--- a/fdbbackup/FileDecoder.actor.cpp	2024-11-15 12:10:29.888975838 +0000
+++ b/fdbbackup/FileDecoder.actor.cpp	2024-11-15 12:09:42.619162451 +0000
@@ -634,7 +634,7 @@
 				}
 			}

-			self->lfd = open(self->file.fileName.c_str(), O_WRONLY | O_CREAT | O_TRUNC);
+			self->lfd = open(self->file.fileName.c_str(), O_WRONLY | O_CREAT | O_TRUNC, 0600);
 			if (self->lfd == -1) {
 				TraceEvent(SevError, "OpenLocalFileFailed").detail("File", self->file.fileName);
 				throw platform_error();