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
24
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 provides devices that are able to distinguish incidental radio interference from targeted jamming attacks.
选项
答案
F
解析
转载请注明原文地址:https://kaotiyun.com/show/osZ7777K
0
大学英语四级
相关试题推荐
A、College.B、Highschool.C、Sportsevent.D、Park.C细节辨认题。根据短文第一句Whenyougotoacollegeorhighschoolsportsevent,youcansee
Forthispart,youareallowed30minutestowriteashortessaybasedonthepicturebelow.Youshouldstartyouressaywitha
Bilingual(双语的)educationinschoolshaslongbeenapoliticalhotpotato—itwasbannedinCaliforniabya1998ballotmeasure,wh
Accordingtosociologists,thereareseveraldifferentwaysinwhichapersonmaybecomerecognizedastheleaderofasocialgr
A、Tocollectdataonsourcesofpollution.B、Toidentifypollutioninriversandlakes.C、Tohelpcontrolenvironmentalpollutio
A、Unemploymentbringsbadfeelings.B、Unemploymentbringsgoodfeelings.C、Oneshouldtrytomakethebestofunemployment.D、Un
A、Lawsaboutcomputercrimesareimperfect.B、Therearemanypotentialcriminalshidinginthebank.C、Computercrimescommitted
EducationStudyFindsU.S.FallingBehind[A]TeachersintheUnitedStatesearnlessrelativetonationalincomethantheirco
A、Twoofhisworkerswereinjuredatwork.B、Twoofhisemployeescommittedtheft.C、Someofhisequipmentwasdamagedinafire
A、Interviewingandrecruitingemployees.B、Directingpersonnelevaluation.C、Buyingandmaintainingequipment.D、Drawingupplan
随机试题
如果仅为申请施工临时用电,施工临时用电结束或施工用电转入建设项目电力设施供电,则()应及时向供电部门办理终止用电手续。
Isupposethatthemostbasicandpowerfulwaytoconnecttoanotherpersonistolisten.Justlisten.Perhapsthemostimportan
患者,女,40岁。呕吐痰涎,伴头晕、胸痞、心悸,舌苔白,脉滑。治疗除取主穴外,还应加
某城市道路工程,项目经理部技术负责人主持编写了项目质量计划,该质量计划体现了质量管理人员的过程控制,在质量计划的实施过程中,项目经理定期组织项目技术负责人验证质量计划的实施效果,对项目质量控制中存在的问题和隐患提出解决措施。工程施工后,该项目内部质
甲公司20×3年财务报表于20×4年4月10日对外报出。假定其20×4年发生的下列有关事项均具有重要性,甲公司应当据以调整20×3年财务报表的是()。
我国大陆海岸线纵跨()三个气候带。
根据下列资料,回答下列问题。2017年1~8月,W省完成民间固定资产投资(以下简称民间投资)10287.23亿元。同比增长12.6%,比全国民间投资增速快6.2个百分点,比上年同期快10.2个百分点.比上半年和一季度分别加快1.1个和6.0个百分点。1
FTP客户端登录到FTP服务器,并下载了一个文件,请问这个过程中需要建立TCP连接和断开TCP连接的次数分别是()。
服刑人员服刑期间,如果有重大立功表现的,应当减刑。其中,“重大立功表现”是指()。
Insuranceisthesharingof【C1】______.Nearlyeveryoneisexposed【C2】______riskofsomesort.Thehouseowner,forexample,know
最新回复
(
0
)