A successful digital preservation strategy accounts for and lessens the impact of various threats to the digital materials over time. Typologies of threats are practical tools that can aid in the development of preservation strategies. This paper proposes the Simple Property-Oriented Threat (SPOT) Model for Risk Assessment. It defines six essential properties of successful digital preservation.
- Available for long-term use.
- Identity allows an object to be discovered and retrieved.
- Persistence means objects are intact and can be read from the storage media.
- Renderability is that the object can be used and retain the significant characteristics.
- Understandable by its intended users.
- Authenticity in that it is what it purports to be.
Digital preservation threats can be divided into two categories:
- threats to archived digital content, and
- threats to the custodial organization itself.