Zero Day Attack

A skilled hacker, Jin Kang, falls into a broker's trap and fails his mission. Barely escaping with his life, he can't bring himself to face VX, a genius hacker and team member he greatly respects. Instead, Jin Kang chooses to go into hiding. By day, he works at a café, while at night, he quietly plots his revenge. However, his routine takes an unexpected twist when a mysterious and striking customer, Seo Yi-Yeon, enters the café and makes bold advances toward him. Baffled by Yi-Yeon's unexpected attention, Jin Kang now finds his plans for starting to go awry...

(Source: Tappytoon)

Note:
- Series is rated mature after season 1.
- Includes 10 extra chapters.