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Page 29 - Cyber Safety C-6
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    Public Wi-Fi

                     Public  Wi-Fi is the  opposite  of private  Wi-Fi. It is like  an open  park with
                     no fences or locks. These networks are accessible in busy places around
                     the world,  such as railway stations  (like RailWire Wi-Fi), airports, cafes,

                     shopping malls and libraries. Public Wi-Fi is usually free and may not need
                     a password or the password may be shared with everyone. This makes it
                     unsafe because someone nearby could try to see the information you send
                     online, just like someone reading your diary if you leave it open on a bench.

                        The latest Wi-Fi technology in 2025 is Wi-Fi 7, with a significant 2025 launch being the "Wi-Fi 7
                        Advanced Technology White Paper," released in August 2025 by Huawei, IEEE and other industry
                        pioneers.

                     Virtual Private Network (VPN)

                     A VPN (Virtual Private Network) adds extra safety when you are using the Internet. It is like a
                     secret tunnel for your data. When a VPN is turned on, everything you send and receive is protected
                     inside this tunnel, so others cannot spy on it.

                                           Identifiable IP and                 Encrypted data
                                           data not encrypted                  and hidden IP

                              Your device                            VPN                               Internet
                     For example, if you use free Wi-Fi at an airport, a hacker could try to see what you are doing

                     online. But if you are connected through a VPN, your data becomes scrambled (encrypted) and
                     your device’s IP address stays hidden. Many companies use VPNs so their employees can work
                     safely from home.

                                                                                  Devices and Networks: Your Digital Tools  27

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