With so many computer hackers, viruses and of course the scammers destroying the enjoyment of the Internet, consideration should be given to a computer firewall. Data that is entering your computer should be challenged by a firewall. It stops your computer being prone to dangerous attacks that can negatively impact upon you.

The firewalls available vary widely and you must determine which type is suitable for your computer. Chances are that your firewall is already set up and ready to be used if you have a computer that came installed with the Microsoft XP or Vista operating system. You must check that it is turned on and working properly. If you do not have one of these later operating systems, then you need to purchase your own software. Owners of Microsoft XP may still want to purchase separate firewall software as the XP version doesn’t get great reviews.

You can either visit a store that sells computer software or download a Computer Firewall product through the Internet - the most popular products available are Norton, AVG and McAfee. The price of software varies depending on how sophisticated it is but there are also plenty of low cost versions available, even from the big name companies. Once in hand and prior to installing your firewall, you need to take a few things into consideration. The program must be configured to permit the functions that you need, such as file and printing sharing. The information supplied gives you all the settings you need to be able to configure the software during installation or at a later date.

Firewalls can limit access to certain parts of the Internet. Awareness of how you connect is important as if you use a local area network or a router, this could happen. Accessing secured networks when you have installed a firewall is difficult. A pc linked to a company network may require a specific settings configuration to allow you to connect a firewall to them and the company’s IT department should be able to advise you with this.

Even though there seems to be allot to know when installing a computer firewall the benefits far outweigh the work required to configure the firewall to work correctly on your pc. The risk of a malicious infection or a computer intruder is far worse than having to read software documentation to have your stand alone firewall work correctly.

Reference: Firewall

Botnets are networks of computers that hackers have infected and grouped together under their control to propagate viruses, send illegal spam, and carry out attacks that cause web sites to crash.

What makes botnets exceedingly bad is the difficulty in tracing them back to their creators as well as the ever-increasing use of them in extortion schemes. How are they used in extortion schemes? Imagine someone sending you messages to either pay up or see your web site crash. This scenario is starting to replay itself over and over again.

Botnets can consist of thousands of compromised machines. With such a large network, botnets can use Distributed denial-of-service (DDoS) as a method to cause mayhem and chaos. For example a small botnet with only 500 bots can bring corporate web sites to there knees by using the combined bandwidth of all the computers to overwhelm corporate systems and thereby cause the web site to appear offline.

Jeremy Kirk, IDG News Service on January 19, 2006, quotes Kevin Hogan, senior manager for Symantec Security Response, in his article “Botnets shrinking in size, harder to trace”, Hogan says “extortion schemes have emerged backed by the muscle of botnets, and hackers are also renting the use of armadas of computers for illegal purposes through advertisements on the Web.”

One well-known technique to combat botnets is a honeypot. Honeypots help discover how attackers infiltrate systems. A Honeypot is essentially a set of resources that one intends to be compromised in order to study how the hackers break the system. Unpatched Windows 2000 or XP machines make great honeypots given the ease with which one can take over such systems.

A great site to read up on this topic more is The Honeynet Project (http://project.honeynet.org) which describes its own site’s objective as “To learn the tools, tactics and motives involved in computer and network attacks, and share the lessons learned”.

What would you do if you had a complete data loss on your desktop computer? Would it bring you crashing to a stand still? For most people the answer would be yes. They do not consider their pc backup until it is too late and they have lost vital files and information that was essential to their computer working. Do you have your data backed up? It is important that you have systems in place, for your desktop computers and notebooks, should this ever happen to you.

Backups are essentially copies of important information. There are a few ways that you can back up your data as well as a few things to consider when doing a pc backup of your information. The ways you can backup data are: hard disc, server for LAN (Local Area Network), a partition and a database. There are a few products on the market that can help you with your backup plan.

Three of the best crucial memory backups are actually generic memory backups that you can find at many discount computer hardware stores and websites. One website in particular rates the top ten backup systems available on the market. This website is http://data-backup-software-reviewtopten reviews.com/. Three of their top rated back up plans for generic memory backups are: the Genie Background Manager (ranked the best overall), the Aconis True Image and the NTI Backup Tool. The Genie is sold for around $49.95 but does not have the backup capabilities that the NTI does. The NTI is $74.99 so you will pay less for the Genie.

