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Bao dong ty le nhiem bot, Trojan nguy hiem

Nhung so lieu thong ke moi nhat tu Microsoft cho thay Trojan cua sau va bot thuc su la hiem hoa kinh khung cho nguoi su dung Windows.

Tuy nhien, ty le nhiem rootkits dang tren da di xuong, nhieu phan la do cac ung dung bao mat da duoc cap nhat them tinh nang chong rootkit.

Trong 6 thang dau nam 2006, Microsoft da phat hien thay hon 43000 bien the cua bot va Trojan cua sau dang kiem soat hang trieu may tinh bi hijack. Chung hop thanh mang luoi botnet mang ve bon tien cho hacker.

Trong so 4 trieu may tinh duoc cong cu xoa malware (MSRT) cua Microsoft don dep, co toi qua nua chua it nhat la mot Trojan cua sau. Tuy ti le nay kha cao song Microsoft van khang dinh da giam so voi nua cuoi nam 2005 (68%).

Mac du rootkit gay ra kha nhieu vu rinh rang tren mat bao vao cuoi nam 2005 song day khong phai la mot nguy co lon voi nguoi dung. "So vu tan cong cua rootkit da giam 50%, day ma mot xu huong can theo doi them", ban bao cao cho biet.

Khong co gi ngac nhien khi Microsoft nhan dinh ky thuat "tan chuyen" cua hacker dang ngay mot "cao tham". Chung da su dung rat nhieu thu thuat lam quen, goi chuyen, cau khach bang email va qua mang P2P de cau nguoi dung.

MSRT duoc phat hanh lan dau tu thang 1/2005, hien dang duoc su dung trong hon 290 trieu may tinh ca nhan. Trong suot nua dau 2006, cong cu nay da chay hon 1,6 ty lan.

Mot so ket luan dang chu y:

Trojan cua sau: Nua dau nam 2006 chung kien so luong Trojan moi dang ke. Phan lon thuoc ve cac ho bot, chang han nhu Win32/Rbot va Win32/Sdbot. Truoc su canh giac ngay cang cao cua nganh bao mat, chu nhan cua cac mang bot khong ngung tao ra va phat tan nhung bien the Trojan moi nham duy tri mang luoi cua minh va de tranh bi cac cong cu diet malware phat hien.

Phan mem danh cap mat khau va theo doi ban phim: Chiem thu hai trong danh muc malware dong dao nhat, xet ve so luong cac bien the. Mac du hinh thai malware nay ton tai tren pham vi toan cau, song mot so luong lon cua chung duoc xuat phat tu Brazil. Vai ngan bien the moi cua ho Win32/Banker va Win32/Bancos da duoc phat hien tai day trong 6 thang dau nam 2006. Chung chu yeu su dung tieng Bo Dao Nha tren giao dien cua minh va chu yeu phuc vu danh cap thong tin tai khoan ngan hang.

Phan mem download: Chiem thu ba trong danh sach malware nhieu nhat. Ke tan cong thuong su dung chung de copy ve may nan nhan nhung file can thiet de co the hoan tat viec hack va kiem soat he thong. Ngoai ra, phan mem download con phuc vu dac luc viec phat tan spyware va adware.

Sau: Cac ho sau tuy pho bien nhung lai it bien the. Cac loai sau email hang loat tiep tuc hoanh hanh tren pham vi toan cau.

Theo eWeek

Article source http://w4rum.com/234.t

[By Phan Vien] [10/Oct/06]
 
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