About: http://webisa.webdatacommons.org/34391880

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	They appear to be sent using an automated method such as a script, using a list of compromised email addresses and passwords via whitelisted mail servers that require authentication for sending email.
http://www.w3.org/ns/prov#wasQuotedFrom	darkreading.com