Both accounts were eventually deleted, but not before trying to get me to set up a crypto wallet and a “cloud mining pool” account. Knight and Marx confirmed to us that these accounts did not belong to them, and that they have been fighting impersonator accounts of themselves for weeks.
They are not the only ones. The New York Times tech journalist Sheera Frankel and Molly White, a researcher and cryptocurrency critic, have also experienced people impersonating them on Bluesky, most likely to scam people. This tracks with research from Alexios Mantzarlis, the director of the Security, Trust, and Safety Initiative at Cornell Tech, who manually went through the top 500 Bluesky users by follower count and found that of the 305 accounts belonging to a named person, at least 74 had been impersonated by at least one other account.
The platform has had to suddenly cater to an influx of millions of new users in recent months as people leave X in protest of Elon Musk’s takeover of the platform. Its user base has more than doubled since September, from 10 million users to over 20 million. This sudden wave of new users—and the inevitable scammers—means Bluesky is still playing catch-up, says White.
“These accounts block me as soon as they’re created, so I don’t initially see them,” Marx says. Both Marx and White describe a frustrating pattern: When one account is taken down, another one pops up soon after. White says she had experienced a similar phenomenon on X and TikTok too.
A way to prove that people are who they say they are would help. Before Musk took the reins of the platform, employees at X, previously known as Twitter, verified users such as journalists and politicians, and gave them a blue tick next to their handles so people knew they were dealing with credible news sources. After Musk took over, he scrapped the old verification system and offered blue ticks to all paying customers.
The ongoing crypto-impersonation scams have raised calls for Bluesky to initiate something similar to Twitter’s original verification program. Some users, such as the investigative journalist Hunter Walker, have set up their own initiatives to verify journalists. However, users are currently limited in the ways they can verify themselves on the platform. By default, usernames on Bluesky end with the suffix bsky.social. The platform recommends that news organizations and high-profile people verify their identities by setting up their own websites as their usernames. For example, US senators have verified their accounts with the suffix senate.gov. But this technique isn’t foolproof. For one, it doesn’t actually verify people’s identity—only their affiliation with a particular website.
Bluesky did not respond to MIT Technology Review’s requests for comment, but the company’s safety team posted that the platform had updated its impersonation policy to be more aggressive and would remove impersonation and handle-squatting accounts. The company says it has also quadrupled its moderation team to take action on impersonation reports more quickly. But it seems to be struggling to keep up. “We still have a large backlog of moderation reports due to the influx of new users as we shared previously, though we are making progress,” the company continued.
Bluesky’s decentralized nature makes kicking out impersonators a trickier problem to solve. Competitors such as X and Threads rely on centralized teams within the company who moderate unwanted content and behavior, such as impersonation. But Bluesky is built on the AT Protocol, a decentralized, open-source technology, which allows users more control over what kind of content they see and enables them to build communities around particular content. Most people sign up to Bluesky Social, the main social network, whose community guidelines ban impersonation. However, Bluesky Social is just one of the services or “clients” that people can use, and other services have their own moderation practices and terms.
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