The warning comes from UK blue chip user group The Infrastructure Forum (Tif), which uncovered details of the scam from a meeting of its members.
Criminals are buying huge lists of email addresses over the internet and sending mass-mailings in the hope of receiving some ‘out of office’ auto-response emails from those office workers away on holiday.
They then cross-reference it with publicly available information from online directories such as 192.com or bt.com. The burglars can often discover the name, address and telephone number of the person on holiday.
Tif is warning users to tell their staff to be careful of the information put in an ‘out of office’ message.
‘You wouldn’t go on holiday with a note pinned to your door saying who you were, how long you were away for and when you were coming back so why would you put this in an email?,’ said David Roberts, chief executive at Tif.
‘Email is the most popular form of office communication but many people forget that the information contained in these messages can get into the wrong hands.’
Tif’s information security group has drawn up guidelines to avoid falling victim to the practice, including keeping messages bland; redirecting enquiries to another colleague; not giving out your job title; not saying you are away on holiday; not putting personal contact details in the email.
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