信(xin)息(xi)系(xi)(xi)統(tong)(tong)安全(quan)(quan)風(feng)(feng)險評(ping)估是從風(feng)(feng)險管理角(jiao)度(du),評(ping)估系(xi)(xi)統(tong)(tong)面臨的(de)威(wei)脅以及(ji)脆弱性(xing)導致安全(quan)(quan)事件的(de)可(ke)能(neng)性(xing),并結合(he)安全(quan)(quan)事件所涉及(ji)的(de)資產價值來判斷安全(quan)(quan)事件一(yi)旦(dan)發生對(dui)系(xi)(xi)統(tong)(tong)造成的(de)影響,提出(chu)有針(zhen)對(dui)性(xing)的(de)抵御威(wei)脅的(de)方法措施(shi),將風(feng)(feng)險控制在可(ke)接(jie)受的(de)范圍內,達到系(xi)(xi)統(tong)(tong)穩(wen)定(ding)運行(xing)(xing)的(de)目(mu)的(de)。為(wei)保(bao)證(zheng)信(xin)息(xi)系(xi)(xi)統(tong)(tong)的(de)安全(quan)(quan)建設(she)、穩(wen)定(ding)運行(xing)(xing)提供技術參考。