
Good luck to CS!
I'll get the popcorn while delta tries to recoup the loss for their negligence at accepting a single point of failure.
All endpoint security products are a single point of failure and it's part of the balance between security, relability and convenience. Working at a bank, we had a few issues with Netscaler, in which internet connectivity would be lost due to their MITM proxies suddently blocking some IPs. CS will have a day explaining how other companies were able to recover quickly and expose the incompetence of Delta IT systems. From this article, what Delta says is that a backlog in one system created a cascade effect on other of their systems because it was never considered a scenario.
Microsoft will also shrug this off and I wouldn't be suprised if the next time Delta needs to renew a contract with MS the cost will be materially higher.