Irish watchdog fines Instagram

LONDON — Irish regulators hit Instagram with a big fine after an investigation found the social media platform mishandled teenagers’ personal information in violation of strict European Union data privacy rules.

Ireland’s Data Protection Commission said Monday that it has decided to fine the company 405 million euros ($402 million), though the full details won’t be released until next week.

The penalty is the second-biggest issued under the EU’s stringent privacy rules, after Luxembourg’s regulators fined Amazon 746 million euros last year.

The Irish watchdog’s investigation centered on how Instagram displayed the personal details of users ages 13 to 17, including email addresses and phone numbers.