Posts Tagged ‘Virus’

Xp computer,make Xp faster, how to increase your computer speed easily?

October 28th, 2010

How to make XP faster? Nowadays almost everyone has a computer but not everyone knows how to make XP faster and maintenance it. Most of the computer users may think that computer running slow is mainly caused by virus infection. Actually there are other factors that cause the problems. Below are the main causes of slow PC problem as well as the solutions to make XP faster.

First step to make XP faster—Defragment

Defragment the computer hard disk regularly is a good way to make XP faster. This will help you rearranging the file data into continuous space thus make the computer respond quicker. You can access to the defragment tools in accessories -> system tools. Once you start the defragment, do not run other programs otherwise the process will be slowed down.

Second step to make XP faster—Search for duplicate files.

You may have kept some older versions of your work for back up purposes. By now, the purpose of these versions would have been served. Speed up Windows 7 by deleting these versions and free up space.

Third step to Make XP faster—Virus scan

Virus is another reason for a slow computer as we talk about. You computer can easily got infected by virus or spyware if you surf the internet a lot. Virus will definitely slow down you computer, it can also steal your personal information in the computer. Make sure to install a good antivirus program on your computer and run it regularly to keep your computer virus-free.

Fourth step to Make XP faster—Clean out registry

Nearly 90% of the computer problems include computer slow down can be attributed to Windows registry. Registry is the database that stores settings and information of all the computer programs and hardware, if you want to keep your computer running properly, you’d better make sure the registry is clean and errors-free.

The best solution to fix registry errors and make XP faster is to run a free registry scan. If you never scan and clean the registry before, it is no surprise that it will scan out hundreds of errors and obsolete entries. You just need one click of your mouse, all the errors and entries can be fixed and removed instantly. By doing so, it will definitely increase your computer speed.

Source:http://onlinenichemarket.com/computers/computer-tips/xp-computer-make-xp-faster-%E2%80%93-how-to-increase-your-computer-speed-easily/

What is a pc or computer virus – definition, is it the same like the virus from which we get Ill

October 26th, 2010

Virus Definitions, also known as Virus Signatures, are the individual identifiers that are used by anti-virus software to identify and neutralize virus software which attempts to infiltrate your PC system. When fighting the enemy – it helps to know what and who they are! VIruses are actually computer Programs written by Computer Programmers, to whom we called Programmers. But these programs are meant to act notoriously. These programs are not usefull.

They are developd with a view to attack the computers worldwide. By doing this the owners of these Viruses/Trojans/Worms/Spywares etc. try to steal usefull data found on the computers globally. In different cases the purpose and the mode of attack by these notorious programs are different. These programs are so written that we even don’t get notice of it when the invasion took place. But when we get to know about the problem many a times It’s too late.

Viruses are usually unique, or, if similar, can be variants of one another. Whatever form they take, and however they work, they are designed with one, and only one thing in mind – the manipulation of your machine to serve the purposes of the person writing the virus programming code.

The purpose could be mischief – to some people it is highly amusing to destroy something which does not belong to them. To others, it could be a means of cheap advertising, such as in virus spam mail, where they piggy back off your expense account by getting your computer to send out spam mail on their behalf. Yet others have much more sinister aims, and attempt to infiltrate your system for the purpose of obtaining personal details such as banking account numbers, personal ID data, for purposes of criminal behavior, identity theft, or fraudulent transactions.

Types Of Viruses:

1. Viruses

2. E-mail Viruses

3. Trojan Horses

4. Worms

Viruses generally work behind the scenes – they arrive as hidden code on the backs of innocent looking emails, links which you are encouraged to click on in websites which you perceive to be safe (these are known as Trojans), and as hidden code in the form of downloadable programmes such as games (malware). Spyware records what you look at, where you go when you surf, and sometimes your keystrokes, which endangers your security.

