This one is worth your time to read (and possibly take some action).
Quote:
Systems Affected
Network Infrastructure Devices
Overview
The advancing capabilities of organized hacker groups and cyber adversaries create an increasing global threat to information systems. The rising threat levels place more demands on security personnel and network administrators to protect information systems. Protecting the network infrastructure is critical to preserve the confidentiality, integrity, and availability of communication and services across an enterprise.
To address threats to network infrastructure devices, this Alert provides information on recent vectors of attack that advanced persistent threat (APT) actors are targeting, along with prevention and mitigation recommendations.
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See
https://www.us-cert.gov/ncas/alerts/TA16-250A for the details, description, recommendations and references.
Hope this helps some.
