# Critical Infrastructures: What Makes an Infrastructure Critical?
> **Long Report (Legacy)** · 2003-01-29 · `RL31556`
## Report
- **CRS ID:** RL31556
- **Series:** Long Report (Legacy)
- **Publication date:** 2003-01-29
## Documents
- [PDF](https://www.everycrsreport.com/files/20030129_RL31556_67588a8a628f4817e6aab8af85b598e4beadd410.pdf)
- [HTML](https://www.everycrsreport.com/files/20030129_RL31556_67588a8a628f4817e6aab8af85b598e4beadd410.html)
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