Feed›Vulnerability›Coldcard warns of wallet seed flaw as stolen amounts reach $...
VulnerabilityCyber Insider
8.0 — CRITICAL

Coldcard warns of wallet seed flaw as stolen amounts reach $88.6 million

📅 2 August 2026 at 20:43 UTC📰 Cyber InsiderView original source ↗
Coldcard warns of wallet seed flaw as stolen amounts reach $88.6 million

Coldcard maker Coinkite has disclosed a security flaw affecting multiple generations of its Bitcoin hardware wallets that reduced the randomness used when generating wallet recovery seeds, potentially placing funds at risk. The company has released patched firmware for all affected devices and is urging users to stop creating new wallets until they update and migrate … The post Coldcard warns of wallet seed flaw as stolen amounts reach $88.6 million appeared first on CyberInsider.

🤖 AI BriefingAuto-generated threat analysis
🔍Threat Overview

A security flaw in multiple generations of Coldcard Bitcoin hardware wallets has been disclosed, potentially placing funds at risk due to reduced randomness used when generating wallet recovery seeds.

⚙️Technical Details
Affected Systems
Coldcard Mk2Coldcard Mk3Coldcard Mk4Coldcard Mk5Q devices
Attack Vectors
vulnerable firmware versions
💥Impact Assessment
Severity: high
Who Is at Risk
users who generated a seed on affected firmware versions
🛡️Recommended Actions
1verify whether device is running fixed firmware for its model
2generate new wallet only after updating and verifying the new backup and receiving address
3keep old backup until migration is fully confirmed
📦Affected Products
Coldcard Mk2Coldcard Mk3Coldcard Mk4Coldcard Mk5Q devices

Read the full article

This is a curated summary. The complete article is available at Cyber Insider.

Read on Cyber Insider ↗
← Back to feed