Last week, the United States Court of Appeals for the Seventh Circuit found, in U.S. v. Caira, that there was no reasonable expectation of privacy in an IP address and related subscriber information, allowing law enforcement to obtain that information from third­party communications companies without a warrant. Frank Caira was convicted of drug charges after the Drug Enforcement Agency traced his email address through administrative subpoenas to technology companies, which provided his subscriber information and IP login history. The decision shows that for all the criticism that has been heaped on it, the third­party doctrine is alive and well in many courts.