There is no justification for your client to even remotely think you should install this tool. - It's a massive breach of trust (I'd consider just asking for t

There is no justification for your client to even remotely think you should install this tool. - It's a massive breach of trust (I'd consider just asking for that tool a testament of no trust at all, irrepairable actually) - The job market gives them zero bargaining power If it comes "out of the blue" like you say, chances are it's being driven by a new guy. You'd do yourself and your client a huge favor by immediately, and visibly to all stakeholders, pointing out the idiocy of that guy's idea (remember, the trust is gone already, no need to sugar coat it then). Because there will be more of those ideas, if he's not interrupted, possibly harming the company in cataclysmic proportions down the road.