Why blocking SVG files in e-mail traffic is so important – A look at the protection of our SecuMail® customers

In today’s digital world, email is an indispensable means of communication – both in the personal and business spheres. But with increasing use, so do the security risks. SVG files represent an often underestimated danger.

What are SVG files?

SVG stands for Scalable Vector Graphics – to German: scalable vector graphics. This is a type of image file based on vectors instead of pixels. This means that SVG images can be scaled as desired without any loss of quality. They are often used for logos, icons, charts, or other graphics on the web because they are very flexible and small in file size. This means that they are particularly easy to send…

Why are SVG files problematic in email traffic?

Although SVG files offer many benefits, they also pose security risks. Here are the top reasons why locking SVGs in email traffic is so important:

1. Exploitation for malware and phishing attacks:
   SVG files can contain malicious code, such as embedded JavaScript. Attackers use this opportunity to spread malware or launch phishing attacks through fake content.

2. Difficulties in detection:
   Because SVGs are text-based, they can be easily modified to hide malicious code. This makes it difficult for traditional security solutions to reliably detect malicious content.

3. Cross-Site Scripting (XSS):
   SVGs with embedded JavaScript can be exploited in certain contexts to perform cross-site scripting attacks, which significantly endangers user security.

So why did SecuMail® lock SVG files?

Locking SVG files in emails is a preventive security measure. We protect our customers by:

• Prevent the spread of malware
• Make phishing attacks more difficult
• To increase the security of our customers
• Comply with legal and compliance requirements

Want to learn more? Then we recommend the following technical article.

Result

Although SVG files are very popular on the web, they represent a potential security vulnerability in email traffic. Locking these files in our SecuMail® filter is an important measure to protect our customers from malicious code and to ensure the integrity of their communication channels.

If you would like to learn more about how you can improve your email security, then take a look around our website or talk to us directly at

+49(0) 8171 /24 69 20 !