Further details have emerged about when and how much Facebook knew about data-scraping by the disgraced and now defunct Cambridge Analytica political data firm.

Last year a major privacy scandal hit Facebook after it emerged CA had paid GSR, a developer with access to Facebook’s platform, to extract personal data on as many as 87 million Facebook users without proper consent.

Cambridge Analytica’s intention was to use the data to build psychographic profiles of American voters to target political messages — with the company initially working for the Ted Cruz and later the Donald Trump presidential candidate campaigns.

But employees at Facebook appear to have raised internal concerns about CA scraping user data in September 2015 — i.e. months earlier than Facebook previously told lawmakers it became aware of the GSR/CA breach (December 2015).

The latest twist in the privacy scandal has emerged via a redacted court filing in the U.S. — where the District of Columbia is suing Facebook in a consumer protection enforcement case.

Facebook is seeking to have documents pertaining to the case sealed, while the District argues there is nothing commercially sensitive to require that.

In its opposition to Facebook’s motion to seal the document, the District includes a redacted summary (screengrabbed below) of the “jurisdictional facts” it says are contained in the papers Facebook is seeking to keep secret.

According to the District’s account, a Washington, DC-based Facebook employee warned others in the company about Cambridge Analytica’s data-scraping practices as early as September 2015.

Under questioning in Congress last April, Mark Zuckerberg was asked directly by congressman Mike Doyle when Facebook had first learned about Cambridge Analytica using Facebook data — and whether specifically it had learned about it as a result of the December 2015 Guardian article (which broke the story).

Zuckerberg responded with a “yes” to Doyle’s question.

Facebook repeated the same line to the U.K.’s Digital, Media and Sport (DCMA) committee last year, over a series of hearings with less senior staffers.

Damian Collins, the chair of the DCMS committee — which made repeat requests for Zuckerberg himself to testify in front of its enquiry into online disinformation, only to be repeatedly rebuffed — tweeted yesterday that the new detail could suggest Facebook “consistently mislead” the British parliament.

This important new information could suggest that Facebook has consistently mislead the @CommonsCMS about what it knew and when about Cambridge Analytica https://t.co/cqEayIMCTG — Damian Collins (@DamianCollins) March 21, 2019

The DCMS committee has previously accused Facebook of deliberately misleading its enquiry on other aspects of the CA saga, with Collins taking the company to task for displaying a pattern of evasive behavior.

The earlier charge that it mislead the committee refers to a hearing in Washington in February 2018 — when Facebook sent its U.K. head of policy, Simon Milner, and its head of global policy management, Monika Bickert, to field DCMS’ questions — where the pair failed to inform the committee about a legal agreement Facebook had made with Cambridge Analytica in December 2015.

The committee’s final report was also damning of Facebook, calling for regulators to instigate antitrust and privacy probes of the tech giant.

Meanwhile, questions have continued to be raised about Facebook’s decision to hire GSR co-founder Joseph Chancellor, who reportedly joined the company around November 2015.

The question now is if Facebook knew there were concerns about CA data-scraping prior to hiring the co-founder of the company that sold scraped Facebook user data to CA, why did it go ahead and hire Chancellor?

The GSR co-founder has never been made available by Facebook to answer questions from politicians (or press) on either side of the pond.

Last fall he was reported to have quietly left Facebook, with no comment from Facebook on the reasons behind his departure — just as it had never explained why it hired him in the first place.

But the new timeline that has emerged of what Facebook knew when makes those questions more pressing than ever.

Reached for a response to the details contained in the District of Columbia’s court filing, a Facebook spokeswomen sent us this statement:

Facebook was not aware of the transfer of data from Kogan/GSR to Cambridge Analytica until December 2015, as we have testified under oath In September 2015 employees heard speculation that Cambridge Analytica was scraping data, something that is unfortunately common for any internet service. In December 2015, we first learned through media reports that Kogan sold data to Cambridge Analytica, and we took action. Those were two different things.

Facebook did not engage with questions about any of the details and allegations in the court filing.

A little later in the court filing, the District of Columbia writes that the documents Facebook is seeking to seal are “consistent” with its allegations that “Facebook has employees embedded within multiple presidential candidate campaigns who… knew, or should have known… [that] Cambridge Analytica [was] using the Facebook consumer data harvested by [[GSR’s]] [Aleksandr] Kogan throughout the 2016 [United States presidential] election.”

It goes on to suggest that Facebook’s concern to seal the document is “reputational,” suggesting — in another redacted segment (below) — that it might “reflect poorly” on Facebook that a DC-based employee had flagged Cambridge Analytica months prior to news reports of its improper access to user data.

“The company may also seek to avoid publishing its employees’ candid assessments of how multiple third-parties violated Facebook’s policies,” it adds, chiming with arguments made last year by GSR’s Kogan, who suggested the company failed to enforce the terms of its developer policy, telling the DCMS committee it therefore didn’t have a “valid” policy.

As we’ve reported previously, the U.K.’s data protection watchdog — which has an ongoing investigation into CA’s use of Facebook data — was passed information by Facebook as part of that probe, which showed that three “senior managers” had been involved in email exchanges, prior to December 2015, concerning the CA breach.

It’s not clear whether these exchanges are the same correspondence the District of Columbia has obtained and which Facebook is seeking to seal, or whether there were multiple email threads raising concerns about the company.

The ICO passed the correspondence it obtained from Facebook to the DCMS committee — which last month said it had agreed at the request of the watchdog to keep the names of the managers confidential. (The ICO also declined to disclose the names or the correspondence when we made a Freedom of Information request last month — citing rules against disclosing personal data and its ongoing investigation into CA meaning the risk of release might be prejudicial to its investigation.)

In its final report, the committee said this internal correspondence indicated “profound failure of governance within Facebook” — writing:

[I]t would seem that this important information was not shared with the most senior executives at Facebook, leading us to ask why this was the case. The scale and importance of the GSR/Cambridge Analytica breach was such that its occurrence should have been referred to Mark Zuckerberg as its CEO immediately. The fact that it was not is evidence that Facebook did not treat the breach with the seriousness it merited. It was a profound failure of governance within Facebook that its CEO did not know what was going on, the company now maintains, until the issue became public to us all in 2018. The incident displays the fundamental weakness of Facebook in managing its responsibilities to the people whose data is used for its own commercial interests.

We reached out to the ICO for comment on the information to emerge via the Columbia suit, and also to the Irish Data Protection Commission, the lead DPA for Facebook’s international business, which currently has 15 open investigations into Facebook or Facebook-owned businesses related to various security, privacy and data protection issues.

An ICO spokesperson told us: “We are aware of these reports and will be considering the points made as part of our ongoing investigation.”

Last year the ICO issued Facebook with the maximum possible fine under U.K. law for the CA data breach.

Shortly after, Facebook announced it would appeal, saying the watchdog had not found evidence that any U.K. users’ data was misused by CA.

A date for the hearing of the appeal set for earlier this week was canceled without explanation. A spokeswoman for the tribunal court told us a new date would appear on its website in due course.

This report was updated with comment from the ICO.