An elite group of security technologists has concluded that the American and British governments cannot demand special access to encrypted communications without putting the world's most confidential data and critical infrastructure in danger. With security breaches and awareness of nation-state surveillance at a record high and data moving online at breakneck speeds, encryption has emerged as a major issue in the debate over privacy rights. Technology companies ... have been moving to encrypt more of their corporate and customer data after learning that the National Security Agency and its counterparts were siphoning off digital communications and hacking into corporate data centers. In Britain, Prime Minister David Cameron threatened to ban encrypted messages altogether. In the United States, Michael S. Rogers, the director of the N.S.A., proposed that technology companies be required to create a digital key to unlock encrypted data. The [technology group's] new paper is the first in-depth technical analysis of government proposals by leading cryptographers and security thinkers. In the report, the group said any effort to give the government "exceptional access" to encrypted communications ... would leave confidential data and critical infrastructure like banks and the power grid at risk. With government agency breaches now the norm, the security specialists said authorities could not be trusted to keep such keys safe from hackers and criminals.