From Longman Dictionary of Contemporary Englishcrack into something phrasal verbto secretly enter someone else’s computer system, especially in order to damage the system or steal the information stored on it → hack A teenager was accused of cracking into the company’s network. → crack→ See Verb table
Examples from the Corpus
crack into • Terence's face went from being startled by his attack to astonishment, then might have cracked into a smile.• She looked through the crack into the hallway.• Fog had slipped through a crack into the ivory tower.• Lightning bolts about a hundred miles away are sending out cracks into the sky of awesome proportion.• When he stepped forward to use the other hand, something cracked into the small of his back, and he stumbled.• All of the eggs were cracked into their bowls. 