I did some further analysis: Looking into the [events sent now vs. beginning of December 2020](https://console.cloud.google.com/bigquery?sq=1018637472215:97b8d238005d469da0bec90e3d847e22) there has been a significant increase in `security.unexpectedload` events. It seems this started to happen on 2020-12-15, [the day FF 84] was released. It appears that also recent versions (85, 86) send a significant higher number of these event pings: https://sql.telemetry.mozilla.org/queries/77523/source#193018 Looking at the change log, [`security.unexpectedload` events have been added a while ago (2020-08-30)](https://searchfox.org/mozilla-central/source/toolkit/components/telemetry/Events.yaml#2167) and have been sent in earlier versions. I'm not entirely sure what changed in recent versions that account for this significant increase.
Bug 1684920 Comment 2 Edit History
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I did some further analysis: Looking into the [events sent now vs. beginning of December 2020](https://console.cloud.google.com/bigquery?sq=1018637472215:97b8d238005d469da0bec90e3d847e22) there has been a significant increase in `security.unexpectedload` events. It seems this started to happen on 2020-12-15, [the day FF 84] was released. It appears that also recent versions (85, 86) send a significant higher number of these event pings: https://sql.telemetry.mozilla.org/queries/77523/source#193018 Looking at the change log, [`security.unexpectedload` events have been added a while ago (2020-07-08)](https://searchfox.org/mozilla-central/source/toolkit/components/telemetry/Events.yaml#2167) and have been sent in earlier versions. I'm not entirely sure what changed in recent versions that account for this significant increase.
I did some further analysis: Looking into the [events sent now vs. beginning of December 2020](https://console.cloud.google.com/bigquery?sq=1018637472215:97b8d238005d469da0bec90e3d847e22) there has been a significant increase in `security.unexpectedload` events. It seems this started to happen on 2020-12-15, [the day FF 84] was released. It appears that also recent versions (85, 86) send a significant higher number of these event pings: https://sql.telemetry.mozilla.org/queries/77523/source#193018 Looking at the change log, [`security.unexpectedload` events have been added a while ago (2020-07-08)](https://searchfox.org/mozilla-central/source/toolkit/components/telemetry/Events.yaml#2167) and have been sent in earlier versions. I'm not entirely sure what changed in recent versions that account for this significant increase. The `event_map_values` for these events look mostly like: ``` contenttype: TYPE_STYLESHEET remotetype: web filedetails: unknown ```