Coolpad K88

Security Grade

A-

Calculator v1

Coolpad K88

   Brand: Coolpad (Parent: Coolpad)

   Category: Smartphone • Model / Gen: 30th A3101, A3103, A3104, A3105, A2848, A3102, A3106

   Release Date: 2025-03-05 • Status:

   Classification Date: 2025-10-08 • Official Website

Security Evaluation

Criterion	Value	Proof	Comment
Known hardware tampering	None	🔗 Proof	As a legitimate brand device, widespread hardware backdoors are uncommon. However, risks in the low-end supply chain cannot be entirely ruled out.
Known vulnerabilities	Very common	🔗 Proof	Runs an old Android version with no ongoing security patches, leaving it exposed to numerous publicly known vulnerabilities.
Prior attacks	None	🔗 Proof	No widely reported targeted attacks, but the high vulnerability count makes it susceptible to generic malware.
Updatability	None	🔗 Proof	Official support for both OS upgrades and security patches has been discontinued.
Category Score	Score: 2 / 3

Criterion	Value	Proof	Comment
Authentication with other systems	Full	🔗 Proof	Supports basic screen lock methods (pattern, PIN, password). Unlikely to have a Trusted Execution Environment (TEE) for enhanced security.
Communications	Encrypted with up-to-date encryption	🔗 Proof	Relies on basic knowledge factors (PIN/pattern). Lacks more secure factors like a fingerprint sensor or facial recognition.
Storage	Encrypted with up-to-date encryption	🔗 Proof	Likely uses legacy Full-Disk Encryption (FDE) which is considered less secure than modern File-Based Encryption (FBE). The encryption strength may be outdated.
Category Score	Score: 1 / 3

Criterion	Value	Proof	Comment
Account management	Full	🔗 Proof	Supports basic screen lock methods (pattern, PIN, password). Unlikely to have a Trusted Execution Environment (TEE) for enhanced security.
Authentication	Absent	🔗 Proof	Relies on basic knowledge factors (PIN/pattern). Lacks more secure factors like a fingerprint sensor or facial recognition.
Brute-force protection	Absent	🔗 Proof	Includes fundamental protections like timed delays after repeated failed unlock attempts.
Event logging	Partial logging	🔗 Proof	The system has basic logging capabilities, but these are not accessible to users and unlikely to detail security-specific events.
Passwords	Require change after setup with complexity requirements	🔗 Proof	No evidence of forced password change or complexity requirements upon first use. Security relies heavily on user awareness.
Category Score	Score: 2 / 3

Property	Details
Operating System & App	Android (Companion App: https://www.coolpad.com/#/)
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: 146.6 mm x 70.6 mm x 8.25 mm • Mass: 187 g