Mot ket qua kiem tra cua Trung tam An ninh mang Bach Khoa
(BKIS) da gay bat ngo, do la su lo la voi an ninh mang cua hang loat cong ty
chung khoan. Trong so 22 website dang hoat dong cua cac cong ty chung khoan Viet
Nam duoc khao sat, co toi 12 website (chiem 54%) ton tai lo hong nghiem trong co
the bi hacker loi dung tan cong chiem quyen kiem soat bat ky luc nao.
Voi nhung lo hong nay, hacker co the thay doi thong tin ket qua cac giao dich,
sua chi so chung khoan, dua cac thong tin that thiet ve thi truong tren cac
website do. Neu khong duoc phat hien kip thoi, ke xau co the loi dung gay su
bien dong tren thi truong chung khoan von dang rat “nong” de truc loi va nhieu
nha dau tu se phai chiu thiet hai.
Hien nay Bkis da gui cong van canh bao va huong dan xu ly toi 12 cong ty noi
tren.
Theo BKIS, de thuc su co mot he thong mang dam bao an ninh, cac cong ty can phai
dua ngay cac yeu to an ninh vao trong thiet ke cua he thong mang, can co ngay
cac quy trinh van hanh dam bao duy tri muc do bao ve da duoc thiet lap. Tot nhat
la thue tu van chuyen nghiep va ap dung tieu chuan ve quan ly an ninh thong tin
ISO 27001.
 Trong
thang qua con so cac website cua Viet Nam bi tan cong cung that dang bao dong.
Hon 100 website nam tren 2 may chu hosting bi hacker nuoc ngoai tan cong thay
doi giao dien. Nguyen nhan la do quan tri phan quyen may chu khong tot, nen tu
mot website co lo hong va bi kiem soat, hacker co the de dang nam quyen dieu
khien tat ca cac website con lai tren cung may chu do.
Trong thang 3/2007, so luong may tinh Viet Nam bi nhiem virus la 2.668.000. So
luong virus moi xuat hien trong thang la227 virus. Moi ngay, trung binh xuat
hien 11,35 virus. Virus lay lan nhieu nhat trong thang la Virus
W32.CTFMonF.Worm: Lay nhiem 80.850 may tinh.
Theo nhan dinh cua cac chuyen gia an ninh mang, so virus moi xuat hien trong
thang 3 tiep tuc tang manh. Rat nhieu may tinh tai Viet Nam bi nhiem loai adware
“tong tien” (adware la mot loai phan mem quang cao bat hop phap). Thu doan cua
nhung adware nay la hien len cac canh bao ve virus (popup) duoi dang cac thong
diep nhu “May tinh cua ban da bi nhiem virus” (“Your computer is infected”),
“Canh bao virus”(“Virus Alert”)…., dong thoi huong dan nguoi su dung mua phan
mem cua chung de diet virus.
Thuc chat day la nhung canh bao gia, muc dich de doa nguoi su dung, cac phan mem
nay khong he co kha nang quet virus tren may tinh. Adware thuong bam theo nhung
phan mem diet virus, diet spyware hay adware khong ro nguon goc tren mang hoac
“chui xuong” tu mot website doc hai.
Khi gap su co, rat nhieu nguoi su dung loay hoay tim cach tu xu ly trong khi
khong phai ai cung co chuyen mon, dieu nay dan toi su co bi phuc tap hoa len.
Tuy nhien, cach phong chong adware (hay virus may tinh noi chung) lai rat don
gian, chi can ban su dung mot phan mem diet virus tot, co kha nang tu dong cap
nhat thuong xuyen qua mang (liveupdate), kem theo su ho tro truc tiep tu cac
chuyen gia, moi van de ve adware (hay virus) se duoc giai quyet nhanh chong,
khong he phuc tap.
Theo VnMedia
Article source http://w4rum.com/1178.t
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