简称：CMA 1990
英国首部针对计算机犯罪和网络安全的立法，经多次修订（2006年警察与司法法、2008年严重犯罪法、2015年严重犯罪法等）。定义三类主要犯罪：未经授权访问计算机资料、未经授权访问意图实施或协助进一步犯罪、未经授权妨碍计算机运行（含损害、删除、修改计算机数据）。适用于英国境内计算机和数据系统，对网络安全和数据完整性提供基础法律保护。
Computer Misuse Act 1990 is up to date with all changes known to be in force on or before 22 September 2026. There are changes that may be brought into force at a future date.
Revised legislation carried on this site may not be fully up to date. Changes and effects are recorded by our editorial team in lists which can be found in the ‘Changes to Legislation’ area. Where those effects have yet to be applied to the text of the legislation by the editorial team they are also listed alongside the affected provisions when you open the content using the Table of Contents below.
2.Unauthorised access with intent to commit or facilitate commission of further offences.
3.Unauthorised acts with intent to impair, or with recklessness as to impairing, operation of computer, etc.
3ZA.Unauthorised acts causing, or creating risk of, serious damage
3A.Making, supplying or obtaining articles for use in offence under section 1, 3 or 3ZA
