In the monitoring domain, event management can deal with the monitoring of behavioural changes for any type of entity. Normally, the event management requires a lot of human intervention to generate a set of rules which results in adding effort and cost. A method and system for managing a plurality of events using automated rule generation has been provided. The system automatically generates a set of rules by studying the trend of incoming events over a period of time by computing moving percentile, thereby removing the need of human intervention to define rules for alert generation. The reported alerts are more specific and accurate, since the trend of incoming data is used to define the rules for alert generation. Further the method also provides the provision for the resolving the generated alerts either manually or automatically.