| Google Nest Mini (2nd Gen)
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Security Grade
Calculator v1
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Google Nest Mini (2nd Gen)
Release Date: 2019-10-22 • Status: End of sale
Classification Date: 2026-10-21
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Security Evaluation
1. Device Security
| Criterion
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Value
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Proof
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Comment
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| Known hardware tampering
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Rare
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—
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No public hardware-tampering case specific to the Nest Mini was found; the device has no debug interfaces exposed to end users.
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| Known vulnerabilities
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Rare
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—
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NVD returns very few device-specific entries for Nest speakers; most Google CVEs concern Chrome/Android, and the speaker is patched through the Cast/Home platform rather than per-CVE firmware releases.
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| Prior attacks
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Rare
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—
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No Nest Mini entry in CISA KEV; publicly reported incidents were account-level (credential stuffing against linked accounts) rather than device exploitation.
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| Updatability
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Very common
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Firmware is updated silently and automatically by Google; there is no user-visible version pinning or opt-out.
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| Category Score
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Score: 2 / 3
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2. System Security
| Criterion
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Value
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Proof
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Comment
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| Authentication with other systems
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Full
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Device is provisioned into a Google Account home with per-member and per-device permissions, and brokers Matter/Works-with-Google integrations.
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| Communications
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Encrypted with up-to-date encryption
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Cloud and local Cast traffic use TLS with certificate validation, and the device requires an authenticated Google account to provision.
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| Storage
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Encrypted with up-to-date encryption
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Only provisioning tokens and settings are stored on-device in protected storage; voice data is not retained locally beyond the request buffer.
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| Category Score
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Score: 1 / 3
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3. User Authentication
| Criterion
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Value
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Proof
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Comment
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| Account management
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Full
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Google Account provides full lifecycle: device sharing, household roles, activity controls and remote sign-out of linked devices.
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| Authentication
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Secure
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Google Account login supports phishing-resistant passkeys and enforced 2-Step Verification, which the device relies on exclusively.
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| Brute-force protection
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Exist
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Google Account login applies adaptive risk scoring, rate limiting and lockout challenges.
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| Event logging
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Access event logged
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My Activity and device activity pages log voice commands, device usage and account sign-ins with retention controls.
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| Passwords
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Require change after setup with complexity requirements
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Google Account enforces strong-password checks and encourages passkeys; there is no local default credential on the speaker.
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| Category Score
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Score: 1 / 3
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Technical Specifications
| Property
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Details
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| Operating System & App
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Cast firmware / Google Home platform (Companion App: Google Home app (Android/iOS))
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| Hardware (CPU / GPU)
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CPU: • GPU:
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| Memory & Storage
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Memory: • Storage: Onboard flash, no user-accessible local storage
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| Power, Battery & Charging
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Battery: • Power: 15 W DC adapter • Charging:
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| Display & Camera
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Display: • Camera:
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| Sound & Connectivity
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Sound: • Connectivity: 2.4/5 GHz Wi-Fi, Bluetooth 5.0
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| Physical (Dimensions & Mass)
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Dimensions: • Mass:
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Reasoning: The Nest Mini has almost no device-level attack surface that the user controls: no local storage, no exposed debug interface, automatic platform updates and an exclusive dependency on a Google Account with mature 2FA, risk-based login and activity logging. Its weaknesses are platform-level rather than device-level: the user cannot pin firmware, and account compromise (credential stuffing) is the realistic path in. Scope note: rated for a current device bound to an account with 2-Step Verification enabled; the same speaker on a weakly protected Google Account would score lower on every user-authentication criterion. The product is no longer sold and is assessed as end of sale.
