Computer viruses and other malicious software are the bane of many computer users. Viruses come in many different forms. Some simply cause your computer to stop working, while others destroy valuable data. Other viruses, such as keyloggers or trojans, allow hackers to steal private information such as online banking and purchase details. Protecting against such attacks can be done by taking a few simple and effective, yet essential steps.
Use Anti-virus Software
Although this may sound obvious, many computer users do not use an up-to-date anti-virus program. Anti-virus software not only cures problems, but it also prevents them. Keep your anti-virus software updated at all times.
Use Windows Update
Always install the latest Windows Updates when you are alerted. You can also configure your computer to install these automatically. Many updates fix security flaws in the operating system and other software.
Password Protection
Password-protect your computer and user account to prevent anyone else from using it without your permission. If you don't have to worry about others causing problems with your computer, you will be much safer.
Set Up Account Privileges
If your computer is shared among the whole family or by colleagues at work, ensure that only you have administrative rights. This way, others will not be able to change system settings or install potentially harmful software.
Back Up Your Data
Backing up your data regularly might not help to prevent attacks from malicious software, but it will keep your data safe from such attacks. Back up to another hard drive or a USB flash drive.
Be Wary of Email Attachments
Always be careful when you open email attachments. Some files, such as picture files, cannot contain viruses. If you are sent an executable file or anything else that looks suspicious, however, do not download it unless you are sure. Always be wary of email attachments from unknown senders.
Be Careful What You Download
Many virus infections come from downloading illegal programs such as key generators and other software to bypass copyright features. Not only is this illegal, but it can also harm your computer.
Only Download from Trusted Sites
When downloading files, always do so from trusted websites that you know. Your anti-virus software should warn you if it detects any malicious software included in a download, but you shouldn't rely on it.
Be Wary of Links Sent in Instant Messengers
Many instant messengers such as Windows Live Messenger are full of spam, and malicious users will often send automated invites and links. In short, avoid such communications with anyone you do not know.
Ensure that Your Firewall is Activated
Windows XP and above include a built-in firewall in the operating system. This is activated by default and it should not, except under some very special circumstances, be deactivated.