How Big A problem Is Web Security?
If you visit a compromised web site
and your PC is missing the latest updates, you stand a good chance of ending up with
software on your PC that you didn’t ask for. The problem is that it isn’t going
to introduce itself and shake your hand! A bit like the neighbour you
didn’t invite to your barbecue, it came along uninvited and it’s going to make a nuisance of itself.
How Do I Know If My PC Is Infected?
You are unlikely to recognise that your PC has been infected straight away. Internet malware can sit there silently waiting for you to connect
to your online bank account so that it can steal your login details or send out so much traffic that it clogs up your entire network as we saw with one of our customers recently. Eventually though your PC will become unusable as more
malware gets downloaded at which point you need to call your IT support
company.
Which Are The Most Dangerous Web Sites
It's not just “Sex and Drugs and Rock and Roll” web sites that are potentially dangerous. According to a Symantec study in 2012, 61% of malicious web
sites are regular web sites that have been compromised and infected with
malicious code.
The Top 5 Most Exploited Web Site Categories - % Of Total
Number Of Infected Websites
1.
Blogs / Web Communications - 19.8%
2.
Hosting / Personal Hosted Sites – 15.6%
3.
Business / Economy – 10%
4.
Shopping – 7.7%
5.
Education / Reference – 6.9%
Whilst these figures are based on 2011 data, the percentages
won’t have changed much, and new around 9,500 malicious web sites are being found by Google every day.
How To Protect Your Computers Against Internet Malware
Home users need to make sure that their security is kept up-to-date. Make sure that you enable automatic updates for
Windows Updates and keep applications such as Java and Adobe Acrobat updated as well. Malware exploits bugs in software that is installed on your PC to
upload malicious code to your system, and regular updates are your best
defence. There is no need to shell out
large amounts of money for security software though. Microsoft Security Essentials is
free and good enough for home use.
If you are a business, the same principles apply, but you
need to take your IT security a little more seriously:
- Make sure that all Windows / Java / Adobe updates are applied to your computers on a weekly basis.
- Make sure you run commercial security software.
- Monitor your PC’s for tell-tale signs of trouble.
- Use web security software to block access to known infected sites as well as pornographic / illegal / non-business material
A little common sense also goes a long way. If you are asked
to click on a link in an email, or a Facebook / Twitter post, engage brain
before clicking. Is the person that it came from likely to have sent you a link
to ”Some hilarious pics of you”? If in doubt, don’t click!