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Xoa sach du lieu rieng tu tren dia cung bo di |
Ngay nay, tin tac (hacker)
khong con phai ton nhieu cong suc de lap trinh ra nhung doan ma tinh vi co kha
nang danh cap thong tin ca nhan cua ban. Chung chi can dao quanh khu vuc cho
troi de mua ve nhung dia cung da qua su dung va tu do cung co the thu thap duoc
nhieu thong tin ca nhan quan trong do nguoi dung vo tinh de lai tren nhung dia
cung bo di nay. Thuc te cho thay cac hanh dong nhu dinh dang lai
hay phan vung lai cho dia cung khong the “nho co tan goc” nhung thong tin ghi
tren dia cung. Tuong tu, thao tac xoa hay di chuyen tap tin vao thu muc Recycle
Bin thuc ra chi la mot cach quan ly tap tin khac cua Windows. Do vay, de dam bao
tat ca thong tin quan trong cua minh tren dia cung duoc xoa bo hoan toan, ban
nen su dung mot cong cu chuyen dung hay thu thuat duoc de cap sau day:
Mot tien ich rat tot dung de xoa trang du lieu tren dia cung la DBAN (tai ve
mien phi tai find.pcworld.com/54672). Tien ich nay se thuc hien “xoa du lieu
theo dang khoi” (block-eraser), ghi de nhieu lan nhung du lieu “ngau nhien” len
moi khoi cua dia cung. DBAN co the tao dia mem khoi dong may tinh hay tap tin
ISO dung de tao dia CD khoi dong.
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Tinh nang ma hoa tich hop cua
Windows XP giu cac tap tin nhay cam luon an toan truoc va sau khi ban
xoa chung. |
Trong khi do, tien ich Secure Erase (find.pcworld.com/54638) su dung lenh Disk
Drive Secure Erase co san trong firmware cua nhung dia cung doi moi. Secure
Erase hoan tat toan bo tac vu xoa sach dia cung trong thoi gian chi bang mot nua
so voi cac ung dung co tinh nang tuong tu.
Ma hoa truoc khi xoa
Ma hoa tap tin tren dia cung la bien phap ngan chan cac hanh dong truy xuat bat
hop phap den nhung thong tin quan trong, nhung ban cung co the loi dung tinh
nang nay de chac chan cac tap tin ma minh da xoa khong the duoc “khoi phuc” lai
nguyen ban. Neu ban ma hoa mot tap tin truoc khi xoa thi ai do voi tien ich khoi
phuc du lieu van co the cuu lai phien ban ma hoa nay nhung khong the giai ma
chung. Khong co khoa giai ma, du lieu cua ban se luon an toan.
De su dung tien ich ma hoa trong Windows XP, ban nhan chuot phai vao tap tin hay
thu muc muon ma hoa, chon Properties, sau do trong cua so Properties ban nhan
Advanced, danh dau chon muc Encrypt contents to secure data, cuoi cung la nhan
OK. (Hinh 1). Ban co the ma hoa bat cu tap tin nao, tru cac tap tin he thong
(system file). Khi mot thu muc nao do da duoc ma hoa thi khong chi tat ca tap
tin va thu muc con hien co duoc ma hoa ma nhung tap tin moi tao ra sau nay cung
se duoc ma hoa.
Windows XP tu dong tao ra mot khoa giai ma duy nhat neu ban su dung tinh nang
nay. Tuy nhien, neu ban go bo cai dat Windows XP ma khong sao luu cac khoa nay,
cung nhu khong de lo chung thi khong ai (ke ca chinh ban) khong the giai ma
nhung tap tin tren. Neu ma hoa du lieu theo cach nay, ban khong can su dung mot
cong cu xoa an toan nua, tat ca nhung gi can lam la nem dia cung vao sot rac.
Theo PC World VN
Article source http://w4rum.com/681.t
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| [By Cao Tan Kiet] [03/Mar/07] |
