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Information: Form 4: 1.3.1.1 - Define computer security

Thu, 27 Aug 2009 14:00:30 GMT

COMPUTER SECURITY

DEFINITION OF COMPUTER SECURITY
Computer security means protecting our computer systems and the information they contain against unwanted access, damage, destruction or modification.

We need to protect our computer from any intruders such as hackers, crackers and script kiddie.
We do not want strangers to read our e-mail, use our computer to
attack other systems, send forged e-mail from our computer, or examine personal information stored on our computer such as financial statements.

TYPES OF COMPUTER SECURITY
Three types of computer security are:

a) hardware security
b) software security/data security
c) network security

a) HARDWARE SECURITY
Hardware security refers to security measures used to protect the hardware specifically the computer and its related documents.

The examples of security measures used to protect the hardware include PC-locks, keyboard-locks, smart cards and biometric devices.

b) SOFTWARE AND DATA SECURITY
Software and data security refers to the security measures used to protect the software and the loss of data files.

Examples of security measures used to protect the software are activation code and serial number.

An example of security measure used to protect the loss of data files is the disaster recovery plan method. The idea of this plan is to store data, program and other important documents in a safe place that will not be affected by any major destruction.

c) NETWORK SECURITY
The transfer of data through network has become a common practice and the need to implement network security has become significant.

Network security refers to security measures used to protect the network system. One example of network security measures is firewall. With firewall, network resources can be protected from the outsiders.

PERSONAL COMPUTER SECURITY CHECKLIST
In order to make sure our computers are secured, here are the computer
security checklist to follow.

ü Do not eat, drink or smoke near the computer
ü Do not place the computer near open windows or doors
ü Do not subject the computer to extreme temperatures
ü Clean the equipment regularly
ü Place a cable lock on the computer
ü Use a surge protector
ü Store disks properly in a locked container
ü Maintain backup copies of all files
ü Stores copies of critical files off sites
ü Scan a floppy disk before you open it
ü Do not open any unknown email received

1.3.2.1 - Explain briefly the different threats to computer
security :
Malicious code
Hacking
Nature/environment
Theft

INTRODUCTION COMPUTER THREATS

The computer is a great tool to store important information. In certain cases, the information is very vital that losing it will harm the computer system.

Computer threats can come from many ways either from human or natural disasters. For example, when someone is stealing your account information from a trusted bank, this threat is considered as a human threat. However, when your computer is soaked in heavy rain, then that is a natural disaster threat.

MALICIOUS CODE
Malicious code is also known as a rogue program. It is a threat to computing assets by causing undesired effects in the programmer’s part. The effect is caused by an agent, with the intention to cause damage.

The agent for malicious code is the writer of the code, or any person who causes its distribution. There are various kinds of malicious code. They include virus, Trojan horse, logic door, trapdoor and backdoor, worm and many others.

a) VIRUS
· a program that can pass on the malicious code to other programs by modifying them

· attaches itself to the program, usually files with .doc, .xls and .exe extensions

· destroys or co-exists with the program

· can overtake the entire computing system and spread to other systems

b) TROJAN HORSE
· a program which can perform useful and unexpected action

· must be installed by users or intruders before it can affect the system’s assets

· an example of a Trojan horse is the login script that requests for users’ login ID and password

· the information is then used for malicious purposes

c) LOGIC BOMB
· logic bomb is a malicious code that goes off when a specific condition occurs.

· an example of a logic bomb is the time bomb

· it goes off and causes threats at a specified time or date

e) TRAPDOOR OR BACKDOOR
· a feature in a program that allows someone to access the program with special privileges

f) WORM
· a program that copies and spreads itself through a network

HACKER
Hacking is a source of threat to security in computer. It is defined as unauthorised access to the computer system by a hacker.

Hackers are persons who learn about the computer system in detail. They write program referred to as hacks. Hackers may use a modem or cable to hack the targeted computers.

NATURAL AND ENVIRONMENTAL THREATS
Computers are also threatened by natural or environmental disaster. Be it at home, stores, offices and also automobiles.Examples of natural and environmental disasters:
Flood
Fire
Earthquakes, storms and tornados
Excessive Heat
Inadequate Power Supply

Primary Differences Between Worms And viruses

Worm
Operates through the network
Spreads copies of itself as a standalone program

Virus
Spreads through any medium
Spreads copies of itself as a program that attaches to other
programs

THEFT
Two types of computer theft:

1) Computer is used to steal money, goods, information and resources.
2) Stealing of computer, especially notebook and PDAs.

