The honeymoon is over for the ride-hailing company. The same goes for Twitter and Facebook.

This is when things went from bad to worse. We learned Facebook, Twitter and the rest of social media were used as propaganda tools by Russia, North Korea, Iran and other countries hoping to interfere in the US elections. The #MeToo movement exposed sexual harassment and other bad behavior throughout Silicon Valley. And Uber's self-driving car killed someone.

If the middle of the decade was when things started to go wrong, this is when the turn became unmistakable.

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Politicians who'd spent years cozying up to tech execs like they were rock star icons of the American dream were now threatening to write laws to rein them in. The US Federal Trade Commission, the Department of Justice and congressional committees began taking a hard look at whether the privacy failures at Facebook and Google were illegal.

The span from 2017 to 2018 was when America's love affair with the tech world faded.

The do-gooder persona cultivated by executives like Facebook CEO Mark Zuckerberg, Twitter chief Jack Dorsey, Google head Sundar Pichai and so many others fell apart. In its place, we saw execs seemingly clueless about the rampant abuse on their platforms.

This is the third part of our series about the biggest tech scandals of the decade. Part 1 focused on, among other things, Apple Maps, Netflix's price hikes and Edward Snowden's revelations about the National Security Agency. Part 2 covered GamerGate, Theranos and Samsung's Galaxy Note 7 fires.

Now we look at the fallout from tech's failure to effectively self-govern.

We want to hear from you. Let us know which scandal you think was the worst and why.

Kiss your Social Security number goodbye
Credit-monitoring service Equifax, the company you usually go to when you've lost your personal information, managed to get itself hacked, losing 145.5 million Social Security numbers.

Then there was the company's initial reaction, which directed you toward signing up for its own credit check service and at the same time potentially waiving your right to a lawsuit (the company said that wasn't the case).

The incident cost Equifax's CEO his job, and in turn he blamed a single person and "a bad scanner" for the hack.

And if that wasn't fun enough, the company fumbled its payout to affected consumers. Because of course it did. (But you still have time to sign up for a money payout or 10 years of free credit monitoring. Here's how.)