White House employees received a warning not to use privileged information for betting on prediction platforms, the administration of President Trump announced.

The warning comes at a time when betting platforms are gaining enormous popularity in American politics. Workers who have access to confidential information about government decisions can gain an advantage when betting on outcomes.

The practice of using insider information for financial gain is legally prohibited, and violators face criminal charges and termination from employment.

Betting on political outcomes became especially popular during the conflict with Iran, when prediction markets recorded record activity around questions of ceasefire and military operations.