raider

noun

1. 1. a sudden, hostile attack, esp. by troops, military aircraft, etc., or by armed, usually mounted, bandits intent on looting
   2. any act or instance of entering to remove or capture something: a midnight raid on a refrigerator
2. any sudden invasion of a place, as by police, for discovering and dealing with violations of the law
3. ☆ an attempt, as by a business concern, to lure employees from a competitor
4. a deliberate attempt by one or more speculators to cause a quick, unexpected fall in stock market prices

transitive verb, intransitive verb