PARIS, Aug 14 (Reuters) - French taxpayers' data, both individuals and professionals, ‌were stolen in a cyberattack, ‌the French Finance Ministry said late on ​Thursday.

• A "malicious actor" claimed on Wednesday he broke into the tax agency, General Direction of Public Finances, in ‌late June, ⁠the ministry said in a statement.

• Investigations confirmed the ⁠cyberattack, which led to the consulting and extraction of taxpayers' data, the ​statement said.

• ​Further probes ​are ongoing to ‌determine which specific data and the exact number of taxpayers affected, the ministry said, adding further findings will be disclosed.

• "Users concerned will receive ‌individual information specifying the ​data that may ​have been ​consulted or extracted and, ‌where applicable, the precautionary ​measures to ​be adopted," the statement said.

• The data of 678,000 users was ​stolen, ‌said the French finance ministry later ​on Friday.

(Reporting by Inti Landauro;Editing ​by Elaine Hardcastle)