The original intention of the DMCA was to prevent copyright infringement. According to EFF, "the DMCA and DRM (digital rights management) have done nothing to stop 'Internet piracy'." Rather, the DMCA has become a threat to fair use, competition, innovation, free expression, and scientific research.
In MGM vs. 321 Studios, the DMCA was used to attack backup software, the research-oriented discussion of cryptology, and competitive innovation.
In Universal vs. Corley, a movie studio sued journalists who posted a link to DVD decryption software that had been posted on the Internet, making it difficult to even discuss the topic as a news story.
In Felten v. RIAA, the recording industry association threatened to sue academic researchers who had discovered and wanted to publish a paper discussing weaknesses in the cryptographic system used in the industry's recently standardized digital rights management.