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Computer Security and its role
Computer Security and its role
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Home Page > Computers > Security > Computer Security and its role
Computer Security and its role
Posted: Sep 02, 2009 |Comments: 0
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Computer Security and its role
About the Author
(ArticlesBase SC #1188264)
Article Source: http://www.articlesbase.com/ – Computer Security and its role
INTRODUCTION
The paper explores the role of Pass word, Anti virus and data encryption in computer security. It has been discussed that passwords is known to be ancient. Sentries would challenge those wishing to enter an area or approaching it to supply a password or watchword. Sentries would only allow a person or group to pass if they knew the password. In modern times, user names and passwords are commonly used by people during a log in process that controls access to protected computer operating systems, mobile phones, cable TV decoders, automated teller machines (ATMs), etc. Data encryption refers to mathematical calculations and algorithmic schemes that transform plaintext into cyphertext, a form that is non-readable to unauthorized parties. The recipient of an encrypted message uses a key which triggers the algorithm mechanism to decrypt the data, transforming it to the original plaintext version.
Lastly the paper discusses another important computer security software, computer virus which is a computer program that can copy itself and infect a computer without the permission or knowledge of the owner. The term “virus” is also commonly but erroneously used to refer to other types of malware, adware, and spyware programs that do not have the reproductive ability. A true virus can only spread from one computer to another (in some form of executable code) when its host is taken to the target computer; for instance because a user sent it over a network or the Internet, or carried it on a removable medium such as a floppy disk, CD, DVD, or USB drive.
MAIN BODY
A password is a secret word or string of characters that is used for authentication, to prove identity or gain access to a resource (Example: An access code is a type of password). The password must be kept secret from those not allowed access.
The use of passwords is known to be ancient. Sentries would challenge those wishing to enter an area or approaching it to supply a password or watchword. Sentries would only allow a person or group to pass if they knew the password. In modern times, user names and passwords are commonly used by people during a log in process that controls access to protected computer operating systems, mobile phones, cable TV decoders, automated teller machines (ATMs), etc. A typical computer user may require passwords for many purposes: logging in to computer accounts, retrieving e-mail from servers, accessing programs, databases, networks, web sites, and even reading the morning newspaper online.
Despite the name, there is no need for passwords to be actual words; indeed passwords which are not actual words may be harder to guess, a desirable property. Some passwords are formed from multiple words and may more accurately be called a passphrase. The term passcode is sometimes used when the secret information is purely numeric, such as the personal identification number (PIN) commonly used for ATM access. Passwords are generally short enough to be easily memorized and typed.
For the purposes of more compellingly authenticating the identity of one computing device to another, passwords have significant disadvantages (they may be stolen, spoofed, forgotten, etc.) over authentications systems relying on cryptographic protocols which are more difficult to circumvent. The original password concept has been proven to be insecure. There have been cases where passwords have been compromised without a users knowledge, through coersion, or because they were conned into revealing it. The core problem with legacy passwords is that it is very difficult or impossible for an administrator or a computer system to differentiate between a legitimate user and illegitimate user gaining access through the same password. Because of this inherent flaw in the original password system, Two Factor Authentication was invented.
A password is “something you know.” This information is understood to be known by a single individual. Two-factor authentication systems add in another factor, “something you have”, electronic card key, electronic token, dongle, fob or some other physical item you keep in a secure place when not in use. A common stand in replacement for this second factor when higher levels of security are needed is “something you are”. A biological fingerprint, retina pattern, person’s weight, specific vital signs or a combination of these items is used in place of the electronic device. The biological factor for authentication and authorization has been found to be unreliable, but not in that it permits those that should not be permitted when used properly, but because there is a tendency for it to deny legitimate users access due to sickness, physical body changes, or other physical impairments.
There are two common methods of authentication when users use electronic components for two-factor authentication, response-only, and
SeeMoto – Wireless Sensor Network (Remote Monitoring / Asset Tracking / Supply Chain Integrity)
SeeMoto provides you and your customers and partners 24/7 on-line access to real-time and history data of your assets
SeeMoto is combination of novel wireless sensors, polymorphic data, internet services, flexible reporting and information sharing.
Visibility and Tracability — Shared with your business partners – In real time and in history — WHAT, WHEN and WHERE
The Seemoto system is a combination of local wireless sensor networks, GPS and a global service. The Service is accessible from any terminal (PC, Laptop, Mobile Phone) with an internet connection.
For more information visit: http://seemoto.com
Duration : 0:1:24
The Communicators: Internet Security
Mark McLaughton, CEO of Verisign, tells “The Communicators” about the creation of domain names and ongoing security concerns on the Internet. Program from Saturday, October 23, 2010.
Duration : 0:29:52
Securing your wireless router with WPA PSK
A video to show you security essentials for an integrated services wireless router.
Duration : 0:9:1
AT&T Completes Makeover in More Than 2,200 Stores; Adds Netbooks and ConnecTech Services
AT&T revamped its more than 2,200 retail locations, as well as added netbooks and AT&T ConnecTech services.
For more information, visit http://www.att.com
Also join the ongoing conversation on the AT&T Facebook page: http://www.facebook.com/att and Twitter feed: http://www.twitter.com/shareatt
Duration : 0:3:12
Paradox Marine, Marine Magellan wireless security system
Demonstration of Paradox Marine’s Marine Magellan wireless security and monitoring system. Atlantic Marine Electrical Services is a proud dealer of the Marine Magellan system.
Duration : 0:6:32
Cisco 800 Series Routers for SMB Video Data Sheet
The Cisco 860 and 880 Routers are fixed-configuration routers that combine Internet access, security, voice and wireless services over broadband speeds onto a single device that is simple to use and manage for small businesses. http://www.cisco.com/go/800
Duration : 0:5:0
How to connect your Wii to the internet Tutorial
In this tutorial I show you how to Connect the wii to your internet connection
And how to get 500 FREE WII POINTS through the connection ambassador promotion
Connection Ambassador:
http://wii.nintendolife.com/news/2009/10/be_a_pal_become_a_connection_ambassador
http://www.nintendo.co.uk/NOE/en_GB/news/2009/nintendo_launches_connection_ambassador_promotion_14834.html
CONNECTING TO WII
Go to “wii”
next page
internet
wireless
find acess point
choose your access point
enter password
test connection
download updates
Connection Ambassador 500 points
Wii shop
bottom left “Connection ambassador Promotion”
Enter the number [2366 3200 6353 9929]
back to wii menu
bottom right button
bottom left the pen and paper button
then on the right is adress book
post this number on comments
or send via youtube or
ollyambassador@hotmail.com
Duration : 0:3:2
Vancouver Olympics 2010: Laptop Lock Netbook Security
http://www.netbooknews.com When traveling to an event like the Olympic Games you should make sure that your take some precautions around traveling with your netbook. This program won’t stop your computer from getting stolen but you might be able to put a message in to get it back. If that fails then you can encrypt the data or wipe your hard drive.
Duration : 0:2:54