1. 网络安全英文摘要谁能帮我翻译一下
Network security is the network hardware, software and system data to be protected, not because of accidental or malicious reasons, suffered damage, alteration, disclosure, the system for normal operation and reliable, network services are not interrupted. Network security is the essence of their network information security. In the broad sense, all related to the network of information confidentiality, integrity, availability, authenticity and controllability of the related technology and theory are the network security research field. Network security is the one involved in computer science, network technology, communications technology, cryptography, information security technology, applied mathematics, number theory, information theory, such as the integrated multi-disciplinary subjects.
Network security as the specific meaning of "perspective" and change. For example: From the users (indivials, businesses, etc.) point of view, they want to involve the interests of personal privacy or commercial information transmission on the network by the confidentiality, integrity and authenticity protection, to avoid other people or against the use of wire-tapping, impersonation, tampering, repudiation, such as a means of violating the interests of users and privacy.
Key words:
Network security analysis,
Network encryption,
Information collection,
Internet Firewall
2. 网络安全英语怎么说
网络安全是指网络系统的硬件、软件及其系统中的数据受到保护,不因偶然的或者恶意的原因而遭受到破坏、更改、泄露,系统连续可靠正常地运行,网络服务不中断。那么你知道网络安全用英语怎么说吗?下面跟着我一起来学习一下吧。
网络安全的英语说法1:
]network security
网络安全的英语说法2:
cyber security
网络安全相关英语表达:
系统网络安全协会 SANS Institute
通信和网络安全 Telecommunications and Network Security
网络安全产品 network safety procts
网络安全的英语例句:
1. At last It'summarizes and expects E - Government network security system.
最后对 电子政务 网络安全进行 总结 和展望.
2. The first chapter summarize the network, networked instruments and network switch.
第一章概述了网络数据的隔离与网络安全,并给出了几大典型应用.
3. Other problems related to intranet security are also discussed.
同时对涉及网络安全的有关问题进行了讨论.
4. A firewall acts like a virtual security guard for your network.
防火墙类似于一个虚拟的网络安全守卫.
5. Rep: " It was a six - page letter on internet security. "
销售人员: “ 是一封关于网络安全的6页长的信. ”
6. An emergency response system is designed and its work mechanism is analyzed.
构建了一个网络安全应急响应系统,并对系统的工作机制进行了分析.
7. Lastly, elementary fulfillment of NSMS also explained this essay.
最后, 本文给出了网络安全监控系统的初步实现.
8. Other activities which harm the network are also prohibited.
(五)其他危害计算机信息网络安全的.
9. Its procts cover anti - virus , network security and hacker protection.
其产品覆盖 反病毒, 网络安全和黑客防卫.
10. The network security includes firewall, intrusion detection and hole scanning etc.
网络安全技术有:防火墙 、 入侵检测和漏洞扫描等.
11. But when we rejoice about it's expediency, the network security come closely.
然而就在人们为之欣喜的同时, 网络安全问题接踵而至.
12. Email filter is a very important subject in network security.
邮件过滤是当前网络安全中比较重要的一个学科.
13. The technique of Sniffer Discovery is a hard problem in network security.
嗅探器发现技术是网络安全中重要问题.
14. Data encryption is one of the key technologies in network security.
数据加密技术是实现网络安全的关键技术之一.
15. Introcing Intranet security resolvent's goal, principia, constitutes and keystone.
提出网络安全设计的目标 、 原则 、 组成部分及侧重点.
3. 求一篇关于介绍网络安全的英文文章,越长越好,详细些!谢谢
next and the joy of the game of livin
4. 关于网络安全英语短句
safe 英[seɪf] 美[sef]
adj. 安全的; 保险的,肯定的; 无损的; 提供保护的;
n. 保险箱,保险柜; 冷藏箱; 〈俚〉避孕套;
[例句]Officials arrived to assess whether it is safe to bring emergency food supplies into the city
官员们赶来评估向该市调拨紧急救援食品是否安全。
[其他] 比较级:safer 最高级:safest 复数:safes
The computer is one kind of tool, is uses to us, but not plays; The academic society uses the human is a smart person, will only play the human will be the stupid person, you may access the net, to look that the news, the understanding current event, will simultaneously raise itself to study using the network, but plays the game purely, is obtained the more network knowledge oneself. Although the network is a messenger, is also the good teacher and helpful friend who studies, but excessively many surfers can cause the vision to drop, the academic record drops; Serious also has the possibility to create is with one's family broken up and decimated!
