Reforming the UK’s Computer Misuse Act

Reforming the UK’s Computer Misuse Act

The UK Home Office recently ran a Call for Information to investigate the Computer Misuse Act 1990 (CMA). The CMA is the UK’s anti-hacking law, and as Rapid7 is active in the UK and highly engaged in public policy efforts to advance security, we provided feedback on the issues we see with the legislation.

We have some concerns with the CMA in its current form, as well as recommendations for how to address them. Additionally, because Rapid7 has addressed similar issues relating to U.S. laws — particularly as relates to the U.S. equivalent of the CMA, the Computer Fraud and Abuse Act (CFAA) — for each section below, we’ve included a short comparison with U.S. law for those who are interested.

Restrictions on security testing tools and proof-of-concept code

One of the most concerning issues with the CMA is that it imperils dual-use open-source security testing tools and the sharing of proof-of-concept code.

Section 3A(2) of the CMA states:

(2) A person is guilty of an offence if he supplies or offers to supply any article believing that it is likely to be used to commit, or to assist in the commission of, an offence under section 1, 3 or 3ZA.

Security professionals rely on open source and other widely available security testing tools that let them emu ..

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