California Governor Jerry Brown has signed a cybersecurity law covering “smart” devices, making California the first state with such a law. The bill, SB-327, was introduced last year and passed the state senate in late August.

Starting on January 1st, 2020, any manufacturer of a device that connects “directly or indirectly” to the internet must equip it with “reasonable” security features, designed to prevent unauthorized access, modification, or information disclosure. If it can be accessed outside a local area network with a password, it needs to either come with a unique password for each device, or force users to set their own password the first time they connect. That means no more generic default credentials for a hacker to guess.

The bill has been praised as a good first step by some and criticized by others for its vagueness. Cybersecurity expert Robert Graham has been one of its harshest critics. He’s argued that it gets security issues backwards by focusing on adding “good” features instead of removing bad ones that open devices up to attacks. He praised the password requirement, but said it doesn’t cover the whole range of authentication systems that “may or may not be called passwords,” which could still let manufacturers leave the kind of security holes that allowed the devastating Mirai botnet to spread in 2016.

But others, including Harvard University fellow Bruce Schneier, have said that it’s a good start. “It probably doesn’t go far enough — but that’s no reason not to pass it,” he told The Washington Post. While the rule is only state-wide, any…

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