Google Nest Hub (2nd Generation)

Google Nest Hub (2nd Generation)
Security Grade B Calculator v	Google Nest Hub (2nd Generation) Brand: Google Nest (Parent: Google LLC (Alphabet Inc.)) Category: Smart display • Model / Gen: 2nd generation GC8T (Chalk SKU GA01316; Charcoal GA01890) Release Date: 2021-03-30 • Status: In sale Classification Date: • _hub Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	None	🔗 Proof	Bounded review found no public disclosure of physical tampering, chip-off or forensic-recovery research targeting the Nest Hub 2nd gen unit; a physical mic-off switch is provided by design.
Known vulnerabilities	Rare	🔗 Proof	Official Nest security bulletin (March 2024) lists Google Nest Hub v2 under Nest Displays with CVE-2023-48419 (elevation of privilege, High severity), addressed via OTA; further CVEs tracked in monthly bulletins.
Prior attacks	None	🔗 Proof	No confirmed real-world exploitation campaign against Nest Hub units was found in public sources; NVD/bulletin entries describe disclosed, patched flaws rather than observed attacks.
Updatability	None	🔗 Proof	Google commits to automatic security updates for at least five years from US store launch, delivered OTA without user action; monthly Nest security bulletin cadence demonstrates active channel.
Category Score	Score: 2 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	🔗 Proof	Device works within Google ecosystem with Chromecast built-in and Thread/Matter border capabilities, and Assistant third-party actions via Google cloud OAuth; no direct local federation with other systems.
Communications	Encrypted with up-to-date encryption	🔗 Proof	Google Nest services operate over TLS for app, cloud and device traffic; no public disclosure of deprecated protocol use on Nest Hub 2; Cast protocol remains supported alongside modern transport.
Storage	No encryption	🔗 Proof	Google states Nest data encrypted at rest on Google's servers, but publishes no specification for device-local flash encryption on Nest Hub 2; Fuchsia storage encryption support is not documented per device.
Category Score	Score: 2 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Basic	🔗 Proof	No local multi-account system on device; single Google account registration via Google Home app, optional Voice Match for user recognition; account controls reside in the Google account.
Authentication	Basic	🔗 Proof	No on-device login UI; pairing and control go through Google account credentials over TLS; Google offers two-step verification at account layer as recommended protection.
Brute-force protection	Basic	🔗 Proof	Device exposes no local authentication endpoint; rate limiting and account recovery controls exist at Google account layer rather than enforced on the Nest Hub unit itself.
Event logging	Partial logging	🔗 Proof	Google Home app and Nest privacy hub show limited device activity/history and voice activity controls, but no device-side security or access event log is locally available to users.
Passwords	Require change after setup	🔗 Proof	First setup requires provisioning a personal Google account credential; no default device password and no local password system exist on the unit.
Category Score	Score: 2 / 3

Technical Specifications

Property	Details
Operating System & App	Fuchsia (Google's Fuchsia OS; Nest Hub 2 ships Fuchsia-based) (Companion App: Google Home app (Android / iOS))
Hardware (CPU / GPU)	CPU: Quad-core 64-bit 1.9 GHz ARM CPU with high-performance ML hardware engine • GPU: Not applicable (GPU not publicly disclosed on the Google Store spec page)
Memory & Storage	Memory: Not applicable (RAM size not publicly disclosed) • Storage: Not applicable (storage size not publicly disclosed)
Power, Battery & Charging	Battery: Not applicable (mains-powered; no internal battery) • Power: 15 W power adaptor • Charging: Not applicable (no battery; powered via included 15 W adapter)
Display & Camera	Display: 7-inch touchscreen, 1024 x 600 resolution • Camera: Not applicable (no built-in camera; Soli radar used for sensing instead; field treated as not applicable per product specification)
Sound & Connectivity	Sound: Full-range speaker with 1.7 in (43.5 mm) driver; 3 far-field microphones with physical mic-off switch; Voice Match • Connectivity: Wi-Fi 5 (802.11b/g/n/ac, 2.4/5 GHz); Bluetooth 5.0; Thread (802.15.4); Chromecast built-in
Physical (Dimensions & Mass)	Dimensions: Height 120.4 mm x Width 177.4 mm x Depth 69.5 mm (power cable 1.5 m) • Mass: 558 g

Assessment based on the Google Store technical specification, Wikipedia Nest Hub history, and Google's published Nest security bulletins and update-support policy, not a physical-unit test. Device-local at-rest encryption could not be confirmed from public documentation, and account-layer controls follow Google's general account security guidance rather than device-specific requirements.