Có nên sử dụng mạng Wi-Fi không có mật khẩu?
Cập nhật: 11:26 30/11/2016 GMT+7
Câu trả lời là không nên. Báo cáo gần đây của Kaspersky đã chỉ ra rằng, 25% mạng lưới Wi-Fi trên toàn thế giới không có mã hóa hay mật khẩu bảo vệ.
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