Hardware Wallet Cards Vulnerable to Laser-Based Password Bypass With No Fix Available

The Breaking Security Flaw

Researchers have uncovered a serious vulnerability in Tangem's hardware wallet cards—physical devices designed to safely store cryptocurrency. The problem: attackers can use a laser to manipulate the card's internal components and reset user passwords without permission. Unlike software problems that companies can patch through updates, this flaw exists at the physical hardware level, meaning Tangem has no way to fix existing cards already in customers' hands.

Think of it like discovering that every lock of a particular brand has a secret weakness that allows thieves to reset the combination. Once those locks are installed on homes, there's nothing the manufacturer can do to improve them remotely.

How the Attack Works

Tangem cards store sensitive information on a microchip protected by software security measures. By using precise laser technology, attackers can interfere with the chip's memory or electrical pathways, essentially forcing it to "forget" its security settings. Once the password is reset, an attacker could potentially gain access to the cryptocurrency stored on the card.

This requires specialized equipment and technical knowledge, so it's not something an average criminal could do in a few minutes. However, it demonstrates that the card's protection relies on a single point of failure.

What This Means

The discovery raises fundamental questions about how secure these physical devices actually are. For users who believed they were storing their cryptocurrency in an unbreakable safe, this news is alarming. The problem isn't just the vulnerability itself—it's that the manufacturer cannot issue a patch, firmware update, or improvement to fix it.

Key concern: Every Tangem card manufactured with this vulnerable design remains vulnerable forever, regardless of when it was made or how carefully you protect it.

This differs from typical software security flaws, where companies release updates to address problems. With hardware vulnerabilities at this level, affected devices become permanently at risk.

Why You Should Care

If you use Tangem cards to store cryptocurrency or other sensitive digital assets, this discovery directly impacts your security. Your card's safety no longer depends only on how well you protect it physically—it also depends on whether someone with laser equipment and technical knowledge targets it.

For people considering purchasing such devices, this raises the question: how thoroughly has the manufacturer tested for these kinds of attacks? Other hardware wallet manufacturers may face similar vulnerabilities that haven't been discovered yet.

What You Can Do

• Review your holdings: If you own Tangem cards, consider whether the risk is acceptable for your situation. Small amounts might be fine; large amounts might warrant alternative storage methods.
• Diversify storage: Don't keep all your cryptocurrency on one device or one brand. Spread assets across multiple security solutions.
• Stay informed: Follow security news from trusted sources. If researchers discover attacks on your wallet type, you'll want to know quickly.
• Consider alternatives: Research other hardware wallet brands and evaluate their security independently.
• Ask manufacturers questions: If you're shopping for a hardware wallet, ask companies specifically about laser vulnerability testing and physical security measures.

Looking Forward

This incident highlights an uncomfortable truth about hardware security: even devices marketed as "unhackable" can have serious flaws that remain invisible until researchers specifically look for them. The cryptocurrency industry will likely face more of these discoveries as security researchers examine physical devices more thoroughly.

The most important lesson: no single security solution is perfect, which is why experts recommend never trusting one device alone with your most valuable digital assets.