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Hacker c th? kh?ng ch? m?i c click chu?t c?a ngu?i dng

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ketoan View Drop Down
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    Posted: 08 June 2009 at 12:31

Hacker c th? kh?ng ch? m?i c click chu?t c?a ngu?i dng

?nh:%20PCNews.
?nh: PCNews.

Th? thu?t clickjacking, t?c n?i dung trong du?ng link ngu?i dng b?m vo d b? thay d?i m h? khng hay bi?t, du?c gi?i b?o m?t dnh gi l m?t trong nh?ng nguy co m?i nghim tr?ng nh?t trn Internet.
"a s? cc cu?c khai thc (su, l? h?ng ph?n m?m...) d?u c th? du?c kh?c ph?c nhung clickjacking l?i kh d?i ph hon v n thu?c l?i thi?t k?", Jeremiah Grossman, Gim d?c hng b?o m?t M? Whitehat Security, cho hay.

Phuong php clickjacking (hijacking your click - kh?ng ch? c nh?p chu?t) du?c th?c hi?n nh? m?t iFrame cho php c?a s? trnh duy?t chia thnh nhi?u ph?n d? cc n?i dung khc nhau c th? hi?n th? trn t?ng ph?n d. Khi khch truy c?p b?m chu?t vo m?c ch?a iFrame d?c, cu?c khai thc s? di?n ra dng theo k? ho?ch c?a k? ch? muu.

K? x?u c th? ?n iFrame trong b?t c? du?ng link quen thu?c no trn trang web, t? dng tiu d? c?a bo The New York Times cho d?n nt "Bnh ch?n" trong di?n dn... nn m?i ngu?i khng th? pht hi?n ra.

Chuyn gia Grossman cho hay hacker c th? b m?t b?t webcam hay microphone nh?m theo di m?i ho?t d?ng c?a n?n nhn, hu?ng h? t?i trang web x?u d? t?i m d?c, ho?c tro d?i n?i dung du?ng link d? khi ngu?i dng click vo "Cancel" (h?y l?nh) th?c ch?t l?i c nghia l "Buy" (mua hng) trn website thuong m?i.

Ki?u t?n cng ny du?c x?p vo lo?i "nguy hi?m" v ngu?i s? d?ng g?n nhu khng th? lm g d? b?o v? h? (du?ng link trng hon ton v h?i). Microsoft v Mozilla cng th?a nh?n khng d? c gi?i php kh?c ph?c v?n d? nghim tr?ng ny.

L Nguyn (theo CNet)

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