I have worked there and have to say that most of the stories i had heard about them are true.
Contracts are gained by placing spies inside client corporations, making friends with decision makers and bribing influencial people into lobbying for them.
They have become infamous for their underhandedness, ill-treating of employees, dodgy business practices (sometimes blatantly illegal) and hiring concubines as business managers, among other shady dealings.
If you are about to sign for them, think twice.