Vade Secure analyzed 26.2 million remote images in November 2020 while blocking 262 million emails containing malicious, remotely hosted images. (Sean Gallup/Getty Images)

A new report suggests that 2020 saw an increase in phishing emails that relied on remotely-hosted images to help malicious emails slip past filtering technology. But other experts downplayed the alarm, suggesting that the technique is well-known, and squashed through multilayered defenses should be able to catch. 

The blog post report from email security company Vade Secure, said that in November 2020 the team analyzed 26.2 million remote images while blocking 262 million emails containing malicious, remotely hosted images. The company said it was inspired to measure the volume of such attacks after observing what appears to be an uptick in this technique over the past year.

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