As long as you keep your-anti virus and anti-spyware software up to date you do not have to worry about it.

This paticular problem is more an adware and spyware exploit. This latest discovery is very similar to one from last month and nothing to be alarmed about. With an operating system as popular and complex as Windows it is a constant battle between the hackers and Microsoft.

Remember, keeping your operating system, anti-virus and anti-spy/adware up to date will keep you safe. The updates will happen automatically unless you prevent them by turning off automatic updates.

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Joe