As Elon Musk critics flee from Twitter, Mastodon seems to be the most common replacement. In the last month, the number of monthly active users on Mastodon has rocketed more than threefold , from about 1 million to 3.5 million, while total number of users jumped from about 6.5 million to 8.7 million. This substantial increase raises important questions about the security of this new platform, and for good reason. Unlike the centralized model of Twitter and virtually every other social media...

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