SAN FRANCISCO — In the latest prominent breach of a company’s computer network, hackers have infiltrated the online marketplace eBay, gaining access to the personal data of 145 million customers, the company said on Wednesday.

The hackers broke into an eBay database containing names, email addresses, birth dates, encrypted passwords, physical addresses and phone numbers.

There was no indication that the attackers obtained financial information such as credit and debit card numbers or gained access to customer accounts at PayPal, which is owned by eBay, said Amanda Miller, a company spokeswoman. The company has not seen evidence of fraudulent activity that could be linked to the breach, she said.

Still, hackers could use the stolen data for identity theft. Personal information — such as email addresses, passwords and birth dates — is regularly sold to criminals who use it for phishing or identity theft.