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
Can Burglars Jam Your Wireless Security System? A)Any product that promises to protect your home deserves careful examination. S
Can Burglars Jam Your Wireless Security System? A)Any product that promises to protect your home deserves careful examination. S
admin
2019-03-15
36
问题
Can Burglars Jam Your Wireless Security System?
A)Any product that promises to protect your home deserves careful examination. So it isn’t surprising that you’ll find plenty of strong opinions about the potential vulnerabilities of popular home-security systems.
B)The most likely type of burglary(入室盗窃)by far is the unsophisticated crime of opportunity, usually involving a broken window or some forced entry. According to the FBI, crimes like these accounted for roughly two-thirds of all household burglaries in the US in 2013. The wide majority of the rest were illegal, unforced entries that resulted from something like a window being left open. The odds of a criminal using technical means to bypass a security system are so small that the FBI doesn’t even track those statistics.
C)One of the main theoretical home-security concerns is whether or not a given system is vulnerable to being blocked from working altogether. With wired setups, the fear is that a burglar(入室盗贼)might be able to shut your system down simply by cutting the right cable. With a wireless setup, you stick battery-powered sensors up around your home that keep an eye on windows, doors, motion, and more. If they detect something wrong while the system is armed, they’ll transmit a wireless alert signal to a base station that will then raise the alarm. That approach will eliminate most cord-cutting concerns—but what about their wireless equivalent, jamming? With the right device tuned to the right frequency, what’s to stop a thief from jamming your setup and blocking that alert signal from ever reaching the base station?
D)Jamming concerns are nothing new, and they’re not unique to security systems. Any device that’s built to receive a wireless signal at a specific frequency can be overwhelmed by a stronger signal coming in on the same frequency. For comparison, let’s say you wanted to "jam" a conversation between two people—all you’d need to do is yell in the listener’s ear.
E)Security devices are required to list the frequencies they broadcast on—that means that a potential thief can find what they need to know with minimal Googling. They will, however, need to know what system they’re looking for. If you have a sign in your yard declaring what setup you use, that’d point them in the right direction, though at that point, we’re talking about a highly targeted, semi-sophisticated attack, and not the sort of forced-entry attack that makes up the majority of burglaries. It’s easier to find and acquire jamming equipment for some frequencies than it is for others.
F)Wireless security providers will often take steps to help combat the threat of jamming attacks. SimpliSafe, winner of our Editors’ Choice distinction, utilizes a special system that’s capable of separating incidental RF interference from targeted jamming attacks. When the system thinks it’s being jammed, it’ll notify you via push alert(推送警报). From there, it’s up to you to sound the alarm manually.
G)SimpliSafe was singled out in one recent article on jamming, complete with a video showing the entire system being effectively bypassed with handheld jamming equipment. After taking appropriate measures to contain the RF interference to our test lab, we tested the attack out for ourselves, and were able to verify that it’s possible with the right equipment. However, we also verified that SimpliSafe’s anti-jamming system works. It caught us in the act, sent an alert to my smartphone, and also listed our RF interference on the system’s event log. The team behind the article and video in question make no mention of the system, or whether or not it detected them.
H)We like the unique nature of that software. It means that a thief likely wouldn’t be able to Google how the system works, then figure out a way around it. Even if they could, SimpliSafe claims that its system is always evolving, and that it varies slightly from system to system, which means there wouldn’t be a universal magic formula for cracking it. Other systems also seem confident on the subject of jamming. The team at Frontpoint addresses the issue in a blog on its site, citing their own jam protection software and claiming that there aren’t any documented cases of a successful jam attack since the company began offering wireless security sensors in the 1980s.
I)Jamming attacks are absolutely possible. As said before, with the right equipment and the right know-how, it’s possible to jam any wireless transmission. But how probable is it that someone will successfully jam their way into your home and steal your stuff?