电脑是一种工具,是给我们用的,而不是玩的;学会用的人是聪明人,只会玩的人则是愚蠢的人,你可以上网,看新闻、了解时事,同时培养自己利用网络来学习,而不是单纯地玩游戏,让自己获得更多的网络知识。网络虽是一个通信员,也是学习上的良师益友,但过多的上网会导致视力下降,学习成绩下降;严重的还有可能造成家破人亡!
Recently, the news that U.S attack on China's Internet is always exposed. And the question of how to stay online safely raises a lot of discussion in our country. As a result, in the era of rapid development of network, we must take measures to protect our security of privacy and property effectively.
最近的新闻都揭示了美国对中国网络的攻击。如何安全地上网在我国引起了大量的讨论。结果是在网络飞速发展的时代,我们必须要采取有效的措施来保护我们的隐私和财产安全。
From my perspective, in the first place, we should call attention to our personal information. Not only do we not offer them at random in some strange websites, but we need to distinguish right from wrong among the numerous websites. Furthermore, it is inevitable that some secure anti-virus soft wares can be installed. And it will make it possible for that network can run more steadily. In addition to doing some work by ourselves, the government needs to draw up some policies to preserve national cyber security. It involves probing for deeply rooted reasons, devising creative solutions, developing high-tech talents and strengthening the supervision.
从我的角度来看,首先,我们应该关注我们的个人信息。我们不仅不随随便便在一些奇怪的网站提供自己的信息,而且我们需要在众多的网站之间明辨是非。此外,安装一些安全的杀毒软件是必须的。这使得网络运行更加稳定。除了我们自己该做一些努力之外,还需要政府制定相关政策来保护国家网络安全。这就涉及到探究深层次的原因,想出有创造性的解决方案,发展高新技术人才、加强监管。
Although scientists still cannot overcome the problem completely, they are studying a great deal about how to protect our national cyber security. However, consciousness of cyber security should not decline. Only in this way, we just enjoy the convenience brought by the network.
尽管科学家仍无法完全克服这个问题,但是他们正在研究大量关于如何保护我们国家网络安全的办法。然而,不应该放松网络安全意识。只有这样我们才能享受到网络带给我们的便利。
Internet can be used for learning knowledge and it's richer than any library 网络可以用来 学习知识 并且它比任何一个图书馆里的知识都要丰富
It is a very valuable research tool 网络是个有价值的搜索工具
Another problem of the internet is the amount of pornography on it 另一个问题是网上有很多不健康信息
It allows Humans all over the world to keep in touch通过网络来自不同的地方的人也可以互相交流
the internet can play its part in informing us about what our own governments are doing通过网络我们可以知道我们的政府正在做什么
What one of your friends tells you might be more reliable than an internet site你的任何一个朋友告诉你的信息有可能比一个网站上的可靠.
internet give people many conveniences互联网给人带来许多便利
you can buy goods which you need without going to a supermarket or any shop ,but only by e-shopping你可以不用去商店或者超市就能直接通过电子购物而买到需要的商品
emails is another benefit the internet brings to us,especially for businessmen 电子邮件则是另一个由因特网带来的好处,特别是对于工作的人
7a6431333337623462Along with the time development, accessing the net already turned the extremely universal matter. No matter is alt or the child, so long as mentioning the computer, all think of internet. But, accessing the internet is advantageous ,but also has shortcoming.
I knew very many people access the net, mainly is for playing games, which is very bad for the study. Therefore, some people believed, the elementary and middle school students lack the self-control.
But,there are many people approving to accessing internet, why? Because internet can provide to the people very helps. First, the network looks like a library, we can look up very many materials easily,and it is quicker than the speed of consulting books; Next, we may read a richer news on-line; In addition, accessing the net also has other functions, for example, E-mail, telephoning on the net and so on.
Actually, accessing the net has its profit and the shortcoming place. We use it to open to expand the field of vision, the study knowledge, but must certainly grasp the discretion.
