We made 31 TikTok accounts registered as teenagers to see what the app shows young users.

Some got an unending reel of videos about sex and drugs.

Our @WSJ investigation is now live:
on.wsj.com/3z0uwhW
@WSJ Some highlights from this:

🔴 TikTok served one account registered as a 13-year-old at least 569 videos about drug use, references to cocaine and meth addiction, and promotional videos for online sales of drug products and paraphernalia.
🔴 TikTok also showed the Journal’s teenage users more than 100 videos from accounts recommending paid pornography sites and sex shops.
🔴 Hundreds of those videos were removed by TikTok after we shared them.

TikTok said the app doesn’t differentiate between videos it serves to adults and minors but said that the platform is looking to create a tool that filters content for young users.
🎥 This is second piece in our TikTok investigation. The first was this video, which broke down how the algorthim works and how quickly it figures out your interests and desires on.wsj.com/3E1WKfY
The latest story was a huge team effort. I got to work with the very best, including @rob_barry @georgia_wells @JohnWest. And our fearless leader: @csstewart!

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More from @JoannaStern

21 Jul
How does TikTok figure you out so well? How does it know that thing you never told anyone?

An insanely powerful algorithm.

We created dozens of automated TikTok accounts that watched thousands of videos to learn more.

Our @WSJ visual investigation: wsj.com/tiktokalgorithm
Some highlights of what we did and some stuff that I haven’t seen reported before:
🔴 The incomparable @rob_barry + @JohnWest designed a system with dozens of automated TikTok accounts. We gave these 🤖s hidden interests. That is, they rewatched videos with certain #s + images.
🔴 From this we learned, you only need to watch videos for the app to figure you out. You don’t have to give it any other info for it to get at your unspoken desires. You don’t need to like, follow, search. It doesn’t need to track you across the web. It just needs you to watch.
Read 9 tweets
26 Apr
Step 1: Start downloading iOS 14.5.

Step 2: Watch my exclusive interview with Apple’s Craig Federighi + read my column on all the privacy changes.

Step 3: Tap “Ask App Not to Track” or “Allow” over and over again.

on.wsj.com/3nlKoqS Image
This column is a result of weeks of testing apps with surprisingly compelling let-us-track-you prompts and talking to lots of people in ad industry

on.wsj.com/3nlKoqS Image
Whether you decide to let apps track you or not, us now having a choice is what really matters.

Also, in video you’ll find a great explaination from Federighi about why it says “Ask App Not to Track” vs. “Do Not Track” Image
Read 4 tweets
1 Feb
iOS 14.5 developer beta is out and it confirms that Apple is as frustrated as all of us about unlocking the iPhone with a mask on.
It includes a new feature: Unlock iPhone with Apple Watch while wearing a mask. If you are wearing a mask and have an unlocked Apple Watch on your wrist, you can unlock FaceID on your iPhone.
Of course this requires you have an Apple Watch.

The best long-term solution? What I wrote about last week and what Apple is working on behind the scenes: an iPhone with a fingerprint sensor in the display. on.wsj.com/3pzdALe
Read 4 tweets
6 Aug 20
Well, holy crap! Our @WSJ Amazon video series has been nominated for two Emmys! I’m beyond proud of these pieces for so many reasons. #NewsEmmys
@WSJ One nomination for our video that brought you inside Bangladesh factories supplying Amazon third-party sellers wsj.com/video/series/b…
@WSJ Another nomination for our video that explained the hidden safety risks of your Amazon order wsj.com/video/series/b…
Read 8 tweets

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