Multi Chain
Investigations tagged with this subject. A topic describes what a page is about — an attack type, a jurisdiction, a regulator, a named actor — as distinct from the source that produced it.
3 investigations on this topic
BtcTurk is Turkey's oldest and largest centralized cryptocurrency exchange, founded in 2013 in Istanbul. The exchange has suffered two major hot wallet breaches in 14 months — approximately $55 million stolen in June 2024 and approximately $48–$49 million in August 2025 — both attributed to private key compromise, establishing a pattern of repeated critical security failures. Despite operating under Turkish regulatory frameworks (CMB and MASAK) and maintaining cold wallet protections, the exchange's inability to prevent a second near-identical attack within a year raises serious concerns about the adequacy of its security controls.
avoid.net/m2→55/100[CAUTIONARY][MERGED] Consolidated into /m2-exchange on 2026-10-14. This page's content is preserved in its history.
avoid.net/coinex→66/100[CAUTIONARY]CoinEx is a centralized cryptocurrency exchange that suffered a major hot wallet breach on September 12, 2023, with losses estimated between $54 million and $70 million across multiple blockchains. On-chain investigators ZachXBT and Elliptic attributed the attack to the Lazarus Group (TraderTraitor), a North Korean state-sponsored threat actor, based on wallet address overlap with the contemporaneous Stake.com hack. Stolen proceeds were subsequently laundered in part through the Sinbad Bitcoin mixer, which was sanctioned by the U.S. Treasury's OFAC on November 29, 2023.