Strength alone knows conflict, weakneis below even defeat, and is born vanquished. -- Swetchine
只有强者才懂得斗争;弱者甚至失败都不够资格,而是生来就是被征服的。
The people who get on in this world are the people who get up and look for circumstances they want, and if they cannot find them, make them. -- Bernara Shaw
在这个世界上取得成就的人,都努力去寻找他们想要的机会,如果找不到机会,他们便自己创造机会。
Since twentieth Century, the rapid development of computer technology, especially the rapid development of Internet technology, has put the whole world even as a whole, so that the social development is inseparable from the information network. It constantly changing economic, social, cultural structure and operation mode, and the transmission of information relating to financial, science ecation, military and other fields, in to the people and the country brings convenient, efficient information sharing at the same time, but also to the security of network information has brought many problems. In today's international competitive situation, the network information security is more and more attention from all over the world. This article from the network information security problems and characteristics, the main techniques of network security, common network attack methods and countermeasures, the construction of network security and other aspects of the present stage of our country network information security problems and restricting factors and how from technology and management and other aspects the construction has the Chinese characteristic information security comprehensive security system, ensure our country network information security.
Key word
The network information security of network attack network ethics network security comprehensive security system
1. nothinask not what your country can do for you ,ask what you can do for your country.
2. in the world is impossible if you set your mind to do it.
3. never put off till tomorrow what you can do today.
4. He bites off more than he can chew.
5. To teach a fish how to swim.
6. The supreme happiness of life is the conviction that we are loved.
7. Cultured and fine manners are everywhere a passport to regard.
8. What you love on the swings you get back on the roundabouts.
9. No man lives without jostling and being jostled ,in all ways he has to elbow himself through the world giving and receiving offence.
10. Thought is the seed of action.
5. 谁能提供关于网络信息安全的书,本人是初学者,以后想从事相关的工作,想买些相关的书自学
实战网络安全——实战网络技术丛书 ¥30.40元
本书阐述了网络所涉及的安全问题,还通过实例、实训来增强读者的理解及动手能力。主要内容包括网络安全基础知识、物理与环境安全、操作系统安全、网络通信安全、Web安全、数据安全、病毒及其预防、黑客攻击与防范、防火墙技术及有关网络安全的法律法规。本书不仅?...
网络安全CISCO解决方案 ¥33.25元
虽然Cisco Systems公司通过推出Cisco Secure产品系列来帮助客户建立安全的网络,但到目前为止,国内尚没有使用cisco Secure产品系列来解决因特网安全性问题的出版物,本书的出版填补了这一空白。本书英文原版的作者都是具有高深资深的网络安全专家,其中主笔人Andrew ...
Microsoft,UNIX及Oracle主机和网络安全 ¥75.05元
本书凝聚了数十位权威的国际安全专家的实战经验和技术总结。它不仅提供了Windows系统、UNIX系统和Oracle系统的主机及网络安全解决方案,而且包括了企业的安全管理规范和原则;它既高屋建瓴地描述了企业内部网整体面临的安全威胁和漏洞,又细致地介绍了Windows,UNIX ...
黑客大曝光:网络安全机密与解决方案(第3版,1CD) ¥75.05元
本书从攻击者和防御者的不同角度系统地阐述了计算机和网络入侵手段以及相应的防御措施。学习本书中,可以研磨着名安全专家Stuart McClure,Joel Scambary和George Kurtz提供的最新的最为详细的渗透和攻击实例,并向他们学习如何一步步地保护系统。此外,书中还增添?...
MICROSOFF,UNIX及ORACLE主机和网络安全 ¥75.05元
本书凝聚了数十位权威的国际安全专家的实战经验和技术总结。它不仅提供了Windows系统、UNIX系统和Oracle系统的主机及网络安全解决方案,而且包括了企业的安全管理规范和原则;它既高屋建瓴地描述了企业内部网整体面临的安全威胁和漏洞,又细致地介绍了Windows,UNIX,O ...
网络安全概论——安全技术大系 ¥39.90元
本书全面系统地介绍了网络安全的概念、原理及体系架构,详细论述了密码技术、公钥基础设施(PKI)、特权管理基础设施(PMI)、网络层安全性问题,以及Web、电子邮件、数据库安全和操作系统的安全性问题,并对最新的防火墙技术、网络攻击技术和黑客入侵检测技术、计算机?...