They spread like worms, via emails or file sharing, and send copies of themselves to others who you normally communicate with or have received emails from (all those In you’re address book). Sometimes viruses can work behind the scenes for long periods of time without the user even being aware of them. They may sap the processor, or they may just dance along in the background causing very little disturbance at all. It pays to be aware of viruses and how they can negatively impact on your personal computer use, and in particular, your personal life.

Source:http://site-press.com/antivirus/2010/10/26/what-is-a-pc-or-computer-virus-definition-is-it-the-same-like-the-virus-from-which-we-get-ill/

Computer hacking & virus / malware

October 12th, 2010

When a fortune-teller stares into her crystal ball she claims to see through to the misty future and offers guidance to those willing to hand over the required fee. However, she might be stumped when faced with questions about the state of tomorrow’s computer viruses, or whether or not there will be a global outbreak of cyber warfare. She ought not to be because, although the internet threat landscape is continually evolving, there are some basic principles that help us predict what’s coming next.

Perhaps surprisingly, these hold the human condition at their core. A 21st century Mystic Meg should have no problems foretelling the digital future and we’ll explain how you too can look into the future at internet threats. Anti Virus Companies like Symantec, GRISOFT etc have researchers that investigate current threats and new technologies with a view to discovering what the next big security problems are going to be, and they don’t use crystal balls.

ITS ALL ABOUT THE MONEY, In the old days the original computer viruses were born of pride or misplaced curiosity. Anonymous individuals wrote computer code to show how clever they were, viewing security software as a challenge. If they could beat anti-virus programs produced by big names such as Symantec, McAfee etc then they would have outsmarted the experts. In some cases their motivation was increased as anti-virus (AV) programs improved over time.

Today things have moved up a few gears and every reputable security company acknowledges that money is the motivation behind the vast majority of online threats. Viruses, compromised websites hosting malicious exploits, fraudulent emails and phishing websites have all been designed to steal or generate money.

As we ponder the future of malware and other threats, we need to look at the matter in the context of criminal endeavour, rather than seeing online threats as a result of vandalism and other types of low-level dysfunctional behaviour.

Over the years it has became clear that a new underground economy has evolved in which our personal details are traded for cash on the internet. This situation not only continues today, but the illegal information gathering and trading systems have grown even more sophisticated. Criminal organisations provide services to others much like legitimate business. They sell hacking tools in a web-based arms market and operate escrow systems to ensure that the thieves don’t rip each other off. Much of the criminal activity is based around malware, which forms the front line in the criminals’ activity.

Some people create malware, others sell it, while underground services offer to check the latest viruses to ensure that they aren’t detected by the software produced by anti-virus companies. It’s a sophisticated arrangement, both in terms of business and technology. AV companies, spend a lot of time monitoring and interacting with criminals as they go about their online business. They have something like an underground version of VirusTotal ( a website that scans URL’s for bugs ), to check that their malware can avoid detection, as well as services to monitor botnets. Botnets are potentially vast networks of compromised computers – PCs owned by regular internet users. They are part of the cybercriminal’s IT infrastructure and are the equivalent of a traditional gangsters Muscle. Botnets provide masses of computing power as well as the ability to bring down the websites and internet connections of large companies. They can be used to send out billions of spam emails, infect websites on masse and even host transient infected websites that come and go, making them very hard to take down.

In the worst cases (for the individual visitor), it might try to load malware on to their computer. Once malware is loaded on a system, the computer can be used as a tool to spy on its user. This means that usernames, passwords, bank account details and other sensitive data can be siphoned off and sent to the attacker.

