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Can a web Application Firewall Scan Email for Malware?

by stacy


Email is a popular way for attackers to spread malware to users, as it’s a vulnerable target for cybercriminals. But what can you do to protect yourself from email-borne malware? A web application firewall can scan email for malicious content and threats, and can also block suspicious domains and IP addresses from accessing your emails. In this article, we’ll explain how a web application firewall can help protect you from email-borne malware.

Email Scanning with Web Application Firewall

Web application firewall (WAF) scanning of email for malware is a valuable capability for organizations that manage email and potentially sensitive information. WAF scanning can detect malicious attachments, URLs, or embedded content in emails, as well as malware signatures. In addition to detecting malware, WAF scanning can also identify potentially risky email interactions such as opening attached files or clicking on links in emails.

WAF scanning can be automated using a number of different tools, including Nessus and the open source Burp Suite. Although these tools are broadly effective, they may not be specific enough to detect some types of malware. For example, Nessus does not include scan capabilities for malicious Java applets or ActiveX controls. In addition, Nessus and Burp Suite can take some time to scan an entire email archive. Therefore, it may be beneficial to combine WAF scanning with other detection methods, such as manual inspection of emails by security analysts.

Although there are a number of benefits to using WAF scanning for email protection, there are also some limitations to consider. First, some types of malware may not be detected by WAF scans. For example, worms or viruses that use polymorphic code to evade detection by traditional antivirus software

Malware Detection in Emails

The web application firewall (WAF) can be used to scan email for malware. This is an effective way of detecting malicious emails and protecting your organisation from cyber-attacks.

Email scanning with a WAF can be done using a rule-based scanner or a signature-based scanner. Rule-based scanning is the simplest method and uses a set of predetermined rules to identify malicious content. Signature-based scanning is more sophisticated and uses a set of signatures to identify malicious content.

Both rule-based and signature-based scanning are effective at detecting malware in emails. However, they have different strengths and weaknesses. Rule-based scanning is simpler to use and can be more rapid, but it may not detect all types of malware. Signature-based scanning is more accurate but may require more time to detect all types of malware.


Email is the lifeblood of business-critical applications. However, as email becomes increasingly targeted by malicious actors seeking to deliver malware, it’s important to have a web application firewall (WAF) in place that can scan email for threats. By scanning email content and looking for common signs of malware such as executables or suspicious file associations, a WAF can help protect your organization from devastating attacks.

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