Email security systems miss thousands of malicious links

guest · Aug 28, 2018

Email security systems miss thousands of malicious links
August 28, 2018
https://betanews.com/2018/08/28/email-security-misses-malicious-links/

A new study from email security company Mimecast shows that malicious links in emails are being missed by many security systems.

Mimecast examined more than 142 million emails that had passed through organizations' email security vendors. The latest results reveal 203,000 malicious links within 10,072,682 emails were deemed safe by other security systems -- a ratio of one unstopped malicious link for every 50 emails inspected.

The report also finds an 80 percent increase impersonation attacks in comparison to last quarters' figures. Additionally, 19,086,877 pieces of spam, 13,176 emails containing dangerous file types, and 15,656 malware attachments were all missed by these incumbent security providers and delivered to users' inboxes.

The full report is available to download from the Mimecast website.
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Full report: https://www.mimecast.com/globalassets/documents/infographics/esra-infographic---august-2018.pdf

guest · Dec 18, 2018

New Report Finds Emails Containing Dangerous Attachments Up More Than 25 Percent
December 12, 2018
https://www.mimecast.com/resources/press-releases/dates/2018/12/esra-q3fy19/

This quarter’s assessment found that these email security systems are missing more than 25 percent of emails containing dangerous attachments in comparison to last quarter’s findings.

To date Mimecast has inspected more than 180 million emails that were deemed “safe” from these incumbent systems. Within these emails, the tests found 16,581 emails that contained dangerous file types.

“Cybercriminals are constantly adapting their email-based attacks, looking for new ways to bypass security solutions that rely too heavily on reputation-based detection or file signature matches. This quarter we saw a particularly large jump in emails containing dangerous file types.,” said Matthew Gardiner, cybersecurity strategist at Mimecast.
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Email Security Risk Assessment infographic - December 2018 (PDF): https://www.mimecast.com/globalassets/documents/infographics/esra-infographic.pdf

guest · Mar 5, 2019

Malicious URLs Used As Click Bait And Delivered Through Both Email And Web
March 5, 2019
https://www.mimecast.com/resources/press-releases/dates/2019/esra/

This quarter’s report found that email delivered with malicious URLs, a recently added part of the testing, has increased by more than 125 percent in comparison to last quarter’s results.

The data was analyzed and, as in past periods, Mimecast was found to deliver superior efficacy. New to the ESRA report, was testing for malicious URLs. Mimecast detected 463,546 malicious URLs contained in the 28,407,664 emails delivered were deemed “safe” by an organization’s existing email security system, averaging to one malicious URL in every 61 emails.

Impersonation fraud also continues to grow and present challenges. The new research from Mimecast and Vanson Bourne revealed that 41 percent of respondents reported seeing an increase in impersonation fraud from vendors or business partners asking for money, sensitive information or credentials – with 38 percent saying they’ve seen an increase of impersonation fraud from well-known internet brands.
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The Mimecast Email Security Risk Assessment Quarterly Report – March 2019 (PDF): https://www.mimecast.com/globalassets/documents/whitepapers/ESRA-White-Paper-March-2019-v3.pdf
Millions Of Missed Email Threats By Incumbent Security Systems - Infographic (PDF): https://www.mimecast.com/globalassets/documents/infographics/esra-infographic.pdf

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