As it moves to clean up its act — or at least to show the public that it is trying — Facebook said it has suspended 200 apps in the initial phase of its response to the Cambridge Analytica data scandal.

A blog post this morning by Ime Archibong, VP Product Partnerships, declared “the investigation process is in full swing.” It described the probe’s two phases. “First, a comprehensive review to identify every app that had access to this amount of Facebook data,” Archibong wrote. “And second, where we have concerns, we will conduct interviews, make requests for information — which ask a series of detailed questions about the app and the data it has access to — and perform audits that may include on-site inspections.”

In March, founder and CEO Mark Zuckerberg announced the plan to root out apps that the company deems to be making improper use of user data. Cambridge Analytica, a research consultancy, was hired by the 2016 Donald Trump campaign and others in politics and, through a third-party Facebook app, gained insights into the electrorate through a trove of data from users. The revelations of the company’s methods set off a crisis for Facebook, dinging the stock of the social media giant and sending Zuckerberg on a media apology tour and rounds of testimony on Capitol Hill.

“There is a lot more work to be done to find all the apps that may have misused people’s Facebook data, and it will take time,” Archibong wrote. “We are investing heavily to make sure this investigation is as thorough and timely as possible. “