The person who effected the breach left a message about US President Donald Trump which could not be described as salutary.
The message was on the fast food giant's account for about 20 minutes and was pinned to the top, before it was deleted, the Chicago Tribune reported.
About an hour later, McDonald's's said in a tweet that it had been told by Twitter of the compromise.
Twitter notified us that our account was compromised. We deleted the tweet, secured our account and are now investigating this.— McDonald's (@McDonaldsCorp) 16 March 2017
One person tweeted that the NSA had located the suspect and posted a photo of the Burger King mascot below the claim.
A day earlier, the Twitter accounts of Justin Bieber and the news organisation Forbes were breached by individuals who appeared to have a sympathy towards Turkey.