アメリカ政府組織であるCISAはVPN使うなと言っているけどな Do not use a personal virtual private network (VPN). Personal VPNs simply shift residual risks from your internet service provider (ISP) to the VPN provider, often increasing the attack surface. Many free and commercial VPN providers have questionable security and privacy policies. However, if your organization requires a VPN client to access its data, that is a different use case.