*Negative SEO Attack!*... But NO Ranking Drop For 2+ Months... Should I Do.... Anything?

Hey all,
One of my niche sites is under attack. See the pics for the interesting anchors they are building and the sudden spike in links...


http://i.imgur.com/H3fsONr.gif


http://i.imgur.com/O6iWwfU.gif

Now, even though they have started doing this attack about 2 months ago, my rankings aren't lost at all.

So should I proactively disavow these links are do nothing?

99% of these are spammy comment, pingbacks and stuff, no real links.

Can google actually make out that this is a spam attack and that's why they are not tanking me?

What should I do? Any suggestions?

No need to be panicked. Wait for some more time and see whether the rankings are static or not

Also, one more details... most of them are nofollow links due to being trackbacks... I guess that's why we haven't been given the hammer.

Any other opinions? Should I disavow proactively?

Do not do disavow after disavowing you are put on ''googles black book'', you won't rank ever using PBNs etc after disavowing, because your site will be under the radar.

Yeah that makes sense I guess... why wake up the giant!

I guess one good thing is that by now Google probably recognizes a spammy attack...