The training and skills medium
In cyber security, physical isolation, also known as network isolation or air gap, is a protection technique that involves physically disconnecting a system or network from the rest of the infrastructure connected to the Internet or other unsecured networks.
This means that isolated data and systems cannot be directly compromised by attacks from the Internet or other unsecured sources.
A security alert is a structured, prioritised mechanism designed to report in real time an active threat, a critical vulnerability or an incident in progress that compromises the security of a system, network, organisation or critical infrastructure. Issued by automated systems (e.g. SIEM, IDS/IPS) or certified authorities (ANSSI, CISA, CERT-FR, etc.), it aims to trigger a rapid, coordinated response to mitigate risks and protect digital assets.
ANSSI (Agence Nationale de la Sécurité des Systèmes d'Information) is the French national authority for cyber security.