Plus: A hacker finds an issue with Cloudflare’s systems that could reveal app users’ rough locations, and the Trump administration puts a wrench in a key cybersecurity investigation.

This week started off with a bang and just kept going. In the wee hours of Saturday night, TikTok cut off access to users in the United States ahead of Sunday’s deadline that forced Apple and Google to remove the video-sharing app from their app stores. While TikTok was dark, US users raced to get around the TikTok ban while several other unexpected apps saw their access to Americans severed as well. By midday on Sunday, however, TikTok access was already coming back in the US. By Monday night, newly inaugurated US president Donald Trump had signed an executive order delaying the TikTok ban by 75 days.

On Tuesday, Trump made good on his promise to free Ross Ulbricht, the imprisoned creator of the Silk Road dark-web market, where users sold drugs, guns, and worse. Ulbricht had spent more than 11 years behind ...