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Malicious hackers exploit Cisco zero-day for highest access level at communications service provider

·Source: CyberScoop

Updated:

Executive Summary

Mandiant detailed the incident in a blog post Wednesday, but it’s unclear who was behind it or if they managed to get broad visibility into the victim’s internal traffic. The post Malicious hackers exploit Cisco zero-day for highest access level at communications service provider appeared first on CyberScoop .

Analysis

Mandiant detailed the incident in a blog post Wednesday, but it’s unclear who was behind it or if they managed to get broad visibility into the victim’s internal traffic. The post Malicious hackers exploit Cisco zero-day for highest access level at communications service provider appeared first on CyberScoop .
Source Attribution

Originally published by CyberScoop on Jun 24, 2026.

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