Worst of all, the “control over your data” promised by the pop-up is on an opt-out basis, giving users choices only after Twitter has set their privacy settings to invasive defaults.

Instead, concerned users have to click “Review settings” to opt out of Twitter’s new mechanisms for user tracking. That will bring you to the “Personalization and Data” section of your settings. Here, you can pick and choose the personalization, data collection, and data sharing you will allow—or, click “Disable all” in the top-right corner to opt out entirely.