Well, that doesn't sound impossible. After all, it's what the dollars are attached to.
Think about it: if you want to implement an echo server that can't be cracked to view previous things it echoed, you could probably do it quite well. Now imagine I bring a billion dollars, and some more requirements, and I hire a few hundred people to work with you on this, and some of them are security consultants, and some are compliance guys who want the echoed text saved for compliance, and some others are privacy experts who want the echo text inspected by DLP software so that you aren't sending PII.
I rate former you more likely to succeed than latter you. In the first problem, it's technical. In the second, it's organizational.
Think about it: if you want to implement an echo server that can't be cracked to view previous things it echoed, you could probably do it quite well. Now imagine I bring a billion dollars, and some more requirements, and I hire a few hundred people to work with you on this, and some of them are security consultants, and some are compliance guys who want the echoed text saved for compliance, and some others are privacy experts who want the echo text inspected by DLP software so that you aren't sending PII.
I rate former you more likely to succeed than latter you. In the first problem, it's technical. In the second, it's organizational.