# Microsoft Defender stops Ransomware Attack in just 128 Seconds

_Thursday, August 6, 2026 at 8:00 AM EDT · Security · Latest · Tier 2 — Notable_

![Microsoft Defender stops Ransomware Attack in just 128 Seconds — Primary](https://www.cybersecurity-insiders.com/wp-content/uploads/Hacker-2-15.jpeg)

Microsoft announced its Defender security solution detected and stopped a ransomware attack on endpoint devices in 128 seconds. The company said the rapid response was demonstrated during a real-world incident involving QNET, an international marketing company with operations across multiple countries.

According to a published case study, cybercriminals attempted to compromise QNET systems by disguising malicious software as a legitimate Windows utility. The malware established remote access to deploy additional payloads designed to spread and encrypt critical files.

Microsoft Defender detected suspicious behavior almost immediately using artificial intelligence, behavioral analytics, and real-time threat intelligence. Within 128 seconds, the system isolated the threat and prevented the ransomware from encrypting business data.

Microsoft emphasized that Defender extends beyond traditional antivirus protection by continuously monitoring endpoints and using cloud-powered intelligence. The company highlighted the importance of integrating AI-driven detection with automated incident response to minimize operational disruption and financial losses.

## Sources

- [cybersecurity-insiders.com](https://www.cybersecurity-insiders.com/microsoft-defender-stops-ransomware-attack-in-just-128-seconds/)

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Canonical: https://techandbusiness.org/newswire/Z4tveQNsp8SffoL2W5oZVf
Retrieved: 2026-08-06T14:20:16.749Z
Publisher: Tech & Business (techandbusiness.org)