@techreport{stein-tls-ech-considered-harmful-00, number = {draft-stein-tls-ech-considered-harmful-00}, type = {Internet-Draft}, institution = {Internet Engineering Task Force}, publisher = {Internet Engineering Task Force}, note = {Work in Progress}, url = {https://datatracker.ietf.org/doc/draft-stein-tls-ech-considered-harmful/00/}, author = {Yaakov (J) Stein}, title = {{ECH Considered Harmful}}, pagetotal = 7, year = 2025, month = jul, day = 1, abstract = {Encrypted Client Hello is designed to enhance personal privacy, in particular obstructing the ability of communications service providers (but not Over The Top service providers) to map packet flows to applications. While mostly ineffective in attaining this goal, it does severely hamper network-based detection of malicious flows, thus exposing end-users to various security risks that were previously avoidable.}, }