Three approaches to prevent theft:

1) prevent access by using locks, smart-card or password
2) prevent portability by restricting the hardware from being moved
3) detect and guard all exits and record any hardware transported

THEFT
Two types of computer theft:

1) Computer is used to steal money, goods, information and resources.
2) Stealing of computer, especially notebook and PDAs.

Three approaches to prevent theft:

1) prevent access by using locks, smart-card or password
2) prevent portability by restricting the hardware from being moved
3) detect and guard all exits and record any hardware transported

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Windows Defender is software that helps protect your computer against pop-ups, slow performance, and security threats caused by spyware and other unwanted software by detecting and removing known spyware from your computer. Windows Defender features Real-Time Protection, a monitoring system that recommends actions against spyware when it's detected, minimizes interruptions, and helps you stay productive. The benefits of installing Windows Defender include

Protection against the latest threats
* A dedicated team of Microsoft researchers continuously searches the Internet to discover new spyware and develop methods to counteract it.
* A voluntary, worldwide network of Windows Defender users helps Microsoft determine which suspicious programs to classify as spyware. Participants help discover new threats quickly and notify Microsoft analysts, so that everyone is better protected. Anyone who uses Windows Defender can join this network and help report potential spyware to Microsoft.
* To help protect your computer from the latest threats, you can choose to have updates that counteract new spyware automatically downloaded to your computer.

Windows Defender is included with all versions of Windows Vista and is available to download for genuine copies of Windows XP Service Pack 2 or later, or Windows Server 2003 Service Pack 1 or later. Learn more about Windows Defender and other Microsoft anti-malware solutions, and to learn more using Windows Defender, watch this demo.

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Protect your computer against spywareSpyware is a general term used to describe software that performs certain behaviors such as advertising, collecting personal information, or changing the configuration of your computer, generally without appropriately obtaining your consent first.
Spyware is often associated with software that displays advertisements (called adware) or software that tracks personal or sensitive information.

Not all software that provides ads or tracks your online activities is bad. For example, you might sign up for a free music service, but you "pay" for the service by agreeing to receive targeted ads. If you understand the terms and agree to them, you may have decided that it is a fair tradeoff. You might also agree to let the company track your online activities to determine which ads to show you.

Other kinds of spyware make changes to your computer that can be annoying and can cause your computer to slow down or stop responding. These programs can change your web browser's home page or search page, or add additional components to your browser you don't need or want. These programs also make it difficult for you to change your settings back to the way you originally had them.

There are a number of ways spyware or other unwanted software can get on your computer. A common trick is to covertly install the software during the installation of other software you want such as a music or video file sharing program. The key in all cases is whether or not you (or someone who uses your computer) understand what the software will do and have agreed to install the software on your computer.

Whenever you install something on your computer, make sure you carefully read all disclosures, including the license agreement and privacy statement. Sometimes the inclusion of unwanted software in a given software installation is documented, but it might appear at the end of a license agreement or privacy statement.
My computer seems sluggish

Spyware and other unwanted software are not necessarily designed to be efficient. The resources these programs use to track your activities and deliver advertisements can slow down your computer and errors in the software can make your computer crash.
If you notice a sudden increase in the number of times a certain program crashes, or if your computer is slower than normal at performing routine tasks, you may have spyware or other unwanted software on your machine. If you think your computer is infected with spyware, find out how to get rid of spyware and how you can prevent spyware from getting on your computer.
Windows Defender and on-going updates are available for no additional charge to Windows XP and Windows Vista customers.

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Brad Pitt Biography

Thu, 27 Aug 2009 14:00:08 GMT

Brad Pitt Biography

Name : Brad Pitt

Real Name : William Bradley Pitt

Date Of Birth : December 18, 1963

Place Of Birth : Shawnee, OK USA

Sign : Sun in Sagittarius, Moon in Aquarius

Height : 6' 0''

Education : Attended University of Missouri at Columbia

Father : Bill Pitt

Mother : Jane Pitt

Brother : Doug Pitt

Sister : Julie Pitt

Wife : Jennifer Aniston (2000-2005)

Fan Mail : Brad Pitt
C/O Creative Artists Agency
9830 Wilshire Blvd
Bevery Hills,CA 90212
USA

