1. Vulnerability Description

• Using self-signed certificates can be vulnerable to security because there is no certification authority(CA) to validate them.

2. How to check vulnerability

• Connect to the site using the certificate and check the certificate’s issuance target, issuer, expiration date, etc.
• When using a self-signed certificate, the web browser will output a warning message as shown below.

3. Vulnerability Countermeasure

• Use a certificate issued by an authorized authority using In-house SL Certificate Purchase Application Guide.