Fetching details from the dictionary...
outflow; effluence; efflux; spillage; spill; discharge; haemorrhage; hemorrhage; bleeding (e.g. of ink into paper)
outflow (of people, capital, etc.); drain (of gold, talent, etc. from a country); leak (e.g. of personal information)
石油が海に流出した。
Oil spilled into the sea.
個人情報の流出を防ぐためにセキュリティを強化した。
Security was strengthened to prevent the leakage of personal information.
工場からの汚水の流出が川の生態系に深刻な影響を与えた。
The discharge of wastewater from the factory had a serious impact on the river ecosystem.