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A new spambot called Onliner has been discovered which can bypass spam filters and target 711 million email addresses, as noted by ZDNet.

Onliner is used to send the banking malware Ursnif to vulnerable Windows computers.

The discovery was made when a security researcher known as Benkow uncovered an open web directory on a web server used by Onliner.

Onliner has the required details for about 80 million accounts which are then used to spam the remaining 630 million email addresses.

Onliner takes advantage of credentials harvested from other security breaches, including the LinkedIn hack from 2012, phishing campaigns, and other sources.