Burger King is the latest brand to have its Twitter account hijacked.
In the latest incident, US fast-food company Burger King said its Twitter account had been hacked after its profile picture was changed to a McDonalds logo.
Burger King's twitter account was used to tweet messages promoting rival McDonalds, which some posts said had bought the company, while other posts contained racial slurs, obscenities and references to drugs, the BBC said.
Burger King’s Twitter feed was filled with McDonald's promotions and golden arches were inserted into the account's masthead.
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Burger King said it had suspended its Twitter account and would post an apology on its Facebook page.
McDonalds has tweeted: "We empathize with our @BurgerKing counterparts. Rest assured, we had nothing to do with the hacking."
The news comes two weeks after Twitter reset 250,000 account passwords after a hacker attack on its systems the week before .
Twitter reset the passwords of 0.13% of its users as a precaution because of uncertainty about whether or not hackers had accessed the encrypted passwords of account holders.
Days after Twitter admitted the breach, it emerged the microblogging service planned to strengthen its login security with two-factor authentication.
The move is aimed at making it impossible for hackers to break into accounts, even if they obtain user passwords.