Although you might think that this is the end of the story, the criminals who install the malware may not have a direct use for your data. I have read Symantec’s latest internet threat report. In it the company discloses that criminals compile lists of credit card numbers and bank details, which they sell off in huge lists. However, the availability of cards has dropped since last year, while demand remains high. This has increased the cost of buying the information. The report also notes a disturbing new development whereby criminals are trading ‘dump tracks’ – the whole information found in the magnetic stripe on a credit card. This data can not only be sold for a higher price than basic information, but it’s also more usable as it can be used to create a physical replica of the card. Criminals are now advertising personal services and, in a perverse version of online business networking, researchers have found recommendations for people involved in money laundering and even for ‘mules’. According to Symantec: “Mules are unsuspecting members of the public who have been duped into accepting funds into their accounts, or accepting stolen goods.

Like any other commodity, these people are traded on net forums by cybercriminals.” At some stage a criminal will end up using these details to commit a fraudulent act, but it’s likely that the data will pass through a number of hands first. lf and when your personal data is stolen online, it will often be passed from criminal to criminal before being used. Once in possession of a card, criminals may try to use it to buy goods. Alternatively, a criminal may leverage the services of a ‘cash-out’ criminal. These people may charge nothing for their services that is the service of emptying your bank account- but take a commission on the transaction instead. The online criminals have a large number of potential targets to consider. Although their primary objective is to make money, there are a number of ways to do so, some of which are more subtle than others. criminals put a value on personal details for the purposes of ID theft, selling the data to ID thieves and even pilfering online games login details for financial gain.

WHO ARE THE TOMORROWS VICTIMS? Tomorrow’s victims will be the same as today’s. The only difference is that the criminals need to stay ahead of the game in order to compete with each other and remain profitable. Criminals will always go for the easiest targets first, looking for low-risk, high-return opportunities. This means creating a widespread threat that has the potential to affect millions of people. The hackers aren’t going to single out an individual, but instead hope to catch as many random people as possible, collect their data and use or sell it for financial gain.

These regular people will likely have bank accounts and credit cards that can be stolen. Gamers often have online accounts that carry a high value there has been a thriving market in hijacking or emptying games accounts for years. Criminals might also try a targeted approach, where a specific (very rich) individual, company or group of people are faced with a highly convincing, customised attack.

In the past, criminals have sent infected CDs and USB keys to workers at banks and other large organisations. Hardware keyloggers can then be used to record usernames and passwords. There have been fears that last year’s attack on the recruitment website Monster furnished criminals with lots of personal information that allowed them to target people with powerful employment roles, such as CEOs of global companies. Targeted attacks can also use information gleaned from social-networking sites – a technology that has only become very popular in the last few years. Businesses themselves are another big target, although the scale of the problem is hard to assess. We only see the tip of the iceberg, There are probably documents containing zero-day exploits being sent around and so on, but companies won’t go public when they’re attacked.

Social engineering has repeatedly proven to be a useful technique for fooling people into taking unwise actions. The criminals trick victims into visiting fake or infected websites, downloading and installing harmful software and even responding to near-blatant attempts at fraud. This last con trick involves sending emails requesting your help in some matter, with the promise of delivering millions of dollars for no work at all.

Security companies claim that infected websites constitute the largest single threat at the moment, The general assumption is that these are legitimate websites that have been infected without their owners’ knowledge. The sites are hacked and a small piece of infected code, or a special type of (iframe) link to another infected site, is inserted. When a computer loads the web page, it becomes infected.

There is also a view that sites being operated by less moral individuals may host malware on purpose. Porn websites are hosted by those with a flexible ethical framework, They are more likely than some to host malicious iframes in order to gain a few dollars per installation of malware.

Viruses and infected websites that attack consumer electronics as well as computers are likely to be a feature of future cyber attacks. Currently computers are the main target for online criminals. The PC and, to a much lesser degree, the Mac are both attacked because lots of people use them for online banking and other tasks that involve handling valuable information.

