Can your ISP look at your internet traffic??

And if an ISP cannot legally look at your traffic, how can they ever be sure or the merits of even one accusation?

(Credit to pruby for alerting me to this section of the crimes act)

Crimes Act Part 9A Crimes against personal privacy

216B

Prohibition on use of interception devices

(1) Subject to subsections (2) to (5), every one is liable to imprisonment for a term not exceeding 2 years who intentionally intercepts any private communication by means of an interception device.

(2) Subsection (1) does not apply where the person intercepting the private communication—
(a) Is a party to that private communication; or
(b) Does so pursuant to, and in accordance with the terms of, any authority conferred on him or her by or under—
(i) Part 11A of this Act; or
(ii) [Repealed]
(iii) The New Zealand Security Intelligence Service Act 1969; or
(iiia) the Government Communications Security Bureau Act 2003; or
(iv) The Misuse of Drugs Amendment Act 1978; or
(v) The International Terrorism (Emergency Powers) Act 1987.

(3) Subsection (1) of this section does not apply to the interception by any member of the Police of a private communication by means of an interception device where—