Besides the immeidate tactical level, they have what may be the best anti-runner security of all: the knowledge that if you try anything, lose or win, you die. No expense will be spared, no time considered too long. AAA's cannot afford to allow even the idea of doing this successfully and getting away with it to be in the mind's eye of anyone. Think what we would do to a modern presidential assassin,and add dystopia.
Your lifespan may be measured in seconds, or it may be measured in years, but one day you're going to be grabbing some soy-cheerios and your brains are getting pasted to the wall. And if you're lucky, its only you who dies. As opposed to every one who was even vaguely connected to this effort, your fixer, your suppliers, your regular contacts, the accountant who set up the transfer,the disgruntled employee who told you there's a maintenance van that comes every Tuesday. if you so much as touched this three degrees of separation out the bell is tolling. If the corp is particularly mean, your family, friends, and pets all die as well.
And you damn well bet that when the AAA starts flexing that there's going to be a bunch of governments and lesser companies that are going to rush to prove they weren't involved.
Since runners prefer to live to spend their earnings, this is a non-starter.