SAN FRANCISCO — Have you ever wondered whether you have fallen prey to a Russian misinformation campaign? Soon, you will be able to find out.

Facebook said on Wednesday that it planned to roll out a new tool later this year to help figure out if that new page you followed on Facebook or account you added on Instagram was secretly being run by Russia’s troll army.

The tool, which you will find through a newly created portal on your Facebook or Instagram page, is part of an effort to “protect our platforms and the people who use them from bad actors who try to undermine our democracy,” Facebook said in a blog post.

The social network is trying to assuage critics who said Facebook did not do enough to stop Russian propaganda from spreading on its platform ahead of the 2016 presidential election. The social media giant, along with Twitter and Google, were grilled by lawmakers on Capitol Hill several weeks ago about their role in the election and the unintended consequences of their technology.