Table of Contents - X.1457 (12/2025) - Security threats and requirements for information recommendation services

1	Scope
2	References
3	Definitions
	3.1	Terms defined elsewhere
	3.2	Terms defined in this Recommendation
4	Abbreviations and acronyms
5	Conventions
6	Introduction
	6.1	Overview of information recommendation services
	6.2	Key phases of information recommendation services
7	Security threats to information recommendation service
	7.1	Security threats to data collection and processing
	7.2	Security threats to feature engineering
	7.3	Security threats to recall
	7.4	Security threats to ranking
	7.5	Security threats to re-ranking
8	Security requirements of information recommendation services
	8.1	Security requirements of data collection and processing
	8.2	Security requirements of feature engineering
	8.3	Security requirements of recall
	8.4	Security requirements of ranking
	8.5	Security requirements of re-ranking
	8.6	Mapping between security threats and security requirements for information recommendation services
Appendix I – Use case: Educational information recommendation service
Appendix II – Use case: News recommendation service
Bibliography