cracker
US /ˈkræk.ɚ/
UK /ˈkræk.ɚ/

1.
2.
3.
a person who breaks into computer systems, typically with malicious intent
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The company hired a cybersecurity expert to protect against crackers.
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A notorious cracker was arrested for breaching government systems.
4.
(derogatory) a poor white person, especially one living in the rural southern US
:
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The term 'cracker' is considered offensive when used to describe people.
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Historically, 'cracker' was used to refer to poor white laborers in the South.