[_aucc]

These systems are usually windows machines - typically "hardened" to various degrees (lock out USB keys etc) and protected by enterprise anti-virus solutions (mcafee, etc)

The windows build is typically a single "golden image" with a known checksum that can be blasted down to machines over wan/lan during the evening.

Source: I used build and deploy the image to many thousands of POS systems at Dixons Store Groups retail chains (UK)

[rosswilson]

Doesn't DSG use their own custom made EPOS system? Eclipse? Do you have any experience with it and their security policies?

I've had quite a few experiences as a customer at PC World when they've had "till failures" - ironic for a computer store. They often blame head office for overnight updates gone wrong.

[raverbashing]

Well, didn't work as it should then.

"Enterprise anti-virus" what a joke. Put the lawyers to work

Also, they apparently forgot to firewall it to only their internal network.