信息系(xi)(xi)統(tong)(tong)(tong)安(an)全(quan)(quan)風(feng)(feng)險(xian)(xian)評(ping)估(gu)是從風(feng)(feng)險(xian)(xian)管理角度(du),評(ping)估(gu)系(xi)(xi)統(tong)(tong)(tong)面臨的(de)威(wei)(wei)脅以及脆弱性導致安(an)全(quan)(quan)事件(jian)的(de)可(ke)能(neng)性,并(bing)結(jie)合安(an)全(quan)(quan)事件(jian)所涉及的(de)資產價值來(lai)判斷(duan)安(an)全(quan)(quan)事件(jian)一旦發生對系(xi)(xi)統(tong)(tong)(tong)造成的(de)影響,提出(chu)有針對性的(de)抵御威(wei)(wei)脅的(de)方(fang)法(fa)措施,將風(feng)(feng)險(xian)(xian)控制在可(ke)接受的(de)范圍內,達到系(xi)(xi)統(tong)(tong)(tong)穩定運行(xing)的(de)目的(de)。為保證(zheng)信息系(xi)(xi)統(tong)(tong)(tong)的(de)安(an)全(quan)(quan)建設(she)、穩定運行(xing)提供技(ji)術(shu)參考。