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Facebook's poor care of customer data is driving users to social networks such as Mastodon

What makes Mastodon attractive, particularly in a post-#deletefacebook world, is its more protective attitude toward data and control - two issues that now bedevil Facebook.

Congress has asked CEO Mark Zuckerberg to explain how Facebook mishandled users’ personal data.
Congress has asked CEO Mark Zuckerberg to explain how Facebook mishandled users’ personal data.Read moreManu Fernandez / Associated Press

It's been a terrible week for Facebook, with policymakers and users alike demanding answers from the social network over its Cambridge Analytica fiasco, in which the data analysis firm improperly accessed the personal information of about 50 million Facebook users.

>> Read more: To keep data private, frustrated Philly users delete Facebook

But the backlash has had at least one major beneficiary. That's Mastodon, a Twitter-like social network that's had a massive spike in sign-ups this week. As the #deletefacebook movement has gained steam, people are registering for Mastodon at four times the rate that they normally do, according to Eugen Rochko, the service's creator.

Between Monday and Tuesday alone, Mastodon gained about 5,800 new users, Rochko said in an interview. That's more new registrations than what Mastodon typically sees over an entire week.

For a relatively new social network — Mastodon has 1.1 million users to Facebook's 2.2 billion – that may not sound very impressive. But what makes Mastodon increasingly attractive, particularly in a post-#deletefacebook world, is its attitude toward data and control — two of the same issues that now bedevil Facebook as it seeks to justify its data-hungry business model to outraged users.

Mastodon's code is open-source, meaning anybody can inspect its design. It's distributed, meaning that it doesn't run in some data center controlled by corporate executives but instead is run by its own users who set up independent servers. And its development costs are paid for by online donations, rather than through the marketing of users' personal information.

Designers such as Rochko are part of a wave of technological innovators who aimed to claw back some of the power that elites, such as Facebook chief executive Mark Zuckerberg, have spent the last decade amassing. Rooted in the idea that it doesn't benefit consumers to depend on centralized commercial platforms sucking up users' personal information, these entrepreneurs believe they can restore a bit of the magic from the Internet's earlier days — back when everything was open and interoperable, not siloed and commercialized.

Facebook's most important innovation, at least from a business perspective, was its aggressive collection and use of customer data for advertising purposes. Facebook not only gathers the information that we volunteer about ourselves, such as email addresses and birthdays, but also data that we generate simply by using the platform, such as likes, friend connections and more. This information, as we learned from Cambridge Analytica's whistleblower, can be extremely powerful in the wrong hands.

Facebook pledged this week to crack down on apps on its platform that may be leaking user data to third parties. But, in the end, that promise simply highlights how much of a say Facebook has over our digital fate — in some cases, it may be allowing our information to spread to who-knows-where, without our explicit knowledge.

How to keep an eye on our data as it moves from one owner to another is a tricky problem that Ryan Shea and Muneeb Ali have been working on since 2013. When the pair founded Blockstack, a new kind of app marketplace, they flipped the model on its head. What if, instead of trusting companies to hold all your data, the information always stayed with you, on your computer or a cloud storage provider of your choice? And what if, every time a new app wanted to access your data, you simply gave it a key that could decrypt all that personal information that you controlled? If you later decided the app was no good, you could just take back the key.

While that may not sound very distinct from, say, deciding whether to let Airbnb access your friends list on Facebook, Shea and Ali say that it makes a world of difference.

"There's no company in the middle that's hosting all the data," Ali explained. "We're going back to the world where it's like the old-school Microsoft Word – where your interactions are yours, they're local, and nobody's tracking them." Unlike Word, the apps on Blockstack come with all the powerful features of an Internet-native application. Two apps on the Blockstack marketplace already work this way: Graphite, a kind of decentralized version of Google Docs, and Stealthy, a decentralized messaging app.

What makes this model possible is the blockchain, the underlying technology that supports bitcoin. Many of us know bitcoin as a kind of digital cash, or a type of investment asset that's subject to wild price swings. But the supporting blockchain technology is a powerful record-keeping and transaction system that opens the door to much more than exchanges of money.

At its most basic level, a blockchain is essentially a list of authentic records that's publicly accessible to anybody. When it comes to matters of data and identity, you can think of it like an encrypted phone book: If you have the key that tells you the page where you can find a person and unlock his or her data, then you can see their phone number, email address, friends list and everything else that person wants to make available to you.

To be clear, under this model your data isn't stored directly on the blockchain; the key you provide simply points to the place on your hard drive or server where you've stored your data. At scale, this has massive implications for security and privacy. Rather than billions of people trusting big companies to store their information, that same information is spread out across billions of separate machines, making any single breach — such as the massive one that hit credit-reporting company Equifax last year — far less damaging. And it helps prevent companies such as Facebook from making unilateral decisions about how to handle your information.

"If that system is built and the technology is developed some of the issues we've seen related to data breaches, access to people's personal info – that would potentially improve," said Aaron Wright, founder of the Blockchain Project at Yeshiva University's Cardozo School of Law.

The blockchain enables other uses, too. Because the security of the blockchain is maintained by lots of computers working in concert to prevent fraud, some developers have built apps that take advantage of these computers' unused processing capacity to run entirely new, decentralized programs. That combined computing power can, well, power a Facebook without Facebook's corporate machinery or private infrastructure. By the same token, the blockchain could lead to an Uber without Uber, or an Airbnb without Airbnb.

Despite the promise of these ideas, the developers face enormous challenges. Given how dominant platforms such as Facebook are, encouraging users to switch away from those networks could be a massive hurdle, particularly if their friends don't follow.

Meanwhile, many of the newer services come with a steep learning curve or require some technical familiarity. Until developers can make the user experience as simple as handing over your data to Facebook with the click of a button, people are going to take the path of least resistance, experts say.

"The reality is that most people do not want to run their own Web servers or social network nodes," Chelsea Barabas, Neha Nerula and Ethan Zuckerman, three researchers at the Massachusetts Institute of Technology Media Lab, wrote in a recent Wired essay.

Still, the rising interest in decentralized social networks such as Mastodon shows there's growing appetite among Internet users for something — anything — besides the model laid out by Silicon Valley's biggest companies.
Unless Facebook wins back those users, disrupters such as Zuckerberg could someday become the disrupted.