ThreatDown Uncovers First Cyber Attack Abusing Deno JavaScript Runtime for Fileless ...

Bakersfield • March 10, 2026

ThreatDown, the corporate business unit of Malwarebytes, today published research documenting what researchers believe to be the first documented case ...

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This article is one source in a clustered incident — the cluster page carries the summary, timeline and every other outlet covering it.

First Cyber Attack Exploiting Deno Runtime for Fileless Malware Detected A new cyber attack has been identified that exploits the Deno JavaScript runtime to deliver fileless malware. This incident marks the first known use of Deno in such a malicious context, raising concerns among cybersecurity experts about the potential for widespread exploitation. Organizations utilizing Deno are urged to enhance their security measures to mitigate risks. 3 sources 52

ThreatDown Uncovers First Cyber Attack Abusing Deno JavaScript Runtime for Fileless ...

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Extracted Entities

Attack Types (1)

Tools (1)