| Roku Streaming Stick 4K (3820R)
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Security Grade
Calculator v
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Roku Streaming Stick 4K (3820R)
Release Date: 2021-09-20 • 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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—
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Highly integrated USB stick form factor; difficult to physically modify without breaking.
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| Known vulnerabilities
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Very common
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🔗 Proof
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Roku OS has had notable privilege escalation and authentication bypass vulnerabilities in recent years.
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| Prior attacks
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Rare
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🔗 Proof
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No widespread botnet attacks; mostly targeted by individual researchers or local attackers.
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| Updatability
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Very common
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🔗 Proof
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Roku OS updates are pushed automatically and frequently without user intervention.
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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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Requires a Roku account tied to an email for activation and app installations.
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| Communications
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Encrypted with up-to-date encryption
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Uses TLS for streaming DRM content and API communication.
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| Storage
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Encrypted with up-to-date encryption
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Limited local storage; sensitive data like tokens are secured by the OS.
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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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Managed via Roku's central account system.
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| Authentication
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Secure
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Account login supports strong passwords.
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| Brute-force protection
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Exist
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Roku account login has rate limiting.
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| Event logging
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Partial logging
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App installation and purchase history are logged.
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| Passwords
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Require change after setup with complexity requirements
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Account creation enforces basic password 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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Roku OS (Companion App: Roku Mobile App)
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| Hardware (CPU / GPU)
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CPU: Quad-core • GPU:
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| Memory & Storage
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Memory: 1 GB • Storage: 512 MB
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| Power, Battery & Charging
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Battery: • Power: USB (TV or Adapter) • 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: Wi-Fi 802.11ac Dual-band, Bluetooth
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| Physical (Dimensions & Mass)
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Dimensions: 3.7 x 0.8 x 0.45 inches • Mass: 0.8 ounces
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The Roku Streaming Stick 4K is a widely used media streamer. While it benefits from frequent automatic OS updates and modern TLS encryption for content delivery, Roku OS has experienced several critical privilege escalation and authentication bypass vulnerabilities (e.g., CVE-2023-34315). As a device connected directly to the TV and home network, a compromise could lead to local network reconnaissance or unauthorized viewing. Therefore, it requires standard security management.
