Staff cuts at the government agency that tackles cybercrime will leave British businesses vulnerable to attack from criminals and industrial espionage, experts say. It has emerged that the Serious Organised Crime Agency (Soca), formed last year, will have to shed up to 400 staff when the Home Office announces its policing budget this week. The move, which experts say lessened Britains defences, went ahead despite evidence that web-based threats to companies were escalting. Research released yesterday by Finjan, a web security company, highlighted an increased volume of cyber attacks on British companies from China.