 Cho du ban co la thien tai thi cung khong the tranh khoi it nhat mot lan that bai trong doi. Cac ky su mang cua chung ta thuong phai co nhung pham chat nhat dinh (nhu tri thong minh, kha nang hoc hoi…) moi du kha nang dap ung cong viec cua minh. Ho gioi giang, nhung doi khi cung gap phai mot so 'tai nan nghe nghiep' nhu cau chuyen cua mot ky su nguoi My duoi day.
Nho lai nam 1999, khi virus Melissa tung hoanh tren Internet, toi dang la ky su mang cho Controller o mien Tay rong lon. Chung toi gap kho khan thuc su voi Melissa. Ban co the con nho, Melissa la virus macro su dung co che mass-mailing (luong thu khong lo) de pha hoai cac dich vu thu dien tu va gui di tai lieu Word nhiem doc (mot so duoi dang kin). Doi khi no con lam bien dang file van ban hoac file hinh anh, pha hoai du lieu thuc thi. Chung toi co chuong trinh chong virus tren server va workstation. Nhung truoc khi hang cung cap phan mem anti-virus cua chung toi cung cap ban update tieu diet Melissa va mot tien ich loai bo no ra khoi cac may tinh bi tan cong thi moi su da roi. May man la rot cuoc chung toi cap nhat duoc phan mem bao ve va xoa sach cac may nhiem Melissa. Mac du vay chung toi van gap phai mot van de. Van phong co mot so may tinh di dong cung bi tan cong. Nhieu nguoi dung tu xa tham chi khong ngo ngang gi den viec update phan mem bao ve chong virus, hay thac mac vi sao ho nen lam nhu the. Vi the chung toi phai tan cong manh Melissa. Moi may di dong deu chua dung mot nguy co tiem an.
Nguoi chiu trach nhiem quan ly cac hoat dong tu xa da hoi toi cach thuc hieu qua nhat cho cac nhan vien cua co tu xoa sach virus tren laptop cua minh truoc khi chung xam nhap vao mang van phong. Dieu quan trong la phat trien duoc cach kiem tra cac may tinh da sach hoan toan virus hay chua.
Theo toi nghi, cach don gian nhat de lam la dat mot file Word da nhiem virus len dia voi ten I_am_the_virus-do_not_run_me.doc (Toi la virus - dung co chay toi.doc). Sau do viet mot file batch co nhiem vu copy file nhiem doc vao o cung. Khi ky hieu anti-virus duoc dat dung cho, phan mem diet virus se khong cho phep ban copy file. Trong truong hop nay file batch cua toi se gui cho ban mot thong bao: "Xin chuc mung, may tinh nay khong co virus Melissa". Neu copy thanh cong may se khong bi hai gi, vi nguoi dung thuc su chua mo file va file batch se gui thong bao: "Nguy hiem!nguy hiem! Ban phai lam sach may tinh nay ngay lap tuc".
Toi da chung minh va giai thich mot cach chinh xac hoat dong cua file batch nay cho nguoi dung dau bo phan tu xa. Cach thuc dua ra duoc chap nhan hoan toan va duoc nhan xet la chuong trinh kiem tra hoan hao. Ngay hom sau no duoc dem ra thuc hien luon.
Mot tuan sau toi phat hien ra mot phong hop da duoc tach rieng de dat cac file virus len dia. It nhat co hai phan ba nguoi dung tu xa bang cach nay hay cach khac da copy va mo file nhiem doc. Do do lay lan sang nhieu laptop khac, tham chi len mot vai server. That bai! truong nhom quan ly tu xa khong them noi chuyen voi toi. Con sep toi thi nghi rang toi chi la mot ga ngo ngan. Co the ong ta dung!
Toi da rut ra duoc mot so bai hoc tu that bai nay. Thu nhat, dung co nghi rang nguoi dung cuoi se theo huong dan cua ban tru phi ban co mat o do, bat ho lam theo dung nhung gi dat ra. Va thu hai, kha nang lua dao hoan toan co the xay ra khi thuc hien moi viec sai di ma khong co su ho tro cua ban, hay toi. T.Thu (Theo Infoworld) Article source http://w4rum.com/255.t
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