Google has admitted that its Home speakers recorded users at all times, even when they hadn't said "wake words" such as "OK Google," due to a security error earlier this year.
Following scrutiny for its data protection practices, Google will be taking an additional step to further guard user privacy by restricting the amount of data advertisers have access to.
The infamous demands for confidential records require no court approval and have previously come with a built-in gag order, but several rulings from the California have emboldened search giant Google to challenge the letters.
