RDN/YahLover.worm!055BCCA9FEC Infection

I get a tab that appears occasionally that buts a dialog box on my screen. Fortunately I can close the tab 

and there are not any apparent after affects

The primary text in the box are

firewall-qf5d2q.info days:

RDN/YahLover.worm!055BCCA9FEC Infection

Windows Defender Alert:Zeus Virus Decected on your computer

Do Not shut down or reset your computer 

The following data will be compromised if you do so:

passwords

Browser History

Credit Card Information

Local Hard Disk Files

 

Please call Microsoft to rectify the issue and get your PC unlocked. Toll

free helpline at 1-855-622-6395

 

I have not called the number for obvious reasons.

Does any one know what this is ? IS it real? HOw didi it get past Norton

 

Thanks

Dick