Chief Security Officer, an executive responsible for an organization's security strategy. Also can refer to Combined Sewer Overflow in environmental contexts.
Modern corporate acronym following the pattern of C-suite executive titles (CEO, CFO, etc.). The security officer meaning developed as cybersecurity became critical to business operations in the late 20th century.
The rise of CSOs reflects our digital anxiety age - companies now need executives dedicated entirely to protecting against threats that didn't exist a generation ago, creating entirely new categories of corporate leadership focused on fear and prevention.
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