Nest Protect (2nd Gen)

Nest Protect (2nd Gen)
Security Grade B Calculator v1	Nest Protect (2nd Gen) Brand: Google Nest (Parent: Google) Category: Smart Smoke Alarm • Model / Gen: Release Date: 2015-01-01 • Status: In sale Classification Date: 2026-10-27 • Official Website

Security Evaluation

1. Device Security

Criterion	Value	Proof	Comment
Known hardware tampering	Rare	—	Sealed wall-mounted device.
Known vulnerabilities	None	—
Prior attacks	Rare	—	No widespread attack campaigns.
Updatability	Very common	🔗 Proof	Firmware updates pushed via Nest app.
Category Score	Score: 2 / 3

2. System Security

Criterion	Value	Proof	Comment
Authentication with other systems	Partial	🔗 Proof	Requires Google account for app control.
Communications	Encrypted with up-to-date encryption	—	Uses TLS for cloud communication.
Storage	Encrypted with up-to-date encryption	—	Minimal local storage; sensor data managed in cloud.
Category Score	Score: 2 / 3

3. User Authentication

Criterion	Value	Proof	Comment
Account management	Basic	—	Managed through Google account.
Authentication	Secure	—	Google account supports 2FA.
Brute-force protection	Exist	—	Google account rate limiting and 2FA.
Event logging	Partial logging	—	Hush and alarm events logged in app.
Passwords	Require change after setup	—	Google account password requirements.
Category Score	Score: 2 / 3

Technical Specifications

Property	Details
Operating System & App	(Companion App: )
Hardware (CPU / GPU)	CPU: • GPU:
Memory & Storage	Memory: • Storage:
Power, Battery & Charging	Battery: • Power: • Charging:
Display & Camera	Display: • Camera:
Sound & Connectivity	Sound: • Connectivity:
Physical (Dimensions & Mass)	Dimensions: • Mass:

The Nest Protect (2nd Gen) is a smart smoke and carbon monoxide alarm. It detects smoke and CO levels and sends notifications to the user's phone. While it benefits from Google's security infrastructure, it is a safety-critical device in the home. Standard security management is recommended.