Computer Firewall, Why you need to have Firewall System to Your Computer

Your home Internet connection leaves you vulnerable to hackers who want to access your financial and personal information.

hackers can send malicious viruses and worms, blackening to your computer. Intruders have the power to destroy your operating system or gather you data. How can you lock that computer to hackers but still have the freedom to do your business online?

A solid firewall help you to stop intruders from accessing to your computer. You keep your Internet link to the outside world but the outside world can't view you unless you want allow to them. With a firewall in place you will still have typical email access, but chat and other interactive programs will require to have your permission to access before you can use them. A firewall is powerful and unobtrusive.

The path to your computer data has two doorways. Some of your data is stored on a physical media storage device- such as a hard drive, optical disk, thumb drive, or some other. The other method is your computer memory. If you open either of these storage methods leaves your network and your data vulnerable.
Now I'm going to show you some methods that hackers use to hack in to your system and you can avoid like these effort from hackers using firewall system in your computer:

• Method 01:IP spoofing

This attack occurs when someone outside your network fool your computer into recognizing the intruder as a trusted source-either a trusted internal source ( using an IP address that is within the range of IP addresses in your network) or a trusted external IP address that your system recognizes.

IP spoofing only can lunch when a hacker get your IP address. The hacker then modifies the packet headers on his communications to your computer. A packet header is present in any transfer of computer data and is similar to a routing number on a check-the header guides the packet of data on its journey just as a routing number guides a check.

• Method 02:Network Packet Sniffing.

Windows NT sends network packets as unprotected clear text, inadvertently allowing anyone to pick packets up en route for a closer look. Even though some packet sniffers are legitimate (for network management) others are used to steal your information while in transit. This method is a easiest way for attack some ones information.So many of hackers use it to achieve their hacking.

• Method 03:Man in the Middle

When someone accesses information between two individuals without either one detecting the infiltrator's presence. If both parties are using a public-key system to send data, the man in the middle can intercept the public key, and use it to steal your data.

• Method 04:Distribution of Sensitive Internal Information to External Sources

This attack could involve a disgruntled employee or someone who has or once had access to sensitive corporate information of theirs. The individual could place the sensitive data on an external computer so others can use it to have full access.

• Method 05:Password Attacks

Once someone has access to your user name and password, the attackers will then have the key to personal information. There are several ways an attacker can attack to your password. Some of them are Password Guessing , Brute Force and Password Cracking.

1) Password Guessing Method
Attackers can either enter guesses password and user names manually or electronically.If you use very common user and pass then this attack method is easy to hackers.

2) Brute-Force Login Method
This is also way password guessing, however, hackers use some tools to brute force your login.

3) Password Cracking Method
This attack lunch using Password Cracking software obtains the password file in Windows and after getting pass file then they use password decrypting tool to get your password.

Article Source: http://tutorial-net.blogspot.com/2008_05_03_archive.html#

Antivirus2009 - How to Remove Antivirus2009 Easily and Safely

If you are reading this article then your computer must be infected by Antivirus2009. Antivirus2009, Antivirus2008 and XP antivirus are categorized as rogue anti-spyware. They are very complicated viruses. What you see in your computer will be pop ups and annoying redirection when you are browsing. But did you know that they can also reveal your personal information, steal your credit card number and use it? Yes they can! Do not panic I will show you how to remove them quickly and safely now.

The first thing that you should do now is to go to my recommended sites and get a free scan there. You can use the free scan without registering or paying. I highly recommend you to do this before it is too late for you and your computer. What are those sites that I recommend? Those are sites of best anti-spyware which I used myself when my PC was infected by Antivirus2009. Now my PC is clean and error free. I am sure these sites will help you too.

How to prevent Antivirus2009 from entering your PC?

• When you download something from P2P network, be sure to scan it first, cause they might be infected by Antivirus2009 or other malicious spyware.
• Shareware and Freeware are Free for a surprising reason, they usually are bundled with spyware and malware. Be very careful.
• Be careful when you are browsing the internet. When you visit an infected site your computer will be at risk.

To remove the risks you need a top notch anti spyware. It will provide your computer real time protection from spyware and other malware. So you can browse the internet without worry. I have tested many anti-spyware and listed the best for you. I hope this can save you a lot of trouble.

Get your totally free scan here. These anti-spyware are award winning programs with certification from many third party consumer watchdogs. Join millions of satisfied users and free your computer from malicious software now.

Article Source: http://EzineArticles.com/?expert=Daly_Coleman

What is Hacking?

What is your definition of hacking? Most people think of the news stories that relate to big companies having embarrassing problems as their data is compromised. But in truth, hacking goes a lot further than this.

It doesn't always have to be someone you don't know who hacks into your systems and causes problems for your business. It could equally be someone who works for you that doesn't have your best interests at heart. This is because the basic meaning of hacking is when someone accesses some or all of your computer systems without permission. And it doesn't just happen over the internet.

