| Sonos One SL
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Security Grade
Calculator v1
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Sonos One SL
Release Date: 2018-08-01 • Status: In sale
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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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None
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🔗 Proof
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Physical design discourages tampering, with no reported hardware vulnerabilities.
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| Known vulnerabilities
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Rare
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🔗 Proof
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Sonos regularly releases firmware updates to address security issues (e.g., CVE-2021-23608 fixed in 2021).
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| Prior attacks
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Rare
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🔗 Proof
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Isolated cases of vulnerabilities (e.g., 2021 remote code execution flaw) quickly mitigated.
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| Updatability
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Very common
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🔗 Proof
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Firmware updates automatically pushed over Wi-Fi to add features and security patches.
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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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🔗 Proof
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Integrates with major voice assistants and streaming services (e.g., Spotify, Apple Music).
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| Communications
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Encrypted with up-to-date encryption
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🔗 Proof
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Audio streams and data transfers encrypted between speakers and the cloud.
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| Storage
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Encrypted with up-to-date encryption
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🔗 Proof
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Device settings and preferences stored with encryption; no audio content stored.
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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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🔗 Proof
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Manage device grouping, audio settings, and service integrations via Sonos Account.
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| Authentication
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Secure
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🔗 Proof
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Log in with Sonos Account credentials; 2FA available for enhanc
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| Brute-force protection
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Exist
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🔗 Proof
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Prevents repeated login attempts to protect against brute-force attacks.
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| Event logging
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Partial logging
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🔗 Proof
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Logs app access, device pairing, and firmware update events in account history.
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| Passwords
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Require change after setup with complexity requirements
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🔗 Proof
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Must include letters, numbers, and symbols; users can update passwords via account settings.
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| Category Score
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Score: 2 / 3
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Technical Specifications
| Property
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Details
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| Operating System & App
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Sonos S2 OS (compatible with Sonos S2 app) (Companion App: Sonos App (iOS, Android, macOS, Windows))
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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:
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| Power, Battery & Charging
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Battery: • Power: • 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:
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| Physical (Dimensions & Mass)
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Dimensions: 6.9 x 4.7 x 4.7 inches (H×W×D) • Mass: 3.08 kg
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The Sonos One SL is deliberately designed without a built-in microphone — this is its defining privacy advantage compared to other smart speakers. Unlike Echo or Nest, it cannot listen, detect wake words, or record voice commands. It functions as a network audio renderer controlled via the Sonos app or AirPlay 2. Because there is no always-on audio capture, the primary surveillance risk of smart speakers is eliminated. While Sonos has received minor criticism for app analytics, the physical absence of a microphone significantly reduces risk. This is among the lowest-risk IoT devices a consumer can deploy. Overall risk is lo