Brad Pitt Trivia

Brad Pitt spent four days in Ethiopia to learn more about AIDS in Africa as part of a fund-raising campaign to combat the disease on the world's poorest continent. He visited local projects fighting the spread of HIV, the virus that causes AIDS & also met with eight top Ethiopian singers who have collaborated on songs to educate people about HIV and to raise money for AIDS programs.
Brad Pitt and Jennifer Aniston have bought English home belonging to their celebrity chef pal Jamie Oliver. (November 3, 2004)
Bought wife Jennifer Aniston a yacht, which was originally purchased by Richard Burton in 1967, when he wanted to congratulate Elizabeth Taylor on her Oscar for 'WHO'S AFRAID OF VIRGINIA WOOLF?. (July 23, 2004)
Has been branded a wimp by Val Kilmer who claims Pitt�s muscle-bound physique on TROY posters have been air-brushed. (June 23, 2004)
Wildfires are threatening the Los Angeles oceanfront home of Brad Pitt and Jennifer Aniston while they away in Europe. (June 10, 2004)
Caused outrage at the Cannes Film Festival by walking out of the official screening of his film TROY before it had started. (May 29, 2004)
Brad Pitt, George Clooney and Matt Damon have found the perfect way to promote their OCEAN'S 12 - they home video their weekends off.
Led a chorus of celebrities congratulating his former fiancee Gwyneth Paltrow on the birth of her daughter. (May 25, 2004)
Has reportedly canceled a series of interviews for his movie TROY, because he's sick of answering questions about his marriage to Jennifer Aniston. (May 17, 2004)
During downtime on the set of TROY, Eric Bana and Brad Pitt make their trailers, which were right next to each other, a bar, where all cast and crew could do was sit around and drink.
Has insisted his marriage to Jennifer Aniston is fine despite hinting recently that it may not last forever. (May 12, 2004)
Is set to star in a big screen adaptation of Pride and Prejudice. (May 6, 2004)
Is among People's most beautiful people. (2004)
Quit smoking for months of intense physical training to prepare for his role as Greek hero Achilles in the film TROY. (April 21, 2004)
Is to narrate a British Broadcasting Corp. radio series about one of his musical idols, British songwriter Nick Drake. (April 7, 2004)
Is set to play legendary outlaw Jesse James in a film based on the book, 'The Assassination of Jesse James by the Coward Robert Ford'. (March 23, 2004)
A doorman refused to let Brad Pitt and George Clooney, who were caught in a rain storm while out jogging, into a top Italian hotel after mistaking the actors for vagrants. (March 17, 2004).
Pitt and Angelina Jolie have taken to firing guns in preparation for their roles as assassins in the upcoming movie MR AND MRS SMITH. (February 12, 2004)
Will give viewers of his new film MR AND MRS SMITH the sight of his naked posterior. (February 7, 2004)
Is teaming up with Angelina Jolie to star in the action movie MR. AND MRS. SMITH. (January 15, 2004)
Police arrested six security guards hired to protect the set of the Brad Pitt's movie TROY and charged them with stealing an all-terrain motorcycle and tools belonging to the production crew. (September 30, 2003)
Abandoned his TROY film set on the island of Malta to have his hair dyed, 2,600 miles away in Britain � He was reportedly concerned the strong Mediterranean sun had damaged his hair, so he contacted his favorite stylist Daniel Galvin and begged him to open up his shop even though it was closed. (September 17, 2003)
Brad Pitt and Jennifer Aniston have finally moved into the Hollywood dream home they bought two years ago, prompting speculation they are ready to start a family. (August 19, 2003)
Pitt is planning to remake 1955 James Dean movie EAST OF EDEN and play the lead role -- The actor has approached the estate of classic author John Steinbeck in a bid to secure movie rights to the novel, which inspired the Oscar-winning flick about two Californian brothers who compete for the love of their father. (August 14, 2003)
Pitt looks to be teaming up with supermodel Cindy Crawford's husband Rande Gerber to put into action his plan for a 'Rat Pack'-style hotel venture � Pitt has already been reported as working with actor George Clooney to plan a chain of hotels across the world and he�s now already scouting for land in Las Vegas that will be suitable for the star-studded venture. (July 9, 2003)
Pitt is devastated after his friend's death on the set of new film TROY � Pitt became a regular visitor and enjoyed playing poker with George Camilleri, who suffered an horrific leg wound after jumping off a galleon as it approached the beach in the Trojan War epic, before the extra died of heart attack. (July 8, 2003)
Pitt was furious when a British tabloid accused him of bulking up with the assistance of steroids, because it took such a lot of dedication to get in shape -- His spokesperson Cindy Guagenti says Brad has worked extremely hard for months to obtain his look for the film TROY and he does not use steroids under any circumstances. (June 23, 2003)
Pitt has proved it's not just in movies where he's an action hero � He was having a cigarette on the pavement outside Dan Tana's Italian restaurant in Los Angeles on Sunday, when he saw a sports car jump the curb and hurtle towards a female pedestrian; Brad then pushed the woman out of the way before the wayward driver plowed into her. (February 26, 2003)
Filming of Pitt's new blockbuster movie TROY was delayed, amid fears of a terrorist attack. (February 19, 2003)
Has the best eyes and lips among male celebrities, according to an annual survey conducted by the Beverly Hills Institute For Aesthetic And Reconstructive Surgery in Los Angeles. (February 6, 2003)
Admits the sex scenes with Geena Davis in his big film debut THELMA & LOUISE remind him of one of his most embarrassing and uplifting moments. (February 4, 2003)
The news all men wanted to hear: Voted one of the sexiest guys alive, Brad Pitt has dandruff -- according to a Britain tabloid, since letting his hair grow long and straggly Pitt's suffered from a flaking scalp. (January 31, 2003)
Brad Pitt and Jennifer Aniston have been rowing over when to start a family -- Pitt is so desperate to become a daddy that he was sorely disappointed to hear that his wife had signed on to do a tenth series of FRIENDS. (January 16, 2003)
A sequel to hit film SEVEN is to be made with original star Morgan Freeman but minus hunk Brad Pitt -- the grisly serial killer movie wowed audiences in the 1995 who watched as Pitt's character Detective David Mills was left bereft after his wife and unborn baby became the last victims of Kevin Spacey's eerie psycho; instead the action will center on Freeman's character William Somerset as he comes up against another serial killer. (January 3, 2003)
Brad Pitt and Jennifer Aniston turned Christmas into a season of sexual frolics, by buying each other naughty gifts -- the couple didn't leave their Beverly Hills mansion over the festive season where it is rumored they haven't even left the bedroom. (December 28, 2002)
Pitt is sought after for magazine covers and posters worldwide, but the Malaysian government believes the Hollywood star's appearance in a recent series of car advertisements in this region was an insult to Asians -- Deputy Information Minister Zainuddin Maidin said Monday that ads featuring models and personalities who don't look Asian would plant a sense of inferiority among Asians. (December 17, 2002)
Pitt has been keeping himself up all night looking at videos of his house because he fears the threat of intruders. (October 25, 2002)
Pitt missed his wife Jennifer Aniston's big night at the Hollywood Film Awards on Monday night because he was back home celebrating his parents' wedding anniversary. (October 10, 2002)
Pitt walked off the Australian set of THE FOUNTAIN because he couldn't bear to be away from his wife Jennifer Aniston a minute longer; he was desperately unhappy on the set after a series of supposed creative disputes with director Darren Aronofsky. (September 25, 2002)
Hundreds of crew members on filmmaker Darren Aronofsky's sci-fi flick THE FOUNTAIN are taking Pitt to task for bailing on the production just two months before its scheduled start date in Australia, apparently scuttling the project. (September 2002)
He got into a real life car chase after a crash in LA on Wednesday, August 7th as he chased after a woman driver who sped off from the scene. (2002)
He has upset residents of an Australian tourist resort - by refusing to shoot his new movie there. The movie star is moving DOWN UNDER for six months while he makes new film THE FOUNTAIN, with Cate Blanchett and Johnny Depp, there.

