Denotes an incident has been investigated, but the root cause continues to be unknown (an investigative issue is opened elsewhere) or an agreement has been formed to not pursue any further investigation.
Denotes a precipitating root cause of forward- or backwards-compatibility issues between subsequent releases of the software running concurrently, and sharing state, in a single environment (ie, Canary and Main stage releases)
Denotes a precipitating root cause of a failure resulting from a service or component which failed to scale in response to increasing demand (whether or not it was expected)
an incident where the SIRT team was engaged, generally via a request originating from the SIRT team or in a situation where Reliability has paged SIRT to assist in the mitigation of an incident not caused by `~RootCause::Malicious-Traffic`