Although Ishikawa describes the DMCA as a "flawed piece of legislation, one of BayTSP's primary services involves searching the Internet for copyright infringement and issuing DMCA takedown notices to the Internet service provider that acts as host to the disputed content.
Mr. Ishikawa's often sensationalist claims, such as "We can find a file posted five years ago and find every place it's posted now, and "We have 100 percent coverage of peer-to-peer file sharing, If you are illegally sharing copyrighted materials, we know who you are. combined with his self-admitted "hacker" background have caused some speculation as to the ethical tenets of BayTSP.
BayTSP does issue several thousand DMCA takedown notices per year to Internet users and providers suspected of hosting or distributing copyrighted material. Questions about the covert methods employed by BayTSP in the identification of copyrighted works and DMCA takedown process have generated hostility toward the company from the Internet file sharing community.