Over the last few years, hackers have been constantly making headline stories in the news by successfully breaking into what we believed to be the tightest digital fortresses on the planet like the FBI and CIA in the United States. Many reports suggested that most of the attacks carried out by even the most notorious hacktivist like Anonymous and Lulzsec, are simply a result of common website or computer security mistakes that could have been easily avoided. Basic vulnerabilities fix that could have saved the victoms millions of pounds.

Now, if hackers can easily break into a military-grade security, imagine how easy it is for them to get into your business’ or your own personal computers. To contain this issue, you can either spend hundreds of pounds on an anti malware software, or simply avoid these 5 common computer security blunders [Infographic by Symantec].