Spectrum act for musics and movies rights owners only. Therefore, it's clearly not your cheat table that is the cause of it.
This being said, you generally need to have failed really badly to receive a DMCA notice just because of some download. I mean, your IP address need to be caught, what mean that you downloaded from a honey pot, not from a real pirate source ; or you used P2P without cautions.
But in the same time, Spectrum seem to be the biggest US company for this kind of things (searching for
DMCA quarantine
in google give them as first link). This mean that there's probably a lot of scam schemes implying them.
Their
You must be registered to see the links
talk about a reference number that you can enter in their portal, in order to know more about the DMCA you received. I easily see some guys faking notice and portal, just in order to stole your personal information. You're so freaked out by the notice, and by this "quarantine", that you blindly give all the information asked without thinking. You want to solve this issue as fast as possible, before you supposedly lost your access to internet, because it's clearly an error.
Therefore, they want your social security number ? You'll give them. They want your bank account number ? You'll give them. They want a picture of your wife naked ? Even this you'll give them. Anything as long as it solve this issue as fast as possible.
Well, when I say "you", I obviously talk about the people they target. Most of us would be suspicious, but if they persist to do those scam schemes since near to two decades now, it's because it works and make them earn a lot of money. There's a lot of people who just use internet to browse CNN, facebook and read their email, and that, because don't understand shit about all this, fall for those scams.
All this being said, I absolutely don't see why you would receive this notice in a tab of your browser, at least if it was a legit notice. I'm pretty sure that even in the USA, there's mandatory procedures for a notice to be legally valid ; procedures that do not include "randomly send the notice if the person happen to be browsing a particular website". What make me think that it's effectively just a scam and nothing more.
I can be wrong, but if I'm wrong, you'll receive the notice again, this time legally, therefore by email or postcard. If it's the case, just don't click on the link gave in the email. Copy/paste it in a text editor, or even in your browser by without validating. If it don't start by "
You must be registered to see the links
" just don't care about it, it's a scam.
But seriously, "put in quarantine" ? It's too fucking ridiculous to be true.