I think they're breaking in.
4 seconds sound clip from the TRON (1982) movie soundboard.
You can hear this line at 01:08:25 in the Blu-ray version of the movie.
Quote context
[...]
- Dedicate yourself to getting the disk into the heart of the MCP.
- This interface is located at its base.
- We will not be able to communicate again unless you succeed. Go!
- This is the key to a new order.
- This code disk means freedom.
- I think they're breaking in.
- Hurry! The Users are waiting.
[...]