Holiday firm Thomson has apologised to customers whose data was accidentally emailed to an unknown number of external organisations, however experts have warned this does not go far enough.
Some 500 customers found out their personal details, including their full name, home address and dates of their holiday, had been inadvertantly leaked by a Thomson employee.
In a statement, the company told IT Pro: "We would like to apologise to our customers involved and reassure them that we take data security very seriously and we are urgently investigating the matter to ensure this situation will not be repeated."
However, it seems that an apology is all the customers can hope to receive, with the BBC reporting that Thomson will not be offering compensation, nor allowing those affected to alter their bookings.
This is despite concerns criminals could get their hands on the leaked data and use the information to rob holidaymakers' homes while the properties are empty.
"Sorry is not good enough and I'm surprised they aren't doing more," Bola Rotibi, an analyst with Creative Intellect Consulting, told IT Pro.
"This wasn't a hack, it was a poorly implemented process, and the question remains as to who the email was supposed to go to and why this type of information wasn't encrypted," she added.
Rotibi pointed to Thomson's responsibilities under the Data Protection Act and said regulatory bodies should come down hard on the company.
UK data watchdog the Information Commissioner's Office (ICO) told IT Pro: "We are aware of an incident at Thomson and we will be making enquiries."
Email recall called into question
In its initial statement, Thomson said: "The error was identified very quickly and the email was recalled, which was successful in a significant number of cases."
However, just how successful this course of action could have been has been called into question.
Tony Pepper, CEO of encryption services provider Egress said: "I would be interested to see what [Thomson] used to do this.
"For example, the recall function in Microsoft Office only works on internal communications, otherwise it simply sends another message to ask that people don't open the [email] sent in error - which will often have the opposite effect, making people more likely to read the email than before to know why someone had tried to recall it."
IT Pro contacted Thomson to ask if it has any intention of doing more to help customers affected than just apologising, and if further information about how the breach occured will be forthcoming. However, the company did not respond.
