Update safe-links-about.md

ludek-vlk · web-flow · commit 6ca7e53fbcc3 · 2025-04-22T14:06:59.000+02:00
Adde behavior when SameSite=Strict cookies are required by the target page for authentication.
diff --git a/defender-office-365/safe-links-about.md b/defender-office-365/safe-links-about.md
@@ -165,6 +165,8 @@ You turn on or turn off Safe Links protection for Microsoft Teams in Safe Links
 > When you turn on or turn off Safe Links protection for Teams, it might take up to 24 hours for the change to take effect.
 >
 > Safe Links protection for Teams is supported in Teams desktop and web instances.
+>
+> Websites opened from Teams might require re-authentication when SameSite=Strict cookies are required by the target page for authentication. This occurs because the intermediary page that performs Safe Links validation executes a redirect to the target page, which is treated as a cross-site request. The same applies to links opened from Teams for Web (with Safe Links disabled).
 
 URLs in Teams are checked against a list of known malicious links when the protected user clicks the link (time-of-click protection). URLs aren't rewritten. If a link is found to be malicious, users have the following experiences:
 

Original file line number	Diff line number	Diff line change
`@@ -165,6 +165,8 @@ You turn on or turn off Safe Links protection for Microsoft Teams in Safe Links`
`165`	`165`	`> When you turn on or turn off Safe Links protection for Teams, it might take up to 24 hours for the change to take effect.`
`166`	`166`	`>`
`167`	`167`	`> Safe Links protection for Teams is supported in Teams desktop and web instances.`
	`168`	`+>`
	`169`	`+> Websites opened from Teams might require re-authentication when SameSite=Strict cookies are required by the target page for authentication. This occurs because the intermediary page that performs Safe Links validation executes a redirect to the target page, which is treated as a cross-site request. The same applies to links opened from Teams for Web (with Safe Links disabled).`
`168`	`170`
`169`	`171`	`URLs in Teams are checked against a list of known malicious links when the protected user clicks the link (time-of-click protection). URLs aren't rewritten. If a link is found to be malicious, users have the following experiences:`
`170`	`172`