Facebook scrubbed potentially damning Russia data before researchers could analyze it further

Facebook removed thousands of posts shared during the 2016 election by accounts linked to Russia after a Columbia University social-media researcher, Jonathan Albright, used the company's data-analytics tool to examine the reach of the Russian accounts. Albright, who discovered the content had reached a far broader audience than Facebook had initially acknowledged, said that the data had allowed him "to at least reconstruct some of the pieces of the puzzle" of Russia's election interference. "Not everything, but it allowed us to make sense of some of this thing," he said.

Facebook confirmed that the posts had been removed. But a spokesman said it was because the company had fixed a glitch in the analytics tool — called CrowdTangle — that Albright had used which provided "an unintended way to access information about deleted content." "Facebook is cooperating fully with federal investigations and are providing info to the relevant authorities," the spokesman said.