US spot Bitcoin ETF outflows rose to nearly $300 million on Wednesday, up from $95 million a day earlier, as five-session withdrawals reached $1.44 billion.

The move follows recent security incidents involving South Korean crypto exchanges, including GOPAX’s precautionary suspension of services and a $70,000 hot-wallet breach at Prabang.

In a July interview, Binance chief security officer Jimmy Su explained how fake coding assessments could compromise employee devices, a tactic later used in the exchange’s record-breaking hack.