BlockchainReporter explores cybersecurity in the blockchain space, covering threats, best practices, securing digital assets and decentralized networks.
Tag: CyberSecurity
Polymarket Halts Trading After Third-Party Provider Breach Drains User Wallets
Polymarket froze trading and entered cancel-only mode on October 29 after a compromised third-party provider allowed an attacker to drain roughly $2.65 million.
October 29, 2026
Coinbase Data Breach: Exchange Says Its Systems Were Not Compromised After Amplitude Vendor Leak
Coinbase denied a breach of its own systems after analytics vendor Amplitude exposed contact data for a small subset of customers on Oct. 28.
October 29, 2026
Bithumb Confirms Data Breach as Cyberattacks Sweep South Korea’s Financial Sector
South Korea's second-largest crypto exchange confirmed a data breach in its internal groupware, leaving customer funds untouched as investigators assess a wider attack wave.
October 28, 2026
Keystone Hardware Wallet Discloses Website Breach Exposing Customer Shipping Data
Keystone said a third party obtained customer shipping and order records after the hardware wallet maker detected unauthorized website access on October 20.
October 25, 2026
Are NIST Elliptic Curves Backdoored? Claude Solves the 25-Year Seed Mystery
Anthropic says Claude found that NIST's curve seeds came from a 1990s random number generator seeded with Unix timestamps, not a hidden backdoor.
October 17, 2026
Coinbase, Custodian of About 5% of BTC, Outlines Bitcoin’s Post-Quantum Priorities
The exchange holding about 5% of all bitcoin wants the quantum-safe migration to start now and treats dormant and lost coins as a separate, unsolved problem.
October 14, 2026