HNB in their official facebook page said -
We understand that account details of some priority banking customers, have inadvertently been compromised by a promotional mailer sent to the priority banking customers on July 12th.
The Bank has withdrawn this promotional e-mail and the Board of Directors and the Management has initiated an internal investigation on this issue.
HNB allocates highest priority to this issue and regrets any inconvenience caused to its esteemed customers due to this inadvertent information release.
The Bank will do its utmost to safeguard the interest of the affected customers.