Tangem — Security Rating

Official Product Page (External)

Score Breakdown

Category	Assessment	Notes
Device Isolation	Strong	Hardware custody isolation characteristics.
Firmware Transparency	Strong	Open-source firmware posture and auditability considerations.
Key Management Architecture	Moderate	Seed handling structure and user key control model.
Backup Model	Moderate	Recovery exposure and user failure risk considerations.
Operational Complexity	Moderate	User configuration surface and misuse risk profile.
Supply Chain Considerations	Moderate	Manufacturing, distribution, and tamper-risk considerations.

Tangem Wallet Security Rating — LISR v1

Hero Section

Tangem Wallet
LISR Score: 68 / 100
Tier B — Structured Hardware Custody

Version: LISR v1
Last Reviewed: 2026-03

Summary Assessment

Tangem operates a card-based custody model where private keys are generated and stored within a secure element and accessed via NFC interaction with a mobile device.

This architecture prioritizes operational simplicity and portability, while introducing dependency on the mobile environment for transaction construction and user verification.

Under the LISR v1 framework, Tangem is classified as Tier B — Structured Hardware Custody, reflecting balanced tradeoffs between usability and verification isolation.

Risk Considerations

Operational security remains dependent on:

• Device Isolation — Strong
• Firmware Transparency — Moderate
• Key Management Architecture — Moderate
• Backup Model — Moderate
• Operational Complexity — Strong
• Supply Chain Considerations — Moderate

User misconfiguration remains the primary risk vector in most self-custody failures.

Appropriate For

Best suited for:

• Users prioritizing operational simplicity over device-based verification separation
• Mobile-first custody workflows with controlled device environments
• Holders implementing multi-card redundancy for recovery
• Custody setups with clearly defined operational procedures

Not Designed For

Less suitable for:

• Users requiring fully isolated signing environments with independent display verification
• Custody models dependent on air-gapped or screen-verified transaction confirmation
• Operators without defined backup-card handling procedures
• Environments with high mobile-device compromise risk

Methodology Note

Scored under the LISR v1 framework.

Weights are locked for a 12-month evaluation cycle.
Version-controlled.
No mid-cycle adjustments.

Affiliate Disclosure

Linkmerica may receive referral compensation from certain wallet providers.
Ratings are determined independently under the LISR framework.

FAQ

What does the Linkmerica Tangem rating represent?

A structured summary of custody risk characteristics across architecture, recovery exposure, governance, incident history, and lifecycle risk.

Does a higher score mean funds cannot be lost?

No. Loss can still occur due to phishing, compromised recovery material, user procedural failures, tampering, or software issues.

Does Linkmerica provide custody services or financial advice?

No. Linkmerica does not provide custody services and does not provide financial advice.

How often can the rating change?

Ratings may change as firmware, apps, vendor practices, disclosures, and incident information evolve. A review date is provided for context.

Are internal weights or scoring math disclosed?

No. The public methodology summary describes factors considered without disclosing internal weights or scoring math.