The post discusses a security audit of Mullvad VPN conducted by X41 DSEC, highlighting various vulnerabilities found and criticisms of the transparency of public audit reports. It mentions significant findings like heap corruption vulnerabilities and notes that the audit lacked a clear threat model section. User comments indicate mixed opinions about Mullvad's recent changes, such as removing features like port forwarding and switching away from OpenVPN, leading some users to consider switching to other VPN providers. The general sentiment reflects dissatisfaction with user treatment and transparency in the VPN industry.