The note also addresses how Facebook will approach challenges algorithmic bias, the idea that sensationalist news is some of the content people engage the most with, proactive content removal, regulation, and more.
"But at bottom, this is not about George Soros or the foundations".
As news of Facebook's use of Definers reached Capitol Hill, one senator implied that Facebook's efforts to push back against critics may add to the company's woes.
Facebook also planned next year to begin releasing content removal summaries quarterly in a tempo on par with earnings reports, according to executives.
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Sandberg said she and Zuckerberg had informed Congress, and law enforcement, of several traditional cyberattacks with ties to Russian Federation in the run up to election day in November 2016.
After the New York Times published a bombshell report detailing Facebook's efforts to smear its critics by deploying anti-Semitic conspiracy theories that are commonly spread right-wing extremists, Color of Change-the online racial justice organization that Facebook attempted to discredit as a "puppet" of billionaire philanthropist George Soros-issued a scathing statement on Thursday denouncing the tech giant for "using anti-Semitism as a crowbar to kneecap a black-led organization working to hold them accountable".
When criticism of its belated Russian Federation admission grew, Facebook mounted a lobbying campaign led by Sandberg. Facebook, Twitter, and other social media platforms have long faced criticism for choices on what content to take down and what to allow to stand. But to suggest that we weren't interested in knowing the truth or that we wanted to hide what we knew or that we tried to prevent investigations is simply untrue.
"I've come to believe that we shouldn't be making so many important decisions about free expression and safety on our own", founder and CEO Mark Zuckerberg said on a call Thursday. It encouraged journalists to look into links between Mr Soros and groups such as "Freedom from Facebook", a lobby firm that campaigns against Facebook.
Facebook responded by lobbying a Jewish civil rights group - the Anti-Defamation League - to publicly label that criticism as anti-Semitic, the Times said.
Facebook hired a Republican opposition research firm to discredit activists critical of the social network, according to the report.
Gaspard concluded his letter by asking Sandberg for a sit-down to hear what steps the company plans to take to "remediate the damage done by this deeply misguided - and unsafe effort carried out at Facebook's behest". Following the report, some U.S. lawmakers were already calling for more regulation of Facebook.