Today, the Colorado Supreme Court became the first state supreme court in the country to address the constitutionality of a keyword warrant—a digital dragnet tool that allows law enforcement to identify everyone who searched the internet for a specific term or phrase. In a weak and ultimately confusing opinion, the court upheld the warrant, finding the police relied on it in good faith. EFF filed two amicus briefs and was heavily involved in the case.

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Keyword warrants rely on the fact that it is virtually impossible to navigate the modern Internet without entering search queries into a search engine. By some accounts, there are over 1.15 billion websites, and tens of billions of webpages. Google Search processes as many as 100,000 queries every second. Many users have come to rely on search engines to such a degree that they routinely search for the answers to sensitive or unflattering questions that they might never feel comfortable asking a human confidant, even friends, family members, doctors, or clergy. Over the course of months and years, there is little about a user’s life that will not be reflected in their search keywords, from the mundane to the most intimate. The result is a vast record of some of users’ most private and personal thoughts, opinions, and associations.