A carbon credit is a tradable unit that represents a verified climate contribution, usually equal to one metric ton of carbon dioxide equivalent removed, reduced, or avoided. Credits are issued, transferred, and retired in registries, so they function as both a market instrument and a digital record. Their value depends on provenance, eligibility, and whether the credit has already been claimed or canceled.
In cyber security, carbon credits matter because the records behind them must be accurate and tamper-resistant. Attackers or insiders could try to alter ownership, duplicate claims, delay retirement, or spoof supporting documents, creating fraud or invalid reporting rather than classic malware damage. Defenders reduce that risk with strong access control, audit logs, separation of duties, cryptographic signing, and reconciliation between registries, contracts, and internal reporting systems. Clean data is essential: if the record is wrong, the climate claim is wrong.