Ignoring hundreds of spam mails every month is one thing but dealing with malware and ransomware attacks that could cost your company millions in damages is an entirely different ballgame.

According to Symantec’s latest Internet Security Threat Report, 55 percent of emails received by employees in 2018 were categorized as spam and 1 in 412 emails was considered malicious, i.e. potentially harmful.

This chart, based on Symantec’s findings, shows which subjects, attachments and keywords are most often used in malicious mails and should be considered red flags to vigilant employees.

This article and chart originally appeared on the blog of statistics firm Statista, and is republished here with permission.