In the wake of leaked February statements by Twitter CEO Dick Costolo, the social media platform has rolled out a number of tools to help users deal with abuse, threats, and other rule-breaking content. However, those mostly consisted of improved reporting capabilities—meaning users may still see the nasty stuff; they could just tattle on it more efficiently.

That changed on Monday when Twitter quietly unveiled its first major filter for the service. After seeing the filter pop up in a post by tech entrepreneur Anil Dash, Ars confirmed with a Twitter spokesperson that "quality filtering" has gone live for a select number of "verified" Twitter users, so long as those users enable the option in the notifications settings of Twitter's iOS app.

The filter includes a brief explanation, saying that it "aims" to block any replies in the notifications tab "that contain threats, offensive or abusive language, duplicate content," or posts written by "suspicious accounts." The option does not further clarify what Twitter will characterize as "suspicious" or "offensive" content.

Twitter's "quality filtering" will replace the "tailored" option that verified users had. As of press time, we received no indication that unverified users—who can also choose "tailored" notifications on mobile apps—will have access to the filter in the near future. (That tailoring, as far as we can tell, was never advertised as a means of filtering offensive or mean-spirited content.) But if you're a verified user dealing with nasty Twitter replies, such as Curt Schilling, Ashley Judd, or Anita Sarkeesian, you'll soon be in luck.

As of press time, Ars staffers with verified Twitter accounts were unable to access the "quality filter." We have asked Twitter about how the filter works and whether we should expect a wider rollout in the near future, and we will update this report with any response.