As Telemetry matures and we add more types of data we want to measure, it is important to keep track of what we're gathering and how we're respecting users' privacy. This page lists all of the types of data collected and links to any risk analysis done for the specific measurements.
The current list of histograms collected is in toolkit/components/telemetry/TelemetryHistograms.h
Instead of full reviews on each major type of measurement, a lightweight risk analysis should be performed to quickly document the question each measurement answers as well as actions taken to minimize privacy risks.
Histograms
Histograms that are collected by telemetry are listed in TelemetryHistograms.h, and ones that have review are also listed in the table below.
Reviewed Data
Data that's being collected and potentially has privacy implications undergoes a quick risk analysis. Data of this type is listed below including any outcomes from the risk analysis.
Get the lightweight-review template here
| Pending Measurement | Review Status | Notes |
|---|---|---|
| Encountered Plugin Types | [ON TRACK] open risks | not yet landed |
| Profile Age | [DROPPED] out of scope for telemetry | not yet landed |
| Default Browser Status | [RESOLVED] (19-Oct-2011) complete | not yet landed |
| Deployed Measurement | Data format/sample | Review Status | Notes |
|---|---|---|---|
| info.reason | "idle-daily" | not needed | It's always the same string |
| info.OS | "Darwin" | not needed | Short string (in UA) |
| info.appID | GUID identifier | - | - |
| info.appName | "Firefox" | not needed | (in UA) |
| info.appBuildID | "20110624030724" | - | Identifies date/time of build |
| info.platformBuildID | - | - | same as appBuildID |
| info.cpucount | "2" | - | number of cores, etc. |
| info.memsize | "2922" | - | RAM in megabytes |
| info.arch | "x86-64" | - | cpu architecture |
| info.version | "11.0.0" | not needed | os version (in UA) |
| info.device | "N810" | - | present on mobile only |
| info.manufacturer | "Nokia" | - | present on mobile only |
| info.hardware | "smdkc210" | [NEW] | Android hardware description (mfr code-name) |
| info.persona | "336461" (integer ID) | [NEW] | Present when a persona is enabled |
| info.addons | name/GUID/version of installed addons | [NEW] | Always present |
| simpleMeasurements.uptime | "22" | - | application uptime in minutes |
| simpleMeasurements.main | "1000" | - | milliseconds from startup in main() |
| simpleMeasurements.firstPaint | "2000" | - | milliseconds from startup to first paint |
| simpleMasurements.sessionRestored | "3000" | - | milliseconds from startup to session restore |
| simpleMeasurements.js.e4x | "0" | - | number of e4x objects created since browser startup |
| simpleMeasurements.js.setProto | "0" | - | number of times the __proto__ property has been set |
| simpleMeasurements.js.customIter | "0" | - | number of times a custom __iterator__ was used |