attack (v.)
c.1600, from French attaquer (16c.), from Florentine Italian attaccare (battaglia) "join (battle)," thus the word is a doublet of attach, which was used 15c.-17c. also in the sense now reserved to attack. Related: Attacked; attacking.
attack (n.)
1660s, from attack (v.). Compare Middle English attach "a seizure or attack" (of fever), late 14c.