A message from chairman Colin Valentine was emailed to members this afternoon warning them the server that hosts www.camra.org.uk had been hacked “in mid-July”.
He stressed that no personal information had been accessed as the server that holds the membership database had not been attacked.
However, he added: “CAMRA members are being advised to remain vigilant and carry out sensible online and off-line precautions such as not using the same password for all your online accounts and checking bank statements for suspicious activity.
“CAMRA is seeking robust assurances that the security breach on the host server will not happen again and until it is confident about this a limited website service is being operated on a different server."
Websites and online services such as the Great British Beer Festival ticketing and staffing site, WhatPub and the Brewery Information System were taken down temporarily but should now be running as usual, Valentine said.