> Source: [sk120676](https://support.checkpoint.com/results/sk/sk120676)

# sk120676 - Insecure SHA-1 certificate signature algorithm in use

| Property | Value |
|----------|-------|
| Solution ID | sk120676 |
| Date Created | 2017-09-27 |
| Last Modified | 2019-01-22 |
| Technical Level | Advanced |
| Products | Spark Firewall (Locally Managed) |
| Versions | R82.00.X, R81.10.X |

## Symptoms

- "`Insecure SHA-1 certificate signature algorithm in use`" error on PCI compliance scans against 600 / 700 / 1100 / 1200R / 1400 appliances failure.

## Solution

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