MetaMask Added Protection Blocks Transaction Preview Deception
MetaMask’s Added Protection requires an EVM transaction to match its preview or revert, targeting contracts that behave differently after signing.
Wallets
Pocket Bitcoin Support-System Breach Exposed Data From Thousands of Customers
Pocket Bitcoin says exposed support data affected two customer groups, while private keys and customer bitcoin were not compromised in the incident.
Bitcoin Coin Selection: How UTXOs Affect Fees, Change and Privacy
Bitcoin wallets choose UTXOs for every payment. That hidden decision affects transaction size, change, future fees and what observers can infer.
Hot Wallet or Cold Storage? A Practical Crypto Security Guide
Hot wallets are convenient for transactions; cold wallets reduce online exposure. A split setup can limit how much one mistake puts at risk.
Failed USDT Transfer on TRON: Why TRX Was Charged and What to Check
A failed TRC-20 USDT transfer may still consume TRX. Use the transaction receipt to confirm the result, identify the error and avoid unsafe retries.
Zcash NU7 Vote Backs 25-Second Blocks and Existing Halvings
Zcash coinholders backed 25-second blocks, retained halvings, disabling v4 transactions at NU7 activation and a 2031 recycling date.