My wife got a dodgy call today from some woman (probably from India) claiming to be from Digital Network Solutions, making some claim about our IP address accessing their servers or something. It wasn’t very coherent and she didn’t really appear to know what she was talking about, so the scam is obviously only going to work on people with no clue about I.T. so It didn’t go very far with my wife, and as soon as my wife said “my husband is an expert in this stuff, let me get him”, they hung up 
Having googled it I can see others reporting the same, and it seems the end goal is to try an d extort some “computer protection” fees out of you, so they are presumably trying to convince victims their computers are infected or hacked and just trying to collect card details.
While i’m sure readers of my blog would not fall for such a scam, you may have friends or family who might, so you might want to warn them.
Also just to make it clear to everyone, even if your computer was infected with malware and was attacking servers, the only information they would have is your IP address and from this they could find out your ISP and contact them to log a complaint. Your ISP is not allowed to give out your personal information to just anyone, so it would be up to them to contact you directly and let you know your system might be infected or potentially they would just turn off your broadband until it was resolved.
Apr 15, 2015 at 9:49 PM I just now got a call like this and they were trying to get me to push certain keys on my keyboard so I said How do I know that you aren't trying to hack me now? He said my entire screen was going to go black because my computer had been used to hack some servers. I am the only one who uses my computer and I would know how to hack my own email. Oh, these companies make me so angry!
Jun 5, 2015 at 3:21 PM I also received a call from one of these and my computer was badly infected so they fixed it for me & they just asked for £ 50
which I was not able to afford so they did it free of cost for me.And not only this when I contacted them back on their number so they again help me free of cost.