网络安全实用教程 (第二版) ¥42.75元
本书介绍的知识可以保护您的数字化知识、数据和功能不被误用和篡改。本书详细介绍了防火墙实现方法、无线网络、桌面保护系统、生物识别技术和大量最新的核心安全措施。理解攻击的4种方式以及每一种攻击方式对机构造成的损害,有助于保护信息和系统的基本安全服务。通过?...
网络安全——公众世界中秘密通信 ¥42.75元
本书全面阐述了信息安全理论,全书共分五个部分,即密码学、认证、标准、电子邮件以及其他安全机制。其中,第一部分阐述了密码算法的基本原理以及各种经典的和现代的加密算法。第二部分介绍了如何在网络中证明身份、人在向设备证明自己的身份时可能碰到的问题、认证握手 ...
计算机网络安全 ¥17.10元
随着计算机网络技术的广泛应用和飞速发展,计算机信息网络已成为现代信息社会的基础设施。它作为进行信息交流、开展各种社会活动的基础工具,已深入到人们工作和生活当中。同时,计算机安全问题也随之日益突出,计算机病毒扩散、网络黑客攻击、计算机网络犯罪等违法事件 ...
移动网络安全技术与应用 ¥30.40元
本书从实际应用角度出发,先从整体上对移动网络、移动网络面临的安全威胁、移动网络相对于有线网络的特点等做了简要介绍,并给读者提供了必要的基础知识,然后从移动安全技术、移动安全攻与防、部署移动安全、移动安全应用四个方面对移动网络安全做了细致的描述和讨论。 ...
密码学与网络安全(影印版) ¥45.60元
本书清晰易懂地介绍了密码学和网络安全的基本概念和实际问题,探讨了加密、解密、对称和不对称密钥,详细分析和解释了各种主要密码算法,包括数据加密标准(DES),国际数据加密算法(IDEA),RC5,Blowfish,先进加密标准(AES),RSA,数字签名算法(DSA)等,并讨论了主要用?...
网络安全——公众世界中的秘密通信(第二版) ¥42.75元
本书全面阐述了信息安全理论,全书共分五个部分,即密码学、认证、标准、电子邮件以及其他安全机制。其中,第一部分阐述了密码算法的基本原理以及各种经典的和现代的加密算法。第二部分介绍了如何在网络中证明身份、人在向设备证明自己的身份时可能碰到的问题、认证握?...
计算机网络安全 ¥27.55元
本书以网络安全通常采取的安全措施(对策)为主线,系统地介绍了网络安全知识和技术,重点介绍了网络系统的安全运行和网络信息的安全保护,内容包括操作系统安全、数据库与数据安全、网络实体安全、数据加密与鉴别、防火墙安全、网络病毒防治、入侵检测与防护、黑客攻击及 ...
计算机网络安全 ¥27.55元
...
黑客大曝光:网络安全机密与解决方案(第5版) ¥74.10元
因特网是一个脆弱的生态系统,没有什么人能够确保赢得胜利。作为一家全球性的信息安全技术公司的总裁,我曾经亲眼目睹Nimda、Blaster和Fun Love等蠕虫像纳粹德国发动的闪电战那样洗劫了无数的公司。在这类攻击活动刚爆发时的关键而又混乱的几个小时里,全世界的信息安全 ...
密码学与网络安全 ¥40.85元
Atul Kahate在印度和世界IT业中已经有8年的工作经验,他取得了统计学学士学位和计算机系统专业的MBA学位。这是他撰写的第二部IT专着,他过去曾为Tata McGraw-Hill出版公司与他人合写了“Web Technologies -TCP/IP to Internet Application Architectures”一书。目前,?...
网络安全实用教程(第二版) ¥42.75元
本书介绍的知识可以保护您的数字化知识、数据和功能不被误用和篡改。本书详细介绍了防火墙实现方法、无线网络、桌面保护系统、生物识别技术和大量最新的核心安全措施。理解攻击的4种方式以及每一种攻击方式对机构造成的损害,有助于保护信息和系统的基本安全服务通过指?...
网络安全实用技术标准教程 ¥23.75元
本书详细阐述了计算机网络安全的相关机制,整体安全机制分为防御、攻击、网络安全管理和整体安全体系几个部分。第1部分从常见的防御机制出发,从网络安全产品入手介绍了防火墙、入侵侦测系统,同时从网络层次体系的角度出发,详细描述了网络层的协议、面临的攻击和相应?...
