Take the 2-minute tour ×  I sell some .pdf files online. But
soon they are all over the web because after someone buys the
.pdf and puts it on various websites.  Is it legal to hack those
websites? Are there other ways to protect materials like .pdf
files?  share|improve this question Legaly? Ask a lawyer.
Ethically? For me the answer is no. Ask a lawyer to help you
with this. For the second question: Already thought about some
DRM? –  Uwe Plonus Jul 3 '13 at 10:49 @UwePlonus Doubt DRM would
help much. Removing DRM from PDFs is easy and it only needs to
be done by a single user who uploads the now DRM free PDF for
everybody to download. So only think DRMing does is annoying
legitimate customers. –  CodesInChaos Jul 3 '13 at 10:57 This
question appears to be off-topic because it is about legal
advice. –  Lucas Kauffman Jul 3 '13 at 11:06 add comment  closed
as off-topic by Lucas Kauffman, TildalWave, NULLZ, Gilles,
Xander Jul 3 '13 at 12:55   3 Answers  No, self-retaliation is
not legal. I am not a lawyer or e