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Blocking Image Based Email

My clients have been receiving a lot of email spam that have only images in them. No text.

How does one stop these types of email spam from getting though Email Security?

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3 Replies
cascadia
Level 12

Re: Blocking Image Based Email

Hi Tom,

We have been seeing image-based spam attacks increasing in the last several months in fast-changing snowshoe spam campaigns. The best and most effective option is to get the examples of spam messages that you're seeing forwarded with the original headers to saas_spam@mcafeesubmissions.com or use the Spam Control for Outlook plugin to report these to Message Security for evaluation.

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Re: Blocking Image Based Email

My client use the SpamControl plugin for all received spam messages. Isn't stopping the images from coming in.

I just sent 4 image based spam samples in to saas_spam email address.

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frankm
Level 10

Re: Blocking Image Based Email

These are very hard to stop, as many of the botnet/phishing domains used have published legitimate SPF/DKIM, imbed the graphic and word-salad the content. One of the first campaigns we saw come in, where from a Pan American netblock.