Blackhat Google index problem

[Keosoft90]

i have problem in google webmaster
before i have 7000 index for my site
but today i check it . become zero
>< i dont know why ?
before i got many
Notice of DMCA removal from Google Search

any one know it ??

 

[Kurei]

Got the same problem with my site...Over 2k links down to zero but i got nothing of dmca removal...