Conspiracy theories about 5G technology have become particularly problematic during the coronavirus pandemic. There have been 50 fires “targeting cell towers and other equipment,” in the Uk during the past month, according to the Associated Press. The conspiracy theories have been linked to anti-vaccine groups and Russian state media.

Twitter’s latest update is an expansion of the site’s previous rules around unverified info that can incite panic or social unrest, such as claims of food shortages that encourage panic-buying. Since then, the company says it’s removed more than 2,230 tweets with “misleading and potentially harmful content.”