The idea of creating tamper-proof databases has captured the attention of everyone from anarchist techies to staid bankers.

In an age of nonstop breaches and hacks, here are ways to improve your online security based on your level of risk, from average user to NSA contractor.

Tailing a robotaxi for hours and hours is weird. And revelatory. And jealousy-inducing. But a driverless world is coming for all of us. So close the door and buckle up.