Block is an organization tracked by ThreatCluster, appearing in 1 threat cluster built from 1 intelligence report mention.
Block is a organization tracked across 1 threat cluster and 1 intelligence report mention on ThreatCluster. First observed August 2, 2026; most recent activity August 2, 2026.
A significant firmware vulnerability in Coldcard hardware wallets allowed attackers to exploit weak seed generation, resulting in the theft of approximately 1,367 BTC (around $70 million) from nearly 1,200 wallets. The…
Block is an organization tracked by ThreatCluster, appearing in 1 threat cluster built from 1 intelligence report mention.
The most recent intelligence report mentioning Block on ThreatCluster is dated August 2, 2026.
Across ThreatCluster reporting, Block most frequently co-occurs with Data Breach, Coinkite.
The most significant recent cluster is “Coldcard Firmware Flaw Leads to $70M Bitcoin Theft” (18 articles · Updated August 2, 2026). Block appears across 1 threat cluster in total, listed above with sources.
Block appears in 1 intelligence report mention across 1 deduplicated threat cluster, aggregated from 17,000+ monitored sources.