Infrastructure security in AWS CloudShell
As a managed service, AWS CloudShell is protected by AWS global network security. For
      information about AWS security services and how AWS protects infrastructure, see AWS Cloud Security
You use AWS published API calls to access AWS CloudShell through the network. Clients must support the following:
- 
         Transport Layer Security (TLS). We require TLS 1.2 and recommend TLS 1.3. 
- 
         Cipher suites with perfect forward secrecy (PFS) such as DHE (Ephemeral Diffie-Hellman) or ECDHE (Elliptic Curve Ephemeral Diffie-Hellman). Most modern systems such as Java 7 and later support these modes. 
Note
By default, AWS CloudShell automatically install security patches for the system packages of your compute environments.