Sesame Workshop is upping security measures around its social media accounts following Sunday's hack of "Sesame Street" star Elmo's X profile. The incident saw the beloved puppet sharing antisemitic messages and accusing President Donald Trump of being on the Epstein List.

"Elmo's X account was briefly compromised yesterday by an unknown hacker who posted disgusting messages, including antisemitic and racist posts. The account has since been secured," a spokesperson for Sesame Workshop, the nonprofit educational organization behind Sesame Street, said in a statement to ABC News on Monday.