avast buroservicetonlinede security alert dear user spider detected 5 deadly trojans mailbox today left unchecked lead total email shutdown loss important data protect email data follow url scan email free httpscanavastcom note serve final notification threat source avast internet security security alert dear user spider detected 5 deadly trojans mailbox today left unchecked lead total email shutdown loss important data protect email data follow url scan email free httpscanavastcom note serve final notification threat source avast internet security wed 12 feb 2020 100728 0800 avast internet security alert