You need to know the difference between a backup and an archive. The archive is the primary copy and backups are the secondary copy of your vital information. Before you make that purchase you will need to address: the RPO (Recovery Point Objective), the RTO (Recovery Time Objective) and the generic memory data security. You will also need to consider the system impacts, the bandwidth speed and the cost for initial installation and maintenance.

Once you have an understanding about how a pc backup works, you will be able to perform crucial memory backups that are absolutely essential if you do not want a system crash to leave you stranded. If you are unclear as to what is vital and what is not, then you can always ask someone that is computer savvy to help you out. Just make sure you do a backup as soon as possible.

Smitfraud is one of those super annoying spyware applications. While it does not tend to do a whole lot of harm to the computer it does make working on your system that much harder. Check out this Smitfraud Removal site for more info on the actual removal process.

Smitfraud has many different variants and it will infect your system differently depending on what variant you have. In most cases your desktop will of changed to an image that you did not select. This can be something simple or a pornographic image. We have even seen a few say tons of curse words and taunt people with statements like “You have been hacked %ot&e# !@#$%^”.

As well as your desktop taken over most people who are infected with Smitfraud find their home page has been hanged, they get constant re-directs and a fake security product that gives out bogus scan alerts. Check out this Smitfraud C Removal site for more information on that particular variant.

While Smitfraud and Smitfraud C do not destroy files on your computer it is often a sign that you have other spyware and viruses installed. You should take immediate action and get these variants removed. Waiting will only worsen the problem and deepen the infection.

Regardless of what method you end up choosing you need to take action today if you are infected. If for any reason you do not have protection you should get it soon as well. Remember no free client out there offers live upfront protection. They only kick in after you get infected. Only you can take the next step and get protected.

If we were to take a conversation about security, such as this one, and place in the context of a social setting twenty years ago, people would have thought that you were crazy. The issue of data computer security in our society has, by necessity, reached a higher level than ever.

Everything from credit card fraud to computer spyware has consumers wondering what they need to do to protect themselves. While much of the worry is well founded, the truth about what we need to do protect our assets can be a little cloudy. It’s hard to differentiate between rumor and fact and most of us aren’t technologically proficient enough to really understand how computer firewalls work or what they do for us.

Security Awareness

Start with the pc security shield. Your goal is to prevent others from accessing your data remotely. A combination of computer firewalls and antivirus PC security software can take your sensitive information from unprotected to secure with very little effort. A firewall can be considered your first line of defense when connected to the internet.

In order for information that is behind a firewall to be sent or received from your computer, permission must be granted by the firewall. You can set up your firewall to always grant access to programs you trust and always block access to programs you do not trust. You can also set the firewall to ask for your confirmation before granting access to an unknown program.

Antivirus software protects your computer from viruses that are transmitted over the internet and through file exchanges. A good antivirus program will continually monitor all of your file transfers. However, it is still advisable to fully scan your entire system for viruses once a week.

You can schedule this scan to run automatically while you are asleep or away from home. You will also need to sign up for automatic updates to the antivirus program, as new viruses are released daily.

Computer Firewalls

Set an administrative password even if you are the only user of your computer. This will prevent unauthorized parties from opening your desktop and looking through your files. The password should be easy to remember but difficult to guess.

If you want to allow house guests or friends to use your computer, create a separate guest account that does not have administrator access. Check online at Microsoft.com for instructions on setting up accounts or ask a computer-savvy friend for help.

Consider physical changes to make your entire computer less likely to be stolen. Store a laptop in a lockable cabinet or safe when not in use and be sure to actually lock the cabinet. You can also buy computer locks that are designed to lock your laptop or desktop computer to a desk or wall.

Be especially vigilant when traveling with your laptop. Consider installing GPS tracking on your laptop, always use a locking case, and keep the laptop in your hotel safe when not in use. A big part of security awareness is paying attention to things like this that could potentially go wrong.

Wireless Computer Security

As you are heightening your security awareness, it is important to remember that you need to back up your data. Security doesn’t just have to be about thieves. It can also be viruses that will cause your system to crash. Your information won’t be stolen, it will just be destroyed. Take the time to back up the files that are vital to your survival and keep them in a secure location.

Vigilance is the key in putting a computer security system to practical use. Developing good habits takes effort, but before you know it your new patterns will be second nature. Do not become paranoid about security, but allow new habits to ease your mind.