网络密码:越复杂越好
Let me hazard (赌运气) a wild guess:the system of passwords you use on the Intemet-for accessing online banking,Email,shopping sites,Twitter and Facebook accounts-is a mess.You know perfectly well what you ought to be doing:for each site you visit,you should be choosing a different,complex sequence of letters,numbers and symbols,and then memorizing it.
2013-09-04（万方平台首次上网日期，不代表论文的发表时间）
共2页
18-19
