Final answer:
Secure long-term storage of information typically uses specialized formats such as PDF/A, TIFF, MKV, or MXF that offer stability and meet digital preservation standards.
Step-by-step explanation:
Information that needs to be stored securely for 10 years or more would most likely be stored in a long-term digital preservation format. This involves strategies and structured activities that ensure access to digital data for as long as necessary. To maintain the integrity and confidentiality of the data over time, formats such as PDF/A for documents, TIFF for images, and MKV or MXF for videos are often used. These formats are known for their stability and widespread recognition as standards for long-term digital preservation.