There had been concern that Britain's Computer Misuse Act, written in the days before the World Wide Web, allowed denial of service attacks to fall through a loophole. These are attacks in which a web or email server is deliberately flooded with information to the point of collapse.
The 1990 legislation described an offence of doing anything with criminal intent "which causes an unauthorised modification of the contents of any computer"; the question was whether that covered denial of service attacks. When a court cleared teenager David Lennon in November 2005 on charges of sending five million emails to his former employer â€“ because the judge decided that no offence had been committed under the Act â€“ the need for amendment seemed obvious.
Lennon's lawyer had successfully argued that the purpose of the company's server was to receive emails, and therefore the company had consented to the receipt of emails and their consequent modifications in data. District Judge Kenneth Grant concluded that sending emails is an authorised act and that Lennon had no case to answer, so no trial took place. That ruling was overturned and Lennon was sentenced to two months' curfew with an electronic tag. But by that time, amendments to the 1990 legislation were already included in the Police and Justice bill.
We'll now it's illegal that will stop all criminal activity as criminals won't want to break the law!!!!