This is the 8611th most frequent Japanese word.
改竄
Falsification; tampering; alteration (often of documents or data).
改竄 is used here to refer to the act of falsifying data in a report by altering it deceitfully.
彼は報告書のデータを改竄しました。
He falsified the data in the report.
改竄 is depicted as an unethical action involving the manipulation of vital documents or records.
その会社は重要な文書を改竄したと非難されています。
The company is accused of falsifying important documents.
改竄 emphasizes how tampered information becomes untrustworthy or unreliable.