Dot kich Wi Fi De hon bao gio het

Ket noi Internet tai cac diem truy cap Wi-Fi ngay cang tro nen nguy hiem hon khi gioi tin tac dang ngam ngam tao ra cac cong cu dac biet, de dang lay cap cac du lieu truy cap, thong tin tai khoan cua nguoi dung.

Tai hoi nghi Black Hat to chuc o Las Vegas (My), cac chuyen gia an ninh da thao luan xung quanh van de nay.

Cac cong cu do Robert Graham, mot chuyen gia bao mat cua cong ty Errata Security, sang che, gom “Hamster” va “Ferret”, co the kiem soat moi hoat dong “luu thong” tai cac diem truy cap Wi-Fi cong cong. Khi nguoi dung da dang nhap vao cac trang webmail hoac cac site thuoc mang xa hoi ao, nhung cong cu nay co the cho phep tin tac lay cap cac file cookie.

Lay duoc cookie, ke pha hoai nghiem nhien co quyen truy cap vao cac tai khoan cua nan nhan.

Tuy nhien, theo Graham, nguoi dung van co mot so cach de chong do cac cuoc”tan cong” cua tin tac. Hacker se khong the thay doi mat khau va chiem quyen kiem soat tai khoan cua nguoi dung vi hau het cac trang web hien nay deu bat buoc nguoi su dung nhap lai mat khau cu truoc khi thuc hien bat cu thay doi nao. Va, mot so dich vu webmail, nhu Gmail, cho phep nguoi dung ma hoa tat ca cac du lieu gui den, gui di.

Cung tai hoi nghi, ong David Thiel, thuoc cong ty bao mat iSec Partners, cho biet gioi toi pham cong nghe cao dang nham vao cac dong may tinh giai tri vi nhung thiet bi nay dang “dinh” rat nhieu loi nghiem trong.

Tin tac co the loi dung nhung lo hong nay de dinh kem cac chuong trinh doc hai vao cac link tai bai hat, video de dot kich may tinh nguoi dung. Thiel cho rang, cac trang web chia se dang dung truoc bo vuc tham vi gioi tin tac dang ap u am muu tao nen “con hong thuy” cac file giai tri an chua virus doc lam “ngap lut” mang xa hoi ao.

S.H.

Theo BBC