The phrase "security reasons" refers to the measures or actions taken to ensure safety and protect something or someone from potential threats or harm. Full definition
Its closure to the public will end much of the access that climate scientists had to its data, leaving me to wonder if such information was becoming too sensitive for national security reasons. (geoengineeringwatch.org)
Those airlines that were not flying over there did so because of security reasons, right? (politics.stackexchange.com)
You can freeze your credit report for security reasons by putting a password before any business can check your credit report. (blog.agentinsure.com)