Top ten mistakes that computer users make:

01. Backup important data - A computer or its hard drive can fail at any time and without warning. When it does all your personal documents, letters, pictures, music, video, etc. is lost and in many situations cannot be recovered or costs a lot of money to be recovered. Make sure you have backups of all your important data so it is not lost when the computer fails.

02. Clean the computer clean! - Keeping the computer physically clean can help keep the computer running smoothly, help prevent issues such as overheating. While cleaning the computer, it's also a good idea to clean the data on the computer. Microsoft Windows users can run ScanDisk to check the hard drive for errors and Defrag to keep the data on the hard drive organized. It's also a good idea to go through the installed programs and uninstall anything you no longer use.

03. Don’t use the same username everywhere - Users often upload photos of themselves to an online library, but they use a username they use on other sites. They don’t realise that people can use Google to connect them across all the different worlds they visit, and then work out a way in.

04. Don’t trust public Wi-Fi - When you go on a public Wi-Fi network you have no way to determine whether it’s a real network run by a reputable company, or a fake run by a spotty guy next to you. The problem’s particularly bad on mobile, where you really can’t tell if you’re on a fake network set up to steal your data. If you’re going to use public networks for business, use a laptop, because the browser will warn you of security breaches - your phone won’t.

05. Don’t trust people you don’t know - We always tell people to do an ‘offline test’ - i.e. would you do the same thing if you were offline? So for instance, if you’re chatting to someone online, and you tell them some information, would you give that information to someone you’d just met in a cafe?,. ‘Online, you’re even LESS safe - because you may not be talking to who you think you are. People just seem to lose all concept of reality when they’re on a PC.

06. Use antivirus software - We can’t see any reason why you wouldn’t run AV software, it’s not a Holy Grail, but it helps you to deal with most known problems. Browsing without it is like driving without a seatbelt. It’s your first layer of defence.

07. Set everything to auto update - Attackers will be actively looking for vulnerabilities - not just in your operating system, but in your browser, in plug-ins such as Flash and Java. Be sure that all of those are up to date if you don’t, you are leaving security holes. Most updates don’t add functions, they just fix holes, and if you don’t get them, you still have the holes.

08. Installing a ton of different “freeware” applications that auto-start when the person boots their computer – then wondering why it’s slow.

09. Public - Not realizing pretty much everything you put on the web is public.

10. Titles - Not putting titles on documents - We have seen users desktops littered with “New Document 1, New Document 2, New Document 3, etc.” How can you possibly find anything like this?