With New Zealanders increasingly online, chatting, texting and sending emails rather than calling on home phone lines, "it is critical that our legislation keeps pace with these changes and allows surveillance agencies the ability to help keep New Zealanders safe".
However, she said the law did not change the authority of agencies to intercept telecommunications, did not change existing privacy protections and only related to real-time interception.
Labour deputy leader Grant Robertson said the Government was attempting to persuade the public the legislation was "a small technical bill for which they should switch off, get up and go and make a cup of tea".
"Nothing could could be further from the truth.
"Members of the public need to see this bill in the context of its companion bill the GCSB legislation ... which widely expanded the powers of the GCSB.
"This legislation [the TICS bill] operationalises those fundamental changes to the way our intelligence agencies operate."