J)Let’s imagine that you live in a small home with a wireless security setup that offers a functional antijamming system. First, a thief is going to need to target your home, specifically. Then, he’s going to need to know the technical details of your system and acquire the specific equipment necessary for jamming your specific setup. Presumably, you keep your doors locked at night and while you’re away, so the thief will still need to break in. That means defeating the lock somehow, or breaking a window. He’ll need to be jamming you at this point, as a broken window or opened door would normally release the alarm. So, too, would the motion detectors in your home, so the thief will need to continue jamming once he’s inside and searching for things to steal. However, he’ll need to do so without tripping the anti-jamming system, the details of which he almost certainly does not have access to.
K)At the end of the day, these kinds of systems are primarily designed to protect against the sort of opportunistic smash-and-grab attack that makes up the majority of burglaries. They’re also only a single layer in what should ideally be a many-sided approach to securing your home, one that includes common sense things like sound locks and proper exterior lighting at night. No system is impenetrable, and none can promise to eliminate the worst case completely. Every one of them has vulnerabilities that a knowledgeable thief could theoretically exploit. A good system is one that keeps that worst-case setting as improbable as possible while also offering strong protection in the event of a less-extraordinary attack.
SimpliSafe’s device can send a warning to the house owner’s cellphone.
选项
答案
G
解析
转载请注明原文地址:https://kaotiyun.com/show/OzZ7777K
0
大学英语四级
相关试题推荐
A、Balancebetweenhumansurvivalandecology.B、Conflictbetweenlesslandandmoreproduction.C、Differencebetweenpresentand
A、Becauselivestockproductionishighlyefficient.B、Becausemorepeoplewillbecomewealthier.C、Becauseitmayhelpdoublefo
A、TSAagents.B、FBIagents.C、Thepolice.D、Passengers.A信息明示题。由TransportationSecurityAdministrationagentsfoundwhattheyde
A、TocontrolKidalairport.B、Toprotectthetown.C、ToprotectthecapitalBamako.D、TofightagainstIslamistmilitants.B细节推断
随着生活水平的提高,保健品(healthcareproducts)日益受到中国人的喜爱。人们花费大量金钱来购买能量饮料、维生素药片和美容饮品。这些保健品宣称含有抗氧化物(antioxidants),能使人增强体质、延缓衰老。然而,最近有研究表明抗氧化物
在中国,交通安全是一个难题。据公安部(theMinistryofPublicSecurity)统计,去年有6.2万人死于交通事故。最近出台的新交规(newtrafficregulations)正是改善交通安全的最新举措。新修订的交规大大加重了对
7月底,中国环境保护部(China’sEnvironmentProtectionMinistry)发布了今年上半年空气质量状况报告。报告称,除了拉萨(Lhasa)、海口、舟山和惠州四个城市,我国其他主要大城市的空气质量均未达标。造成这一结果的原因有很
A、Itsprotectionisoftenneglectedbychildren.B、Itcannotbefullyrestoredoncedamaged.C、Therearemanyfalsenotionsabou
随机试题
缺失,咬合关系正常,烤瓷修复时,选择瓷覆盖形式,正确的是
确定归经理论的依据是
患者男性,58岁。因转移性右下腹疼痛20小时伴发热、恶心、呕吐,以“急性阑尾炎”收住院。入院时患者呈急性面容,扶入病房,查体:体温38.9℃,右下腹压痛、反跳痛。属于主观资料的是
统计的作用不包括()。
房地产投资需要房地产估价师、会计师、律师等提供专业服务,以确保置业投资总体收益的最大化。()
监理规划中,严格事前、事中和事后的质量检查监督,属于质量控制的()措施。
单位存款人用于()的资金通常存入临时存款账户。
曲线f(x)=x3+ax和g(x)=bx2+c都过(-1,0)点,且在该点有公共切线,则a,b,c为().
电子政务的目标在于建设一个国家电子政务体系,将现有的和即将建设的各个政府网络和应用系统连接起来,同一相关的技术标准和规范,做到互联互通,构建一个统一的【 】。
Towriteashortpassageofabout100wordsin30mutes______(对于大多数学生来说不过是小菜一碟)intheirclass.
最新回复
(
0
)