首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Passwords are everywhere in computer security. All too often, they are also ineffective. A good password has to be both easy to
Passwords are everywhere in computer security. All too often, they are also ineffective. A good password has to be both easy to
admin
2018-05-18
56
问题
Passwords are everywhere in computer security. All too often, they are also ineffective. A good password has to be both easy to remember and hard to guess, but in practice people seem to pay attention to the former. Names of wives, husbands and children are popular. "123456" or "12345" are also common choices.
That predictability lets security researchers(and hackers)create dictionaries which list common passwords, useful to those seeking to break in. But although researchers know that passwords are insecure, working out just how insecure has been difficult. Many studies have only small samples to work on.
However, with the co-operation of Yahoo! , Joseph Bonneau of Cambridge University obtained the biggest sample to date—70 million passwords that came with useful data about their owners.
Mr Bonneau found some interesting variations. Older users had better passwords than young ones. People whose preferred language was Korean or German chose the most secure passwords: those who spoke Indonesian the least. Passwords designed to hide sensitive information such as credit-card numbers were only slightly more secure than those protecting less important things, like access to games. "Nag screens" that told users they had chosen a weak password made virtually no difference. And users whose accounts had been hacked in the past did not make more secure choices than those who had never been hacked.
But it is the broader analysis of the sample that is of most interest to security researchers. Despite their differences, the 70 million users were still predictable enough that a generic password dictionary was effective against both the entire sample and any slice of it. Mr Bonneau is blunt: " An attacker who can manage ten guesses per account will
compromise
around 1% of accounts. " And that is a worthwhile outcome for a hacker.
One obvious solution would be for sites to limit the number of guesses that can be made before access is blocked. Yet whereas the biggest sites, such as Google and Microsoft, do take such measures , many do not. The reasons of their not doing so are various. So it’ s time for users to consider the alternatives to traditional passwords.
People tend to use passwords that are_________.
选项
A、easy to remember
B、hard to figure out
C、random numbers
D、popular names
答案
A
解析
细节题。根据第一段第三句“A good password has to be both easy to remember and hard to guess,but in practice people seem to pay attention to the former.”可知,一个好的密码应该兼具容易记忆和难以猜测这两个特点,但在实际生活中,人们似乎更注重前者。换句话说,虽然密码的两个特点都很重要,但人们在使用中还是更注重更容易记忆,因此A选项easy to remember“易于记忆”符合题意,为正确答案。
转载请注明原文地址:https://kaotiyun.com/show/ZlVd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Futuristslovecomputers.Afterall,40yearsagoelectronicdigitalcomputersdidn’texist;todaymicrochipsastinyasababy’s
Thebiggestsafetythreatfacingairlinestodaymaynotbeaterroristwithagun,butthemanwiththeportablecomputerinbus
Someanimalsapparentlycanresistcancerbystrengtheningtheirimmunesysteminpreparationforwinter,JohnsHopkinsresearch
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Thereisnodenyingthatstudentsshouldlearnsomethingabouthowcomputerswork,justasweexpectthematleasttounderstand
Theautomobilehasmanyadvantages.Aboveall,itofferspeoplefreedomtogowhereverandwhenevertheywanttogo.Thebasicp
Wheneveradvertiserswantyoutostopthinkingabouttheproductandtostartthinkingaboutsomethingbigger,better,ormorea
Wheneveradvertiserswantyoutostopthinkingabouttheproductandtostartthinkingaboutsomethingbigger,better,ormorea
InBritain,winteristheseasonnotonlyforvisitstothetheatre,opera,concertsandballet,butalsoforshoppingorforsi
随机试题
Finally,thereissomegoodnewsforolderdads.Anewstudyshowsthattheirchildrenandevengrandchildrenmaygetahealthb
男性,28岁。因剧烈胸痛伴高热39℃1天半来诊,发病前2周曾有鼻塞流涕。体检:心界稍大,心前区可闻及摩擦音,胸片示左侧胸腔少量积液,超声心动图显示心脏正常,心包有少至中量积液。该患者最可能的诊断是
100ml新鲜冰冻血浆制备的冷沉淀,纤维蛋白原含量质量标准为
正常的脉象称为
甲公司拥有乙公司普通债权l00万元,现乙公司被宣告破产,管理人查明甲公司尚欠乙公司20万元运费未付。管理人预计破产清偿率为50%,甲公司要求抵销债务。债权人会议各方为甲公司的债权发生争执,以下表述中正确的是()。
钻孔灌注桩所用的水下混凝土须具备良好的和易性,坍落度至少宜为()mm。
科创板注册制发行中,不属于证监会职责的有()。
下列关于合同的债权转让的说法,正确的是()。
习近平总书记在十九大报告中指出,中国开放的大门不会关闭,只会越开越大。要以“一带一路”建设为重点,坚持引进来和走出去并重.遵循()原则,加强创新能力开放合作,形成陆海内外联动、东西双向互济的开放格局。
下列法律名言与法的特征对应正确的是()。
最新回复
(
0
)