A Computer Game is a process/system and hackers/security researchers can find bugs in that system and they can make the Game work in a way that the creators/developers didn't intend to.

Same goes with Websites. Only the most famous websites are secure but most other websites can be hacked using XSS, SQL Injection or any other Top 10 OWASP vulnerability.

My question is women are a kind of process/system as well. Not electronic but biological. Why can't they be hacked?

If it can't be hacked, Does it mean female mind is a 100% secure system? But no system is fully secure. Every system have some weakness.