Why is 1Password a critical permission securtity risk according to 365 Defender?

@Gerard001 Thank you for writing to us. It's hard to say exactly what the reason is for 1Password being rated at such a high level of risk without knowing how 365 Defender is assessing those risks. It might have to do with the fact that 1Password requires permission to change data on websites when auto-filling. We have some great articles describing the permissions 1Password in the browser needs as well as info about the security of 1Password in the browser here: About 1Password browser permissions, About the security of 1Password in your browser I hope that info is helpful, let me know if you have any other questions!