Viruses, worms, natural disasters, malicious acts - the list goes on. From company information to personal passwords, data is critical for every business. But how often do we think that when disaster strikes - it won't happen to us? Often, we simply save our data on our PCs or laptops without any thought of who or what can attack it. But the simple truth is every one of us could be a victim.

The fact is - no protection system is foolproof. But we can take some simple steps to protect ourselves and create contingency plans.

Set up a firewall

An easy target for hackers is a business with an unprotected network. Some businesses think they are being protected by their ISP but you can never be sure so it's best to use a firewall or security system that filters data. Firewalls help you keep an eye on data that's coming in and leaving your business. It will prevent your employees from visiting sites that can leave your business open to attack.

Invest in anti-virus software

Another mistake businesses make is thinking that if they have a firewall - they won't need anti-virus protection or vice versa - the fact is you need both. Once you've bought virus protection make sure to update it regularly unless you have purchased software that updates automatically.

Create a password policy for your business

Unfortunately, you have to be cautious when giving employees access to your systems. Remember you could be the victim of a disgruntled employee. Make sure only a few people have access to important data. Also, get your employees to change their passwords on a regular basis - once every three months or so. Browsers can detect and track passwords so before you connect to the web, make sure you manage your passwords. PC users need to go to 'Tools' and select 'Internet Options', click on the 'Content' tab and click 'AutoComplete' to do this.

Back up your data

You've probably heard this one before but backing up is a must for every business. You can back up your data on CDs, tape or zip files and store them offsite. Find out about backing up your file registry - which is a database that contains all your computer settings.

Be wary of email attachments

The best policy to use with emails is not to open one if you're unsure. Computer viruses will spread using people's address books. If you receive suspicious mail, alert everyone in your company and don't forget to empty your trash. Files with extensions such as 'exe', 'vbs', or 'shs' are ones to watch out for.

Get the latest virus alerts

Microsoft regularly issues warnings against viruses, worms, trojans and patches to plug any holes that hackers might find in Internet Explorer.

Fight Spyware

There are several spyware scanners and cleaners available on the net. You can download the X Cleaner from Spyware.com or the site Spyware guide has a comprehensive list of privacy products you can buy.

Don't use public computers for personal transactions

One of the easiest ways for spyware or hackers to operate is to break in to vulnerable systems like public computers at Internet cafes. So stick to your personal computer when it comes to accessing personal information like checking your mail, using passwords to access your systems or even buying things over the web.