Mercado Bitcoin, Brazil's largest crypto exchange, detected an intrusion on the morning of Nov 2, 2026 and halted deposits and withdrawals as a precaution. Rickler Feed

The exchange put its own loss at $38M and pledged to cover all user losses, saying the incident was contained with no customer losses and no customer data leak. Independent estimate Hypernative put suspicious transfers at over $40M across at least 10 chains, later reports citing $40-46M and growing. BredoStrategy Rickler Feed

Reported scope was 106 BTC, 2,852 ETH, 10,700 SOL, 6.7M XLM and 77,000 AVAX, moved mainly 06:19-06:53 UTC Nov 2 across Bitcoin, Ethereum, Solana, Tron, Polygon, Arbitrum, Avalanche, BSC, Stellar and XDC. The attacker was later reported sweeping old deposit addresses, selling memecoins/altcoins, including moving $11.45M in alts, ending with 7,988 ETH (~$18.19M), plus a $1.1M VIRTUAL move and a halted $650K BTC bridge attempt. Capital News Rickler Feed Rickler Feed

Tether froze over 4.5M USDT tied to the incident, later reports put frozen funds at $5.55M then $9.27M across linked addresses including USDT, USDC and tokenized gold. Cause/attacker is not named in sources; classification is listed as unknown. Capital News Rickler Feed

Withdrawal status after Nov 2 suspension was still halted on day 3 per Nov 4 reports; no resumption notice appears in the sources checked. BitMart founder Sheldon Xia on Nov 3 said BitMart was also hit Nov 2 with small losses, possibly by the same group. BredoStrategy