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| Samsung Galaxy Watch9 (SM-L350, 44mm)
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Security Grade
Calculator v
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Samsung Galaxy Watch9 (44mm)
Category: Smartwatch • Model / Gen: 9th generation SM-L350 (BT 44mm), SM-L355 (LTE 44mm), SM-L340 (BT 40mm)
Release Date: 2026-07-22 • 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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Rare
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🔗 Proof
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Knox Vault on wearable, Verified Boot; smaller attack surface than flagship phones.
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| Known vulnerabilities
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Rare
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🔗 Proof
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Wear OS has far fewer CVEs than full Android; monthly Wear OS security bulletins.
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| Prior attacks
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Rare
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🔗 Proof
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Smartwatches are not a primary spyware target.
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| Updatability
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Very common
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🔗 Proof
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Galaxy Watch series receives 4–5 years of OS + security updates.
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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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Partial
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🔗 Proof
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Relies on paired phone's account; standalone watch offers PIN unlock only.
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| Communications
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Encrypted with up-to-date encryption
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🔗 Proof
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Bluetooth 6.0 LE Secure, WPA3 Wi-Fi, TLS 1.3 cloud sync.
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| Storage
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Encrypted with up-to-date encryption
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🔗 Proof
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AES-256 encryption with Knox Vault keystore.
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| Category Score
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Score: 2 / 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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Basic
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🔗 Proof
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Account management delegated to paired phone.
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| Authentication
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Basic
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🔗 Proof
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PIN unlock + re-pairing; no biometric on watch.
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| Brute-force protection
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Basic
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🔗 Proof
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PIN attempt limits; FRP tied to Samsung account.
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| Event logging
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Partial logging
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🔗 Proof
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Basic logs synced to paired phone.
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| Passwords
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Require change after setup
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🔗 Proof
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Setup requires watch PIN; no default complexity.
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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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Wear OS 5 (One UI Watch 7) (Companion App: Galaxy Wearable, Samsung Health)
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| Hardware (CPU / GPU)
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CPU: Penta-core 2.1GHz + 1.95GHz • GPU: Integrated
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| Memory & Storage
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Memory: 2 GB RAM • Storage: 32 GB
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| Power, Battery & Charging
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Battery: 445 mAh (typical) • Power: Wireless charging • Charging: Wireless (WPC)
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| Display & Camera
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Display: 1.5" Super AMOLED, 480×480 • Camera: None
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| Sound & Connectivity
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Sound: Speaker, microphone • Connectivity: Bluetooth 6.0, Wi-Fi, NFC, GPS, (LTE optional)
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| Physical (Dimensions & Mass)
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Dimensions: 46.0 × 43.7 × 8.6 mm • Mass: ~33 g (without strap)
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Samsung Galaxy Watch9 (44mm) is a 2026 standard smartwatch running Wear OS 5 with One UI Watch 7. It features Knox Vault security and Verified Boot on the wearable platform, but like the Watch Ultra2, its authentication model is dependent on the paired Android phone — the watch itself offers only PIN unlock without standalone biometrics. Communications use Bluetooth 6.0 LE Secure Connections and WPA3. Health data is AES-256 encrypted at rest. Smaller battery (445 mAh) than the Ultra2 but same security architecture. Receives 4–5 years of OS + security updates. Wear OS smartwatches have a limited attack surface and are not primary spyware targets.