网络安全设计标准教程 ¥23.75元
本书详细叙述利用Windows Server 2003构建安全网络的基础知识。内容主要分为两部分:第一部分介绍网络安全和操作系统的基本概念,包括网络安全概论、网络攻击的目的、方法和原理以及操作系统概论和Windows Server 2003的简要介绍;第二部分详细介绍有关Windows Server 2 ...
网络安全——技术与实践 ¥46.55元
全书共分3篇15章。第1篇为网络安全基础篇,共3章,主要讨论了网络安全的基础知识,并从网络协议安全性的角度出发,阐述了当今计算机网络中存在的安全威胁;第2篇为保密学基础,共5章,较详细地讨论了网络安全中涉及的各种密码技术;第3篇为网络安全实践,共7章,主要介?...
网络安全与电子商务 ¥19.95元
本书从网络安全的概念和基本知识入手,介绍了网络及通信安全、黑客及其防范、病毒及其防治、防火墙和加密技术、数字签名与身份认证、操作系统与数据安全、安全电子交易协议和网络安全管理等内容。在编写体例方面,网络安全在前,电子商务安全在后,网络安全威胁在前,防 ...
Cisco 网络安全 ¥28.31元
实用的、权威的Cisco网络安全指南。本书是关于Cisco网络安全中关键要素的实现和配置的最实用、最方便的指南!资深网络安全顾问James Pike为Cisco安全产品的实现和配置提供了循序渐进的指南——包括使用PIX防火墙的深入介绍。 ...
计算机网络安全与管理 ¥31.35元
本书针对计算机学科的特点,主要介绍加密算法在该领域的基本实现和应用。书中不过多讲述原理,而是在综合介绍各种网络攻击和防范技术的基础上,进一步强调如何用动态的手段来解决动态发展的网络安全问题。所应用的管理手段包括对设备、技术、人员、业务等各个方面的 ...
计算机网络安全技术(第二版) ¥24.70元
本书是对第一版内容进行更新后形成的第二版。 本书详细介绍了计算机网络安全技术的基础理论、原理及其实现方法。内容包括计算机网络安全技术概论、计算机网络安全基础、实体安全与硬件防护技术、密码技术与压缩技术、数据库系统安全、网络存储备份技术、计算机 ...
家用电脑网络安全防护与隐私保护掌中宝 ¥9.50元
全书分为网络安全基础篇、网络防护实战篇和个人隐私保护篇。从家用电脑使用过程中经常碰到的各类问题着手,针对与网络安全相关的病毒、黑客、木马、邮件炸弹、个人隐私等内容进行详细介绍,并提出了各种相关的防范措施。
6. 国家网络安全宣传周英语作文
【 #英语资源# 导语】国家网络安全宣传周即“巧凳中国国家网络安全宣传周”,是为了“共建网络安全,共享网络文明”而开展的主题活动。2021年国家网络安全宣传周于2021年10月11-17日在西安举行。以下是 考搏春 网为大家精心整理的内容,欢迎大家阅读。1.国家网络安孝银旅全宣传周英语作文
Network, this familiar and unfamiliar new term, I don't know when it broke into our life. But there is no doubt that this unknown new thing has become an important play in our daily life. If you, as a teenager in the 21st century, know nothing about the Internet, it can only show that you are off track with the world and can't keep up with the fast pace of the trend of the times.
Indeed, the emergence of the network undoubtedly takes up people's excess time, facilitates people's daily needs, broadens people's horizons and enriches people's spare time after work. The advantages of the network are also numerous. We can see it from the above points. However, everything has two sides: good and bad. This double-edged sword makes us have to be vigilant. We might as well consider the network from another angle. It is not difficult to ask: what is the security of the network; What is the moral bottom line of the network? The question mark in front of us has enough weight to deserve people's good meditation: online games have made the academic achievements of many teenagers plummet, fall behind, and even embark on the road of crime. Many people become homeless and unemployed at home. At the same time, network deception is even more inhuman. In order to make huge profits, some criminals do not hesitate to sacrifice everything of others to meet their personal interests. As a result, neither side has a good ending. These are the facts that happen around us. It can be imagined that the prospect of the network is not optimistic. Without security and moral behavior in the network, how can people talk about honesty and trustworthiness? Even in the network of the virtual world, it is also against morality and ethics.
Therefore, there is the ancient saying: "if you have something, change it, and if you don't have something, crown it." this classic famous sentence, if there is a mistake, we are not afraid, as long as we correct it.
