Sky News has learnt of the growing threat Western governments and corporations are under from hackers based in China.
Cyber crime costs the UK tens of billions of pounds every year.
The attacks cannot be traced but I have gained access to some of the country’s growing number of hackers to discover just how big a risk they pose:
The man I meet is 21, he has no technical training and has moved to Beijing from a small town in southern China.
But within minutes of our meeting, he’s shown me how he can hack into my email account.
A few more clicks of his mouse, and he’s stolen my credit card details as I make an online purchase.
He says he’s a “cyber security expert” – not a hacker – but we can’t use his name and he refuses to show his face.