Here's your figure Pat McFadden has more or less word for word quoted.
Clearly this figure was estimated by the Director Of Technology, which after reading their extensive CV, I can't find any evidence that they have as much as managed to get a Javascript Alert box, to pop up, let alone understand the intricacies of getting an extensive Micro Services workflow to even start to manage all these look ups that need to happen.
You haven't even factored into the equation, that North Korea alone has 1 Department devoted to cyber security espionage, that is the entire size of our government IT security capability!