OWASPASVS 5.0 requirement

ASVS-V12.3.1 An encrypted protocol such as tls is used for all inbound and outbound connections to and from the application, including monitoring…

L2 Published 2025 Official page ↗
Standard
OWASP ASVS 5.0
Chapter
V12 Secure Communication
Section
V12.3 General Service to Service Communication Security
Level
L2 (requirement applies from this verification level up)

Requirement

Verify that an encrypted protocol such as TLS is used for all inbound and outbound connections to and from the application, including monitoring systems, management tools, remote access and SSH, middleware, databases, mainframes, partner systems, or external APIs. The server must not fall back to insecure or unencrypted protocols.