In the eyes of thinkers: the network itself is all kinds, true and false, good and bad, gold and feces. The Internet is a big space, and people's posture in it is also diverse. The people who make the network are sages, the people who refuse the network are idiots, the people who listen to the network are ecators, the cognitive scholars who splice the network, the people who despise the network are Philistines, the people who abide by the network are fools, and the people who use the network are wise.
In the eyes of the judge: everyone should have a balance in his heart, an eternal left-right balance to measure every bit of his heart.
In my heart: in fact, I know what I think, do and know best. As for what you should do next, it depends on whether the light in your heart can illuminate the moral bottom line in your heart.
Finally, it is still the sentence "we fly together with the network, and morality is the same." we don't want to do well, but one sentence: a clear conscience!
2.国家网络安全宣传周英语作文
The 21st century is a new century in which science and technology are widely used. Nowadays, what "no one knows, no one knows" belongs to "computer". With a "computer fever", what it brings is the well-known Internet!
The computer is a great invention, and the network, which has only appeared in recent ten years, has made amazing progress. For example, the network can help you in food, clothing, housing, transportation, ecation and music. The network can not only satisfy you in life, but also satisfy you in leisure and entertainment. Everyone yearns for the convenience of such a "good housekeeper" anytime and anywhere, and has to bow to its "omnipotent" and admire it.
However, nothing is perfect. It is the so-called "things will turn around when they reach the extreme". Although the network is deeply loved by the general public, it is coveted by unscrupulous people because it goes deep into everyone's life: manufacturing computer viruses and Trojan programs are full of dangers everywhere. If you accidentally enter an ugly website, you should close it immediately, otherwise it will be as difficult to get out as a sheep into a tiger's mouth and a tiger's den.
"There are gods in the first three feet, and good and evil will be rewarded". We advise those criminals who want to use the Internet as a criminal tool not to take chances and do something illegal to avoid breaking the law. It's too late to regret at that time. Although the current website can meet human needs and desires, if it is used as a criminal tool, it is tantamount to self degeneration, harming others and yourself.
3.国家网络安全宣传周英语作文
With the development of information technology and the increasing popularity of computers, the network has already become an indispensable part of life. It not only gives full play to the multiple functions of the network, but also closely combines technology with life to provide people with a more comfortable and convenient information life. As long as you click the mouse at home and connect to the Internet, you can "scholars don't go out and know everything in the world", and even meet the needs of life such as food, clothing, housing, transportation, ecation and entertainment.
I like the Internet very much and often surf the Internet, but I am always very careful. Because although the network world is diverse and all inclusive, there are many novel things, but there are also many hidden traps. Like the Trojan horse virus, it not only slows down the operation of the computer, but also leads to the loss of personal data, and important data may also be stolen; There are also some bad websites, which will do great harm to the body and mind if they are browsed by minor children; There are also some online friends and online games. If you are not careful, you may be cheated by netizens you haven't met, or even lose both human and financial resources! Such examples abound, and the victims are not only children, but even alts.
As the saying goes, "water can carry a boat or overturn a boat." the Internet is the same to us. It depends on how users handle it. If used well, it will be a good helper in work and life; If you don't use it well, you are likely to hurt yourself and leave regret. In order to keep bad websites away from us, avoid physical and mental harm, and refuse viruses to invade personal computers, we should pay attention to "not downloading unknown or illegal software, not opening unknown links, not disclosing personal data, and not going out with netizens" when surfing the Internet, so as to protect personal safety and enjoy the online world.
I hope you can enrich your network knowledge and literacy, so that you can fly freely in the network world and absorb the rich resources brought by the convenience of the network without fear of the network trap.
4.国家网络安全宣传周英语作文
Our current life is a life with developed science and technology. Almost everyone has a computer at home. Although computers have many advantages, they also have many disadvantages.
Can computers let us query information, play games and listen to music? Because the advantages of computer make our life more convenient, the advantages of computer often make us forget the matters needing attention.
When we play games happily, we often accidentally leak our personal information to others, so we are cheated by the fraud group for a lot of money. There are also some web pages that will affect people's thinking and behavior, such as violent and bloody web pages. Sometimes we touch some web pages or letters by mistake, which makes our computer poisoned and crash. Let us feel very angry.