Brad Pitt Detailed Biography

Brad Pitt may look and sound likea Generation X slacker, but he has workedhard for most of his adult life. Brad Pittwas born in Oklahoma and raised inSpringfield, Missouri.In high school Pittwas involved in sports, debating, studentgovernment and school musicals. Pitt studiedjournalism at the University of Missouriwith a focus on advertising (he occasionallyacted in fraternity shows). He left collegetwo credits short of graduating to move toCalifornia. Before he became successful atacting, Pitt supported himself by movingrefrigerators and dressing as a giantchicken while working for el Pollo Loco.After attracting attention as a magazine-admodel for Levi's, Pitt made his TV debut inDallas and his film debut in CuttingClass(1989). His first film role of note was asthe hitchiker in Thelma and Louise (1991).Since that time, Pitt has exhibited a rangeabove and beyond his ''Hey dude'' demeanor throughsuch films as A River Runs Through It (1993),True Romance (1993), Interview with the Vampire(1994), and Legends of the Fall (1994).

Source: http://www.netglimse.com

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Thu, 27 Aug 2009 13:59:53 GMT

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mdlirhsp's Tripcrazed

Information: Form 4: 1.3.1.1 - Define computer security

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Brad Pitt Biography

Spyware Cease v4.7.1

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Free download softwares with key: Spyware Doctor 2009 With Anti ...