# USPS - 20-277-R21 - 4
> **Closed** recommendation · 2021-08-31
**Report:** U.S. Postal Service Protection Against External Cyberattacks ([detail](https://api.ai-analytics.org/ig-report/29731))
**OIG report number:** 20-277-R21
**Recommendation number:** 4
## Text
Some or all of the recommendation is not publicly available due to concerns with information protected under the Freedom of Information Act.
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*Source: oversight.gov · AI Analytics · CC0 1.0*