“Twitter quietly ramped up a campaign last year to permanently delete some user data from its social media platform and the files of commercial firms using it, raising concerns that the policy would help Russian cyberspies suspected of meddling in the 2016 election cover their tracks.
“There was a ton of research showing that Twitter was the place spreading disinformation, just overwhelmingly manufactured information,” said Woolley, now director of the Silicon Valley-based Digital Intelligence Lab. “Many of us in the [cyber-research] community have made it clear to Twitter that to delete this information would be a travesty. We’ve been having this conversation for over four years” with people at various levels of Twitter, including senior executives.
Read more at Politico: Twitter urged firms to delete data during 2016 campaign