
Often, rainbow tables are used for hacking passwords. Rainbow tables contain millions of most common SSIDs and passwords. If your SSID and your password are present in the table, then a malefactor can immediately get access to your network using special applications.
To enhance the security of you home network, choose an uncommon SSID and set a complex password.
For instructions on how to disable WPS (Wi-Fi Protected Setup), see the manual provided by the vendor of the router.
Change the password and the security type of the Wi-Fi network
How to create a strong password?
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