CipherCloud used DMCA Takedown on StackExchange discussion of their cryptography
Note that the answer below the question contains this link to the Google cache of the original article that was taken down:<p><a href="http://webcache.googleusercontent.com/search?q=cache:FYBbAFUycYQJ:crypto.stackexchange.com/questions/3645/how-is-ciphercloud-doing-homomorphic-encryption+&cd=1&hl=en&ct=clnk&gl=us" rel="nofollow">http://webcache.googleusercontent.com/search?q=cache:FYBbAFU...</a><p>There doesn't seem to be anything in there that looks like an infringement of anyone's copyright.