diff --git a/src/org/labkey/targetedms/TargetedMSController.java b/src/org/labkey/targetedms/TargetedMSController.java
index a376752e8..d2a4239f3 100644
--- a/src/org/labkey/targetedms/TargetedMSController.java
+++ b/src/org/labkey/targetedms/TargetedMSController.java
@@ -2217,6 +2217,7 @@ else if (MoleculeManager.getMolecule(getContainer(), gmChromInfo.getGeneralMolec
     }
 
 
+    @RequiresLogin // Require a login to protect public folders against aggressive bots hitting this page on very large documents
     @RequiresPermission(ReadPermission.class)
     public class PrecursorAllChromatogramsChartAction extends SimpleViewAction<ChromatogramForm>
     {
@@ -2351,6 +2352,7 @@ private void pageToSelectedChromatogram(ChromatogramForm form, ChromatogramsData
         // No match found so no need to redirect
     }
 
+    @RequiresLogin // Require a login to protect public folders against aggressive bots hitting this page on very large documents
     @RequiresPermission(ReadPermission.class)
     public class MoleculePrecursorAllChromatogramsChartAction extends SimpleViewAction<ChromatogramForm>
     {
@@ -4398,6 +4400,7 @@ public ModelAndView getHtmlView(final RunDetailsForm form, BindException errors)
         public abstract String getDataRegionNameSmallMolecule();
     }
 
+    @RequiresLogin // Require a login to protect public folders against aggressive bots hitting this page on very large documents
     @RequiresPermission(ReadPermission.class)
     public class ShowTransitionListAction extends ShowRunSplitDetailsAction<DocumentTransitionsView>
     {