one-to-many messaging

[Roland Perry]

In article <47F33599.7080007@callnetuk.com>, PeteM <otcbn@callnetuk.com> 
writes
>>> It would be [unlawful] if they sent somebody a forged 404 in the 
>>>course of the  interception.
>>  Mindful of the fact that throwing away a communication (the outbound 
>>one  in this case) isn't interception, what law do you think is being 
>>broken?
>
>CMA 1990 s.3(1). "unauthorised modification of the contents of any 
>computer [with intent to] prevent or hinder access to any program or 
>data held in any computer or to impair the operation of any such 
>program or the reliability of any such data." Deliberately placing an 
>untruthful 404 on the client computer certainly falls under this section.

A "404" being defined as modifying the contents of my computer seems to 
fall within the same sort of are as downloading an image being construed 
as "making" it, and opens a huge can of worms. In what way is the 404's 
arrival "unauthorised" (rather than "unexpected" or "frustrating" etc).
-- 
Roland Perry