VPN appliances have always been a security concern. Granting remote access to people outside the company is inherently risky, but over the past year those concerns have escalated. The COVID-19 pandemic has increased VPN usage dramatically as more employees access it and more systems are exposed to remote access. Attackers are aware of this and we are seeing an increase in attacks on VPNs.

These attacks can be divided into three scenarios that require different levels of security

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