American cyber security behemoth Symantec suffered a breach of its systems in February but kept quiet about it even though passwords and a list of companies said to be its clients were stolen by an attacker.

The credentials of some 190,000 account holders at Docker Hub, the official repository for Docker container images, have been exposed due to "a brief moment of unauthorised access", the site says.

A new study suggests companies in the Asia-Pacific region are struggling to contain the cost of cyber breaches.