All counselling sessions, our communications and the fact you are attending counselling are completely confidential, unless you give your consent to any particular information being disclosed.
The first exception is supervision, which I attend under my professional code of practice. However, discussing counselling processes and issues does not mean disclosing your identity, and my supervisor is also bound by a Code of Ethics including confidentiality.
The second exception to this principle is when, in my professional judgement, I believe there is clear and imminent danger to you or others. This would include circumstances where your competence to make a decision is impaired and is something, where possible, I would discuss with you first.
I also take notes. I am the only person who sees them and they are kept securely.