Facebook has admitted its staff have been able to read the passwords of millions of users.
The social media site says the glitch was discovered in January and has now been fixed.
Some passwords were apparently stored in a readable, unencrypted format.
It insists there is no evidence its employees abused access to any information, and that no one outside the company could see them.
Users of Facebook, Facebook Lite and Instagram are among those affected.
The firm says it plans to send notifications to anyone whose passwords were stored in this manner, but it won’t require they be reset.

Nakheel unveils new sustainable community beside Palm Jebel Ali
Dubai showcases latest innovations in electric, smart mobility
US sues Lyft, alleges discrimination against disabled riders
ADNOC Distribution reports $791 million net profit in first 9 months
Tesla to pull the plug on Cybertruck after years of poor sales
