A database housed in the Netherlands is found to contain hundreds of millions of hacked email addresses. French security researcher who goes by the nom de hack of benkow found the stash as s/he was researching Ursnif, a trojan that steals banking credentials from unsuspecting users. The data files also included passwords and user names. Taken all together, this represents a store of data that might easily be used to take control of email accounts and leverage them for massive phishing and malware efforts.”]