diff --git a/htdocs/core/lib/ticket.lib.php b/htdocs/core/lib/ticket.lib.php
index 6fbb8f22a09..ab2aeadf475 100644
--- a/htdocs/core/lib/ticket.lib.php
+++ b/htdocs/core/lib/ticket.lib.php
@@ -246,7 +246,7 @@ function llxHeaderTicket($title, $head = "", $disablejs = 0, $disablehead = 0, $
 		}
 		print '</div>';
 		if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-			print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+			print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 		}
 		print '</div>';
 	}
diff --git a/htdocs/opensurvey/fonctions.php b/htdocs/opensurvey/fonctions.php
index bcef6370d3b..208646c0a23 100644
--- a/htdocs/opensurvey/fonctions.php
+++ b/htdocs/opensurvey/fonctions.php
@@ -115,7 +115,7 @@ function llxHeaderSurvey($title, $head = "", $disablejs = 0, $disablehead = 0, $
 		print '>';
 		print '</div>';
 		if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-			print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+			print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 		}
 		print '</div>';
 	}
diff --git a/htdocs/public/members/new.php b/htdocs/public/members/new.php
index 923c57b4692..be40c94ad32 100644
--- a/htdocs/public/members/new.php
+++ b/htdocs/public/members/new.php
@@ -123,7 +123,7 @@ function llxHeaderVierge($title, $head = "", $disablejs = 0, $disablehead = 0, $
 		print '>';
 		print '</div>';
 		if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-			print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+			print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 		}
 		print '</div>';
 	}
diff --git a/htdocs/public/onlinesign/newonlinesign.php b/htdocs/public/onlinesign/newonlinesign.php
index 5350eccdcbd..0511d7ce2c3 100644
--- a/htdocs/public/onlinesign/newonlinesign.php
+++ b/htdocs/public/onlinesign/newonlinesign.php
@@ -185,7 +185,7 @@ if ($urllogo)
 	print '>';
 	print '</div>';
 	if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 	}
 	print '</div>';
 }
diff --git a/htdocs/public/payment/newpayment.php b/htdocs/public/payment/newpayment.php
index 89992d00ff9..11ad7b554e2 100644
--- a/htdocs/public/payment/newpayment.php
+++ b/htdocs/public/payment/newpayment.php
@@ -787,7 +787,7 @@ if ($urllogo)
 	print '>';
 	print '</div>';
 	if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 	}
 	print '</div>';
 }
diff --git a/htdocs/public/payment/paymentko.php b/htdocs/public/payment/paymentko.php
index 7a52098163d..444d70106b0 100644
--- a/htdocs/public/payment/paymentko.php
+++ b/htdocs/public/payment/paymentko.php
@@ -238,7 +238,7 @@ if ($urllogo)
 	print '>';
 	print '</div>';
 	if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 	}
 	print '</div>';
 }
diff --git a/htdocs/public/payment/paymentok.php b/htdocs/public/payment/paymentok.php
index 409da4cd346..099ce22b323 100644
--- a/htdocs/public/payment/paymentok.php
+++ b/htdocs/public/payment/paymentok.php
@@ -178,7 +178,7 @@ if ($urllogo)
 	print '>';
 	print '</div>';
 	if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 	}
 	print '</div>';
 }
diff --git a/htdocs/public/recruitment/view.php b/htdocs/public/recruitment/view.php
index 1d24e69dd6e..556394c0a77 100644
--- a/htdocs/public/recruitment/view.php
+++ b/htdocs/public/recruitment/view.php
@@ -211,7 +211,7 @@ if ($urllogo)
 	print '>';
 	print '</div>';
 	if (empty($conf->global->MAIN_HIDE_POWERED_BY)) {
-		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
+		print '<div class="poweredbypublicpayment opacitymedium right"><a href="https://www.dolibarr.org" target="dolibarr" rel="noopener">'.$langs->trans("PoweredBy").'<br><img src="'.DOL_URL_ROOT.'/theme/dolibarr_logo.svg" width="80px"></a></div>';
 	}
 	print '</div>';
 }