HTX has upgraded its security architecture with multiple withdrawal addresses that distribute hot-wallet assets and rotate automatically, Justin Sun, an adviser, owner and HTX Global Advisor, said in an Aug. 20, 2026 post on X. HTX said old addresses would be disabled when new ones activate, aiming to keep user assets 100% SAFU and extreme-incident losses below $1 million under an insurance fund; those assurances have not been independently verified. The change follows reports of about 166 small unsolicited USDT outflows from an HTX-labeled hot wallet, including 15 transfers of 7.5 USDT to Kraken deposit addresses, in an episode described as address poisoning. HTX denied that official platforms or testing programs initiated the deposits after reviewing internal records and found no supporting evidence, while uncertainty over wallet ownership and labeling has continued. Address-poisoning reports remained persistent days after the Aug. 18, 2026 incident. Kraken reportedly froze up to $4.2 million linked to the disputed flows, a figure Kraken has not confirmed, and a Kraken user group has been formed to unite affected users, gather data on frozen funds and press the exchange for resolution while distinguishing voluntary user safeguarding from any official Huobi-led activity. The episode coincides with U.K. sanctions on Huobi Global S.A. and related EU transaction restrictions set for Aug. 23, 2026, with Binance and Bitget also limiting HTX-related flows.