Really. You don't seriously think our government would allow, what was then, a British company sell weapons to an potential enemy without making sure they could defeat the system should the worse happen ?
There were three grades of system :
1. Best of breed - reserved for the MOD
2. Slightly...
I used to work for a defence contractor to the MOD. The company was issued an export licence for it's 'goods' to be sold to China just as long as the UK government had a back door into the system.
Over the years the companies I've worked for / with have used Global Switch. Not entirely sure what the big fuss is though.
I used to work for a Huawei Gold Partner and we sold Huawei firewalls - one of the best on the market and you get far more bang for your buck - but effing difficult to...