Exclusive: Mitt Romney, Tiger Woods HACKED

TMZ has learned ... the celebrity hackers who have been on a tear over the last few days have added new victims to their ever-growing list -- Mitt Romney and Tiger Woods.

The hackers obtained full credit reports for both men.  As for Mitt, the website has his social security number, phone numbers, as well as bank and other financial information.

As for Tiger ... ditto his social and what looks like complete financial data.

Also new on the list ... Kris Jenner and Stacia Hylton, Director of the U.S. Marshals Service.

HACKERS EEEH!

The hackers who obtained Michelle Obama's financial records -- along with some of the biggest celebs in the world -- aren't just seeking recognition ... law enforcement reported, they have been "using" the credit information.

No specific info on how the information has been used, but it could involve access and withdrawal of money.  As we previously reported, the hackers have obtained personal banking information as well as social security numbers and that could be enough to obtain withdrawals of cash.

The FBI has been "aggressively investigating" the case ... and it also strikes close to home, because one of the victims is FBI Director Robert Mueller. 

TMZ