Tomorrow’s targets will be the devices that people use for similar activities. This means that the PC is going to stay at the top of the hacker’s hit list for a long time to come. If a certain type of mobile phone became a popular way to access online banking, then you can guarantee that criminals would start to produce malware designed to target and compromise them. From a criminal’s point of view, hardware is a much less important consideration than software when building an attack mechanism. For example, a modern Mac is exactly the same as a PC under the hood. The very same processors, RAM, graphics chips and hard disks are used in both computers these days. The difference is the operating system. Macs run OS X while PCs run completely incompatible variations of Windows or Linux.

As most computers in the world run Windows, criminals concentrate on breaking into Windows PCs. The more popular Macs become, the more attractive they are as targets. Mobile phones don’t share the same relationship as Macs and PCs. Even different models from the same company use different combinations of hardware and software.

This means that there’s such a wide selection in use at any one time that a hacker would have to write many different viruses, worms or other threats to catch a significant number of victims. In this situation, variety is a defence. Once people settle on a specific mobile phone, however, it becomes worth hacking. ( could the iphone be a target ? ) Many of the best-known anti—virus companies produce an anti-virus product for one or more types of mobile phone, yet they generally admit that the threat in this area is either very low or even non-existent. Mobile phone malware is in its infancy There are millions of viruses and Trojans that target PCs. Mobile phone viruses number in the few hundreds or maybe early thousands. There is still such a disparity of environments: iPhones, Windows Mobile, Symbian, BlackBerry, Android and others. There is too much variety for malware to function.

Software is much more important than hardware. Today’s hackers concentrate on the underlying operating system (such as Windows XP) and common applications that they can access. At the moment, attractive applications include web browsers as well as software that web browsers use, such as Adobe Flash and Reader programs. In recent months security holes have been found in versions of these programs, as well as Microsoft’s Internet Explorer web browser. When we try to predict the future of internet threats, we can be sure that these types of programs will be targeted.

The only variations will be the hardware used to run the web browsers and necessary plugins. Do you believe that your TV could be hacked? Or your games console? The latest versions of these domestic home entertainment systems often include the ability to access the internet, so that they can use BBC iPlayer, YouTube and other popular services. If your TV has a web browser, then it would be foolish to assume that it was invulnerable to an attack. Before you ban TV from your household, remember what we said earlier about attractive targets. Once you and half the popular start banking online with your TV or PlayStation, only then will the hackers move in. And they will. I reckon we’ll see anti-virus software being installed on TV sets within the next five years. The traditional view of a hacker attack involves a computer system being manipulated by an unauthorised and external force. So how could your TV could be hacked if it lacks a hard disk or any internal storage at all? Where would the viruses be stored, for example? Similarly a games console doesn’t seem to provide a very rich environment for a criminal to exploit. This means that while your PC, TV or console may not be hacked, the data that flows between it and the computers on the internet that power the services you use could be stolen or corrupted. This is known as data cloud hacking.

IS THERE NO ESCAPE ? The usual way to make money with TV broadcasts is with advertising. The advertising system itself could be subverted and used either to make money directly or as part of a blackmail scam. The internet-enabled TV initially has no financial value, What money can criminals make? They could show you a commercial that may be clickable. This way, people’s identity data can be stolen. If you don’t click the ad you may be threatened with the prospect that pornography will pop up on screen when your children are watching.

The term cloud-computing is quite vague. These days it tends to mean running applications directly on a server. This isn’t a new concept for businesses used to dealing with email and web servers. However, the idea of running an application such as a word processor in the cloud is novel for most people as we’re used to such programs being software that runs on the computer sitting in front of us.

When you use Google Docs to create and edit word-processing or spreadsheet documents, you’re experiencing what most people consider to be cloud computing. You should already be able to see some of the security issues surrounding cloud computing. First of all, your data is stored on a remote computer under someone else’s control. Every time you access that data you have to authenticate with a remote system, which means that your username and password probably traverses the internet. After you log in, parts of any file that you access also moves through the internet.

