The phrase "high level of confidentiality" means that information is being kept private and secure, with limited access to only those who need to know. Full definition
Able to balance the needs of management, provide excellent customer service, and maintain high level of confidentiality and schedules with ease. (jeffthecareercoach.com)
Deadline meeting project coordinator with high level of confidentiality. (members.climber.com)
This is especially true for executives that run companies requiring high levels of confidentiality and integrity for the business that is being conducted. (thebalance.com)