There’s a new battle taking place on your computers and your phones that will shape how you use technology for years to come. Google is leading the charge—albeit it’s not alone, and Gmail will likely change more than any other platform. That means serious decisions for its 3 billion users, who are well advised to think before clicking “yes.”

We’re talking AI and the breakneck speed with which new tools are being stitched into the platforms and services we all use daily. Apple may have been hit with an unintended slowdown, but not Google and Microsoft. There’s no stopping them.

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Take your Chrome search history as an example. It’s surprisingly personal — what you search on the web and how you term those searches. But AI will be let loose on that history, if you let it, using this to get to know you better so it can help you more. But this isn’t an executive assistant, it’s a technology platform owned by the world’s most valuable marketing machine. Buyer beware, as they say.

Or how about Microsoft’s new (and seemingly automated) opt-in to having its own Copilot AI let loose on OneDrive. “Do you want Microsoft Copilot sniffing your OneDrive files?” PC World asks. “Too late. Allowing AI to sniff your cloud files may seem a little creepy, but Microsoft says it will only work with your authorization.”