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Software bug let numerous hackers steal over $100 million in Bitcoin from thousands of wallets

Over $100 million in Bitcoin has been taken from thousands of compromised crypto wallets, a crypto research firm found. A software bug is the mechanism behind the losses. The firm identified numerous hackers as responsible.

By Yuki Tanaka·Aug 5, 2026·1 min read·crypto·$BTC

Key takeaways

  • Over $100 million in Bitcoin was stolen from thousands of compromised crypto wallets, according to a crypto research firm.
  • A single software bug was the mechanism behind the thefts.
  • The research firm attributed the thefts to numerous hackers, indicating exposure across more than one criminal operation rather than a single targeted breach.
  • The source names neither the specific software involved nor any patch.
  • No timeline for the thefts and no per-wallet loss figure were disclosed.

Over $100 million in Bitcoin has been taken from thousands of compromised crypto wallets, a crypto research firm found. A software bug is the mechanism behind the losses. The firm identified numerous hackers as responsible.

The scope of the bug

Thousands of wallets, one bug. The crypto research firm's findings put the stolen total above $100 million in $BTC (reported). The source names neither the specific software nor any patch.

"Numerous" is the word the source uses to describe the hackers. One bug, multiple actors: the research firm's finding points to exposure that extended across more than one criminal operation, not a single targeted breach.

What the disclosure does not include

The research firm is unnamed in available source material. No timeline for when the thefts occurred is given. No per-wallet loss figure is disclosed. The two hard data points in the public record: stolen total, over $100 million in $BTC (reported); compromised wallets, thousands (reported).

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Source: forbes.com
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Frequently asked

How much Bitcoin was stolen and from how many wallets?

Over $100 million in Bitcoin (reported) was taken from thousands of compromised wallets (reported).

What caused the thefts?

A single software bug was the mechanism behind the losses, exploited across thousands of wallets.

Who was responsible for the attacks?

A crypto research firm attributed the thefts to numerous hackers, pointing to more than one criminal operation rather than a single targeted breach.

Which software was affected and was it patched?

The source names neither the specific software involved nor any patch.

When did the thefts occur?

No timeline for when the thefts occurred is given in the available source material.