All Blog Items

Chat Files Shared –
Trust Nobody. No Exceptions.

Your marketing team uses one of the popular chat applications or collaboration platforms to share files daily: campaign assets, creative briefs, and competitor analysis. An external chat participant shared an SVG image file that was unknowingly downloaded from an infected website.

Use Case

Attack Scenario

Your marketing team uses one of the popular chat applications or collaboration platforms to share files daily: campaign assets, creative briefs, and competitor analysis.

An external chat participant shared an SVG image file that was unknowingly downloaded from an infected website.

The Attack Scenario

Unbeknownst to the external chat participant, the downloaded SVG image file is infected by one or more known vulnerabilities that can be included inside a legitimate SVG image file:

Embedded JavaScript (XSS)  ·  Event Handlers in SVG Elements  ·  External Resource Loading  ·  Malicious CSS  ·  "Billion Laughs" Attack

In this use case, the seemingly innocuous SVG image file could contain one or more modern cyberattacks, providing attackers with a backdoor into the chat participants' networks, potentially leading to widespread ransomware or data exfiltration days or weeks later.

The file looked like a harmless image. The sender didn't know it was infected. The threat was invisible to the naked eye and to most security tools.

How Do Conventional Cyber Defenses Intervene?

Mostly, attacks such as this pass freely through the conventional cyber defenses:

Firewalls  ·  Antivirus  ·  Antimalware  ·  Secure Email Gateways / Mail Relays  ·  Web proxies  ·  Secure browsers  ·  EDR / XDR  ·  WAF  ·  Sandboxes

How Does Yazam CDR Technology Intervene?

Yazam CDR filter processes files arriving via the popular chat and messaging applications:

WhatsApp  ·  Telegram  ·  Facebook Messenger  ·  WeChat  ·  QQ  ·  Line  ·  Slack  ·  Microsoft Teams  ·  Google Chat  ·  Signal

The Yazam CDR Engine identified the non-conforming, potentially malicious elements deeply embedded within the SVG file, checked if they were malicious, removed them completely if needed, and then reconstructed a clean, functional SVG file.

When using the Yazam CDR technology, the chat participant receives the legitimate file and is informed about the sophisticated attacks that were just neutralized.

"This isn't a hypothetical scenario — it represents the daily reality of advanced cyber threats. Yazam provides the critical, proactive layer that ensures your organization isn't just reacting to attacks, but effectively preventing them."

Want To Really Secure File Sharing in Chats?

Contact YazamTech today and discover how CDR technology proactively neutralizes chat-borne threats before they ever reach your team.

Contact YazamTech