What is backscatter and how is it used for email spamming?

by | Mar 20, 2020 | Anti-Spam, CCNP, CompTIA, Email Security, Exclusive Articles, Featured

Backscatter Spam

What is backscatter?

Attackers often forge the from and reply-to address of an email to send spam messages. When a receiving server receives such email spam with a forged sender address and later realizes that it cannot deliver the email message, it sends a bounce message. But, as the sender address in the received email was forged one, the bounce message reaches the forged return email address of the spam message. Backscatter or outscatter or collateral spam are autogenerated bounce messages that are sent to an email address that never sent the emails.

How does backscatter work? What are the risks of backscattering and how can we prevent it? In this article, we would discuss that in detail.

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Amrita Mitra

Author

Ms. Amrita Mitra is an author, who has authored the books “Cryptography And Public Key Infrastructure“, “Web Application Vulnerabilities And Prevention“, “A Guide To Cyber Security” and “Phishing: Detection, Analysis And Prevention“. She is also the founder of Asigosec Technologies, the company that owns The Security Buddy.

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