While browsing the web pages if you are frequently getting redirected to http://www.PLAY-BAR.NET, in that case your system has been infected by browser hijacker. It is generally classified as a potentially unwanted program that is bundled with the software that is available online for free. On downloading or installing such software, the malicious program also gets installed along with it and the user does not even know that his system has been infected by this malicious program.