
Above: the cover of the administrative subpoena the DA of Suffolk county's office sent to Twitter seeking records related to Occupy Boston in December 2011.
When the government wants to listen in on your phone calls, it needs to take an oath to a judge affirming that it believes you are involved in criminal activity. If the evidence looks good, the judge will provide it with a warrant. When everyone used land lines to communicate, this system worked.
But now that most people travel with and use their mobile phones everywhere they go, law enforcement's interest in our telephones has changed substantially. Many times the actual spoken words --- the content --- of telephone conversations is less useful to investigators than are the transactional details of the calls you make. Transactional records show the GPS location from where calls were made, the numbers called, and the dates and times the phone was used. This information, held by phone companies, can often tell law enforcement a lot more than they'd be able to discern by listening to what you say over the phone. Unfortunately for our privacy rights, transactional data is also a lot easier for police to access.
In place of asking a judge for a warrant, federal and increasingly state and local law enforcement only need an administrative subpoena in order to compel telecommunications companies to hand over your private information. When testifying before Congress, Ava Cooper Davis, Deputy Assistant Administrator of the Office of Special Intelligence at the DEA, explained how her agency obtains these records:
When a criminal investigator acquires a telephone number for which the subscriber information is not immediately known, the investigator must first identify the telephone company (e.g., Verizon, Sprint, AT&T, etc.) that owns or controls that number. Once the telephone company is identified, the investigator will obtain an administrative subpoena, requesting subscriber name, billing information, and telephone toll records for a specific time frame.
Administrative subpoenas differ from traditional warrants because they are issued by agencies, not judges. Subpoenas are official letters demanding something of the target, either a demand that the target testify or that the target hands over something tangible, like phone records or a computer. Unlike warrants, subpoenas do not need to be based on evidence that there is probable cause to suspect a crime has been committed.
One of the reasons courts have allowed subpoenas without evidence of probable cause is because the subpoenas are issued directly to the holder of the records or to the person whose testimony is sought, and not seen as intrusive as search warrants executed by law enforcement. But when the subpoenas are sent to telecommunications or other third party information holders, the actual subject of the investigation often remains unaware of the intrusion into their private life, because they do not possess their own records --- the companies do.
Often the subpoenas ask that the company holding the records not disclose to the target, or the user, that their information is being subpoenaed. That was the case in December 2011 when the Sufflok county DA office in Boston requested information on Occupy Boston affiliated Twitter accounts. Twitter, acting responsibly as it has done in the past, did not comply with the DA's request and notified the users.
Twitter is an outstanding member of the corporate internet community in this regard, but other companies don't appear to make much of an effort to even inform people when the government requests their records.
In order to fix this problem, we need to update both state and federal law to reflect the kinds of communications technologies we use today. The subpoena model for call records may have sufficiently protected our rights in the 1980s, but it does not suffice today.
In 2008, the provisions of Massachusetts general law c. 271 section 17B were amended to expand the power of prosecutors in the state to obtain information about your private communications. Enacted as part of legislation addressed to preventing sexual abuse of children, and described as a tool to track online predators, the amendment of section 17B went much further. As amended, the law allows the attorney general or a district attorney to issue an administrative subpoena to telecommunications companies for transactional information concerning private communications if the prosecutor has "reasonable grounds to believe that [such records] are relevant and material to an ongoing criminal investigation." The recipient of such a subpoena is required to deliver the records to the attorney general or district attorney within 14 days. Although the statute expressly prohibits the disclosure of the content of electronic communications, the transactional and location-based data that can be obtained under the statute could reveal significant information about the activities and communications of Massachusetts persons.
We at the ACLU of Massachusetts are interested to learn how often agencies in Massachusetts are using administrative subpoenas, so we submitted a public records request to each district attorney and to the state attorney general, asking for records showing how and when they used this power over a three-year period. What we learned is alarming.
The responses to our requests showed that:
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