This potentially exposes your account and its contents to wrong-doers far more than if you stored your photos, documents and email on your hard disk. However, it’s convenient to work this way as you can access your data from any computer that you like (which is also another potential security flaw) and, in some cases, you can use low—powered computers to run demanding applications because they use the processing power and memory of the service provider’s systems rather than the resources of your own IT setup.

The big challenge to companies that provide internet services is to ensure that customers’ data remains safe. Services need to identify where data comes from and where it should go. They need to protect against man-in-the—middle attacks, where attackers intercept data as it passes by. Cloud services are not currently developed in this way and can be fooled. Tomorrow’s internet attackers will be sophisticated and realistic. They won’t spend hours trying to hack your mobile or TV while there are easier options available.

As long as we continue to use PCs to access online banks, buy from ecommerce sites and play complex subscription-based games, so the bad guys will continue to attack via the home computer. Recent history shows that social engineering, where victims are fooled into making poor decisions, is a very successful route to separating us from our cash and personal details. Technical ‘solutions’ such as internet worms and Trojans embedded in pirated software still exist, but it’s those fake emails, infected websites and even infected email attachments that will continue to pose a real threat for the foreseeable future.

We also know that security software is not a cure-all solution. And few security companies would be brave enough to claim that they were winning the war against malware. Nevertheless, an anti-virus program will help protect your system. FREE ANTIVIRUS SOFTWARE If you don’t want to spend any money we recommend Microsoft’s latest free anti-virus program, Security Essentials but for better protection you need to splash out, and currently any of the following are good choices: Norton Internet Security 2010, AVG Antivirus, AVG Internet Security.

It is also important to keep your system up to date with the latest security patches. This means updating Windows, your web browser and plug-ins such as Adobe Flash and Acrobat Reader. Fail to do this and you can’t really blame your anti-virus software if your PC becomes infected. While the days of safe computing are probably a nostalgic fantasy (bugs have existed for as long as computers have), it’s not scaremongering to say that today things are far worse than they ever have been, and the problem isn’t going to disappear.

There is some good news. While the online criminals engage in a virtual arms war against security companies, sell our data for pennies and cost companies billions in lost or stolen revenue, the main security hole is our own gullibility. If you become more suspicious of email requests to change or confirm account details, pop—up warning messages on websites and too-good-to- be true offers, then you’re way ahead of the herd. And hackers are only interested in the herd.

Source:http://www.dreamboxvault.com/computer-hacking-virus-malware/

Stuxnet super virus also attacked China

October 2nd, 2010

The latest super virus, Stuxnet, which attacked Iran’s Nuclear Facility, is reported to have attacked China too. Some of the industrial computing systems and their hardwares run by the Siemens software were affected by the Stuxnet worm. Now there is a fear shown by the US, that if the virus could hit China, then the United States is not missing on its list.

China has stated that there are almost six million industrial computing systems affected by the malicious worm, these machines are considered the most important part of an functioning industry. The Stuxnet virus aims only Siemens run industrial software which run machineries within a particular industry.

Stuxnet in known as a secret thief also, as after installing itself in an industrial computer, it reprograms the commands for a particular machine or hardware, and provides dangerous commands to them. In addition to this, it also steals sensitive information from the computing system and sends it to the server of the country where it has come from. Many countries around the world have buckled themselves to fight against his virus, as they have prepared anti-viruses that can neutralize the Stuxnet worm program.

Source:http://asiabizz.com/3603/stuxnet-super-virus-also-attacked-china/

Virus took aim at Iran say cyber companies

September 25th, 2010

A computer virus that attacks a widely used industrial system appears aimed mostly at Iran and its sophistication suggests a state may have been involved in creating it, Western cyber security companies said.

Kevin Hogan, Senior Director of Security Response at Symantec , said 60% of the computers worldwide infected by the so-called Stuxnet worm were in Iran, indicating industrial plants in that country were the target.

European digital security company Kaspersky Labs said the attack could only be conducted “with nation-state support.”

