Musk talked about the doctoral thesis of the former head of security on Twitter, implying that the latter supported bad information.

Elon Musk, the new CEO of Twitter on Saturday, tweeted an excerpt from a published paper by Yoel Roth, former Twitter security director, suggesting that Roth supported child abuse.

Musk reportedly took part in an online Twitter campaign late Friday about messages against child abuse, and responded to a tweet from a participant on Saturday saying,"It looks like Joel supported children's access to bad online content in his doctoral thesis." "

Ross completed his doctoral thesis "Gay Data" at the University of Pennsylvania in 2016, which conducted research based on data from geographic Social networks service Grindr. Musk tweeted that the paper argued for children to be able to access adult Internet services, and attached a screenshot of the 300-page abstract of the paper. He suggested that the former Twitter executive supported child abuse messages, making Ross more vulnerable to "unfounded" online abuse.

In late October, when Musk had just completed his $44 billion acquisition of Twitter, he also expressed support for Ross until Ross resigned in November.

In recent days, Musk has frequently tweeted criticism of Twitter's former executives for managing the company. But his approach has met with some opposition. When Musk tweeted that Twitter had "refused to act on child abuse messages for years," former CEO Jack Dorsey, who is friendly with Musk, responded on Twitter that "it's all fake."