Practical security is all about risk management. And the first step is understanding what your risks are - not assuming or pretending they don't exist. Dependin

Practical security is all about risk management. And the first step is understanding what your risks are - not assuming or pretending they don't exist. Depending on the nature of the secrets your friend wants to share and who they are trying to hide from, advising them to avoid phones altogether might not be a bad idea. And falsely assuring them something is secure when that can't be confirmed could cause somebody a world of hurt.