“Stuxnet is a working and fearsome prototype of a cyber-weapon that will lead to the creation of a new arms race in the world,” it said in a statement about the virus which attacks Siemens AG’s widely used industrial control systems.

The companies’ remarks are the latest in a series of specialist comment stirring speculation that Iran’s first nuclear power station, at Bushehr, may have been targeted in a state-backed attempt at sabotage or espionage.

“It’s pretty clear that based on the infection behavior that installations in Iran are being targeted,” Hogan said of the virus.

“The numbers (of infections in Iran) are off the charts,” he said, adding Symantec had located the IP addresses of the computers infected and traced the geographic spread of the malicious code.

At a cyber watch center run by the US Department of Homeland Security outside Washington, a US government official declined to be drawn out on reports that Bushehr was the main target.

“It’s very hard to understand what the code was developed for,” Sean McGurk, who runs the National Cybersecurity and Communications Integration Center, told reporters.

He said it was capable of taking over physical systems when a certain combination of Siemens software and hardware are present.

Source:http://tvnz.co.nz/world-news/virus-took-aim-iran-say-cyber-companies-3801106

6 effective tips to protect your computer from virus attacks

September 13th, 2010

#1 Do not download any programs from insecure websites.

It will be tough for some users because they can not judge which is the secure website and which is the malicious one. To get worse, there are so many free download websites on line. We can not make sure whether they have been protected or not. So the better way for doing this is to process the virus scan before downloading from these sites.

#2 Use common sense to detect virus.

It is useful to use common sense to detect virus on some occasions. Do not open any unknown email or attachment. For the suspicious emails, you should delete them immediately. For some attachments that with the.jpg suffix, you can not fall into their trap and click them. Once you click, you actually are clicking a malicious virus and your PC must be infected.

#3 Be careful about the fraud virus/tools.

Oftentimes you may get an email from a friend says that there is a dangerous and terrible virus and you had better send this email to your other friends, in case their PC get infected with it. It is no doubt that this email provides you fraud virus/tool which aims to fool you into buying some programs for solving this problem. This junk email does not only waste your time and money, but also bring grave harm to your computer.

#4 Get an excellent security program for protecting your PC.

I believe most computer users will do this. Here I am reminding you to run the completely virus scan especially when you just install your security tool for the first time. It may take some time, but the thorough virus scan will help you a lot in maintaining your computer security.

#5 Get a Fire Wall on your computer.

If you use your machine a lot and always connect to internet, then you need a Fire Wall to block the visits from strangers or hackers. If your system can not be protected effectively, your address, credit card number and other private information may be stolen online.

#6 Install an effective and real security tool on your PC.

Do not fall into the trap of some fraud tools which seem like real security tools. The more important thing is to keep your real guard program up-to-date. With the latest version and the strongest anti-virus protection, you can be at ease with your PC security.

Source:http://technology.ezinemark.com/6-effective-tips-to-protect-your-computer-from-virus-attacks-167b3679fc4.html

How To Prevent an Email Virus

September 12th, 2010

An email virus is normally sent in the form of an attachment but is a computer code that, when opened, will cause the virus to attack the computer and cause it to sometimes malfunction. Sometimes these viruses will high-jack information from the computer such as passwords, account information and contacts in the address books. The best way to prevent an email virus is to not open attachments unless they are from a verified source. Never log into an unfamiliar site just because the link seems familiar.

There are several good anti virus programs on the market today such as Norton, McAfee and several others that offer great protection. Another way to prevent an unknown malicious virus is not to double click on suspected spams.

Using a firewall will help keep most viruses from attacking the email account. Do a full virus scan on the computer at least once a month if not every two weeks. Stop an email virus regarding, not only guarding, the information on the individuals personal computer as well as those of other people. Email viruses are the most common kind of viruses today. They use part of a name that is known to an individual so that the unsuspecting person will answer.

Source:-http://www.jabberlounge.com/how-to-prevent-an-email-virus/222680/

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