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Users need to be aware as 91 percent of cyber attacks start with email.
Source: FireEye

Thirty-two percent of email traffic seen in the first half of this year was considered “clean” and actually ended up in an inbox, researchers found in a report.

The report also found 1 in every 101 emails had malicious intent, said researchers at FireEye who analyzed over half-a-billion emails from the first half of this year.

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When compared to the previous six-month period, the changes in both these numbers show the email landscape continues to see an increase in email-based threats.

Cyber Security

“From malware to malware-less attacks including impersonation attacks like CEO fraud, a single malicious email can cause significant brand damage and financial losses. By choosing an email security solution with features based on real-time knowledge gained from the frontlines, and by teaching users to always ensure they are communicating with who they think they are, organizations can better defend against attacks,” said Ken Bagnall, vice president of email security at FireEye.

With email security solutions focused on detecting malware, cyber criminals are now adapting their attacks, exposing organizations to malware-less assaults such as CEO fraud. In fact, the majority of attacks blocked (90 percent) during analysis were malware-less, with phishing attacks alone making up 81 percent of the blocked malware-less emails, almost doubling from January to June 2018.

Data also indicate phishing attacks will continue to rise, while impersonation attacks (which were at 19 percent) remain relatively proportional to the total number of attacks seen. With it only taking one email to potentially impact an entire organization, the protection of this data must be taken seriously.

While the overall number of attacks stayed fairly consistent each month during the evaluated six-month period, a few notable trends stuck out relative to when and how attackers struck:
• Relative to malware-based attacks, Mondays and Wednesdays were most common
• Malware-less attacks were most likely to occur on a Thursday including domain name spoofing and attacks using a spoofed friendly user name, with the exception of newly existing domains which peaked on Wednesdays instead
• Impersonation attacks were most likely to fall on a Friday

When it comes to the weekend, malware-less attacks continued to be more prevalent than malware-based attacks, with domain name spoofing attacks and newly existing domains being the most likely among them.

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