My site is experiencing a traffic drop since april 2013, the date matches with the massive botnet atack against wordpress that took place in that month:
Huge attack on WordPress sites could spawn never-before-seen super botnet | Ars Technica
WordPress hit by massive botnet: Worse to come, experts warn | ZDNet
I have detected at least 8 spammy/hacked sites pointing links to me from scraped posts published in April 2013.
I made a disavow several weeks ago but nothing happens, the traffic keeps droping. Is there a way to know if my site is infected in some way so that's the reason of the penalty? My code is clean and ther is no spammy outgoing links from my site, so I'm quite sure I am not hacked...