       

Quite often, many people don't see how widespread computer hacking can be. Assuming that they are only in danger from internet based attacks means they may not be covered for all risks. Even those companies that do all they can to prevent hacking which occurs online may have unwittingly turned a blind eye to other dangers.

This is why an understanding of what hacking is and what it involves can help you to protect your own business more fully. But what do you do if you don't know all the ins and outs of the threats posed?

The easiest solution is to rely on an expert to make sure every potential hole is plugged, and no one can break into your systems. Network penetration testing is one of the best ways to see how good your computer network really is. If you do have vulnerabilities it's best to find out via someone who is honest and is looking for them to benefit you. If you assume everything is okay and it isn't, you could be in for a nasty shock at some point in the future.

It is probably because people limit their definition of hacking that some businesses are more in danger than they realize. Everyone likes to think that all their employees are working honestly and for the company's good, but it doesn't always pan out that way.

Supposing an employee was given notice to leave but they had until the end of the day to clear their desk. They could potentially do a lot of damage to your computer system before they left, if the mood took them that way. Even though you could have them arrested for their actions, the damage would still be done and it would take time to rectify.

An expert in the field of ethical hacking would be able to highlight any potential problems and solve them before anyone else had a chance to exploit them. And that is certainly a service that is worth paying for.

Don't make the mistake of thinking this should only be done once though. Hackers are constantly finding new ways into previously secure systems. If you employ a company to see how up to date your security measures really are, make sure you do it on a regular basis. If you don't, you still run the risk of being caught out.

Pure Hacking helps protect your Internet security by providing world-class penetration testing and ethical hacking risk management services. For a free consultation, please visit Ethical Hacking.

Article Source: http://EzineArticles.com/?expert=Rob_McAdam

Computer Firewalls

A firewall is a computer software that provides protection from hacking attempts from the Internet. It is very important to install a suitable firewall software to protect the computer from spyware and virus infections. A large number of security companies have developed firewall software. Some of these software are free for personal use.

A firewall software is basically a "packet sniffer". Data that gets transferred via the Internet moves in the form of packets. The firewall software intercepts these packets, analyzes its contents and determines if it is harmful to the computer. If the packet contains malicious content, the firewall blocks it from accessing code on the computer, thus preventing damage to the computer.

Most spyware, malware and virus programs can be prevented by installing a suitable firewall. Firewalls can also prevent software from accessing the Internet and transmitting information without the user's knowledge. Thus even if a virus program gets installed on the computer, it still won't be able to access the Internet and transmit sensitive information like credit card numbers, etc.

The latest version of Microsoft Windows i.e. Windows Vista has an inbuilt firewall in it. This means if you are using Vista, you don't have to download and install additional firewall software. However, if you still want to install a third party firewall, you can do that for added protection.

For maximum protection, it is advisable to invest in an "Internet Security Suite". This is a software bundle that combines a virus scanner, email scanner, spyware protection and a firewall. By installing such software, you can get complete protection from all sorts of malware programs that spread via the Internet.

More information: Free spyware removal

Article Source: http://EzineArticles.com/?expert=John_Browning

My Email is Missing - What Happened?

Let me tell you about my own experience with disappearing email. After rebooting my computer one day I went into my email program and discovered that all of the existing email folders, Inbox, Sent Items, Deleted Items, and other local folders I had created had just disappeared. I suspected that I may have downloaded some software which had caused the problem.

    

You see, I was trying to protect my system from spy ware infiltration and so I had downloaded one of the more popular "freeware" solutions, a certain "anniversary" version, to ensure my system was protected. I had been using the same program for a long time, but one of the "automatic update" processes prompted me to upgrade to the newest free version.

Assuming the software to be safe, I downloaded the upgraded version and installed it on my PC. Within a day or two I had the major problem with my e-mail program, somehow the local files containing emails from the Inbox, Sent Items, etc. were all wiped clean! Not only that, but my email program was no longer configured to connect to my internet service provider's POP server. I also noticed that my web browser home page was changed to the default!

Fortunately I'm somewhat of a computer geek and I was able to recover most of my missing emails (after a lot of work and research!), but after a couple more reboots it happened again!

Since the only thing that had changed about the PC was this "upgraded" anti spy ware software, I immediately uninstalled it and decided to buy some anti spy ware software instead. I'm sure glad I did, the new program discovered some things on my PC that had gone undetected by the other program. I haven't experienced an email loss or browser page alteration ever since! While this may or may not be the cause of disappearing emails on your system, you should consider what new software you may have recently downloaded from the internet as one of the possible causes.

JMDC has been a programmer for over 4 years, specializing in web-based applications. To avoid the hassle of having your email disappear, make sure you're running the right anti spyware by visiting Premier Antispyware for more information. If you'd like to know more about better spy ware software, click here.

Article Source: http://EzineArticles.com/?expert=Chuck_Ronson