Ticketplus: other users' details shown on the Tickeplus e-ticket site

At 07:00 on 28 September, Ticketplus changed the web page cache settings of its Tickeplus site to cope with traffic peaks. Afterwards, users who opened the same page at the same moment could see another user's details; a user's report at about 21:40 on the 29th revealed it. The service was stopped at 22:35, the setting fixed and the service reopened at 07:00 on the 30th. Names, emails, addresses, phone numbers, last 4 card digits and more of up to 107 people may have been shown to others. No unauthorized access was found.