Diddy -- Someone Jacked My Credit Card Info.

Diddy is on a mission to find the person who stole the numbers to his personal American Express Black Card and posted them on a web site this week.

Earlier this week, someone who clearly has a beef with Diddy, posted copies of the rap mogul's super exclusive credit card on a website, along with his passport and private phone numbers.

The website where the info is posted seems to make a vague reference to the ridiculous rumors that Diddy is a member of the illuminati ... a secret society rumored to run the world.

Sources close to Diddy say he is aware of the situation and has launched an internal investigation to find the person responsible.

Official comment from Diddy's camp was not issued at press time.

However, having his card details posted on the internet is unlikely to affect Diddy's bank balance, earlier this year he was crowned the wealthiest artist in hip-hop, with a fortune of $475 million, beating Jay-Z - who has an estimated wealth of $450 million - to claim the top spot in a list compiled by Forbes magazine.

The rapper and producer's wealth is fuelled by his Sean John clothing brand, Bad Boy Worldwide record label and his vodka brand Ciroc - a joint venture with drinks brand Diageo - which generates his largest profit.