Xiaomi Smart Band 8 (M2239B1)
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| Xiaomi Smart Band 8 (M2239B1) | ||
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Security Grade
Calculator v
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Xiaomi Smart Band 8
Brand: Xiaomi (Parent: Xiaomi Corporation) Category: Fitness Tracker • Model / Gen: 8 M2239B1 Release Date: 2023-04-18 • Status: End of sale Classification Date: • Official Website | |
Contents
Security Evaluation
1. Device Security
| Criterion | Value | Proof | Comment |
|---|---|---|---|
| Known hardware tampering | None | 🔗 Proof | Sealed low-cost device; no documented hardware tampering. |
| Known vulnerabilities | Rare | 🔗 Proof | Potential Bluetooth-level vulnerabilities exist; none widely reported for this model. |
| Prior attacks | None | 🔗 Proof | No publicly documented widespread targeted attacks. |
| Updatability | Very common | 🔗 Proof | Frequent firmware updates via Mi Fitness. |
| Category Score | Score: 2 / 3 | ||
2. System Security
| Criterion | Value | Proof | Comment |
|---|---|---|---|
| Authentication with other systems | Partial | 🔗 Proof | Can unlock paired smartphone, but not a full security key for third-party systems. |
| Communications | Encrypted with up-to-date encryption | 🔗 Proof | Bluetooth 5.1 LE with encryption; cloud sync over HTTPS. |
| Storage | No encryption | 🔗 Proof | No evidence of on-device encryption for limited temporary data. |
| Category Score | Score: 2 / 3 | ||
3. User Authentication
| Criterion | Value | Proof | Comment |
|---|---|---|---|
| Account management | Basic | 🔗 Proof | Mi Fitness account; limited multi-user management. |
| Authentication | Basic | 🔗 Proof | Device PIN can be set but disabled by default. |
| Brute-force protection | Basic | 🔗 Proof | Device PIN has limited attempt protection; account-level protection depends on Mi account. |
| Event logging | Partial logging | 🔗 Proof | Activity data synced to Mi Fitness; limited access logs. |
| Passwords | Default/Common/Easy to guess | 🔗 Proof | Device PIN disabled by default. |
| Category Score | Score: 3 / 3 | ||
Technical Specifications
| Property | Details |
|---|---|
| Operating System & App | Proprietary Xiaomi OS (Companion App: Mi Fitness) |
| Hardware (CPU / GPU) | CPU: Dialog DA14706 • GPU: N/A |
| Memory & Storage | Memory: Not publicly specified • Storage: Not publicly specified |
| Power, Battery & Charging | Battery: 190 mAh • Power: Lithium-ion polymer • Charging: Magnetic charging |
| Display & Camera | Display: 1.62" AMOLED Touch Display • Camera: None |
| Sound & Connectivity | Sound: Vibration motor only • Connectivity: Bluetooth 5.1 LE |
| Physical (Dimensions & Mass) | Dimensions: 48 x 22.5 x 10.99 mm • Mass: 27 g (with strap) |
