diff --git a/backend/src/main/resources/i18n/messages.properties b/backend/src/main/resources/i18n/messages.properties
index 6002afbcc..c0433d99a 100644
--- a/backend/src/main/resources/i18n/messages.properties
+++ b/backend/src/main/resources/i18n/messages.properties
@@ -658,7 +658,7 @@ tooltip.contact-email=Email address of the contact.
 tooltip.sign-assertion=Sign Assertion declares that the service provider wants the <saml:Assertion> element to be digitally signed.
 tooltip.dont-sign-response=Do not sign the full authentication response to the service provider. Enabling this property will reduce the size of the response to service providers who may have limitations to the size of the response.
 tooltip.turn-off-encryption=Whether to turn off encryption of the response.
-tooltip.usa-sha-algorithm=Whether to use the SHA1 Signing Algorithm.
+tooltip.usa-sha-algorithm=Whether to use the SHA1 Signing Algorithm. In cryptography, SHA-1 (Secure Hash Algorithm 1) is cryptographically broken but still widely used. It takes an input and produces a 160-bit (20-byte) hash value.
 tooltip.authentication-methods-to-use=The method used to authenticate the subject.
 tooltip.ignore-auth-method=Whether to ignore any SP-Requested Authentication Method.
 tooltip.omit-not-before-condition=Whether to include a NotBefore attribute in assertions.