T-Mobile says it found unauthorized access to data

The logo of T-Mobile Austria is seen on a map during a news conference in Vienna, Austria, February 25, 2016. REUTERS/Leonhard Foeger/Files

(Reuters) - T-Mobile US Inc on Monday acknowledged a data breach but said it was yet to find if any customer information has been compromised, a day after an online forum alleged that personal data of more than 100 million of its users was leaked.

The telecom operator said in a blogpost that it was confident the entry point used to access the data had been closed. It did not confirm the number of affected records.