Endpoint detection and response (EDR) tools, and the analysts using them, have become incredibly effective. They have become so good, in fact, that we're now seeing a clear shift in adversary behavior: attackers are being pushed off the endpoint and onto places where EDR cannot run. This isn't just a theory. As I was writing a separate blog about a recent Cisco exploit which spurred an immediate CISA emergency directive, news dropped about another major network edge vendor, F5.