Books checked out from a library and terms searched on library computers can reveal a teenager’s questions about sexual orientation, a neighbor’s religious leanings, or a student’s political interests. Libraries across the country, particularly public libraries, make it part of their mission to serve the most vulnerable and underserved user groups, including users who are homeless, unemployed, or recent migrants or refugees. And when government agents come looking, these library users need librarians to have their back.
Libraries and librarians have long been stalwart guardians of the rights of free expression and inquiry. As part of their profession, librarians protect their users’ ability to access even the most controversial information and ideas free from government scrutiny. Since the passage of the Patriot Act in particular, librarians have purged user records when necessary to fight against unconstitutional government demands and pushed back against (unconstitutional) National Security Letters (NSLs). Librarians also stood with EFF and the ACLU when we worked to pass the California Reader Privacy Act in 2011.
With the recent election of President-elect Donald Trump, many libraries are rightfully worried about a renewed threat to their users’ privacy. If the incoming administration sticks to its promises to identify and deport millions of people, monitor individuals based on their religious beliefs, and expand libel laws, for example, libraries could receive unprecedented government requests for information on their users.
To that end, we recommend libraries ensure they’re taking the following steps as soon as possible to protect their users’ intellectual privacy. In addition, libraries have to think beyond their own actions and take steps to ensure that all of their third-party vendors provide the same level of protections to users that libraries themselves do.
1. Limit collection and retention of user information
The less information you collect about your users, the less you have to surrender. The best policy is to collect the minimum amount of information necessary to provide a particular service, and don’t retain that information any longer than necessary. For example, delete check-out information as soon as a book is returned. Further, make a regular habit of purging your logs (including circulation records, event attendance records, computer use and activity logs, search records, Wi-Fi connection logs, database searches, etc.) using a secure deletion utility. If you do need to retain certain records—for example, usage records for resource allocation or funding advocacy—then follow best practices to de-identify and anonymize them to the greatest extent possible.
When you do collect user information, make sure your users are notified about that information collection and offered the option to affirmatively opt in. Further limit data collection by allowing pseudonymous or anonymous use of library services wherever possible. For example, allow people to use library computers without a personalized login, and don’t require logins on library web services unless it’s necessary to access a user account. Similarly, leave the library Wi-Fi network open, don’t keep logs of IP addresses, and ensure your network deletes connection logs immediately after log-off.
Make sure library operated websites and services aren’t logging user IP addresses, and if so, purge them quickly and regularly. Educate users about any differences between services provided in the library versus those services accessed remotely—for example, services accessed via library computers will only see the library’s IP address, while remotely accessing services can expose a user’s own IP address.
2. Maintain policies and procedures for responding to government requests and for notifying users of requests received
Communicate with users about how you will respond to requests for their information. Government requests for information may come in a variety of forms, from simple requests without a warrant or court order, to subpoenas, warrants, and NSLs. Policies must clearly dictate how library staff should respond to each of these requests. Make sure your staff knows how to handle requests for user information.
Note that, without a warrant, court order, or NSL, libraries are generally not required to provide user information, and may refuse to comply. While search warrants may be carried out immediately, all government requests for information may be examined by library counsel for legal defects. If you receive a request for patron information you should contact an attorney. EFF stands ready to help libraries sort through their options when they receive suspect legal process.
Policies should also address how and when users will be notified of government requests for information. In response to government requests accompanied by a gag order, some libraries, like the Internet Archive and the Library Connection, have fought to lift the gag. Again, EFF stands ready to assist.
3. Maintain accurate, accessible privacy policies, and notify users when they change
4. Use HTTPS for your whole website at all times, and push your vendors to do the same
While many libraries already use HTTPS on parts of their websites, this strategy is ineffective at securing user information. Use a service like Certbot to migrate your entire website to HTTPS, and push your third-party vendors—including e-book vendors—to do the same. Without such protections, your users’ information may be at risk in-transit and vulnerable to anyone logged onto the same network.
5. Secure library computer browsers
Unsecure browsers can leak information about what users are doing online—including the searches they run and websites they visit—providing a detailed picture of their online activity. Library computers should default to browsers with built-in privacy protections, like Mozilla Firefox or Google Chrome. Enable