What do I need to know about application security in Solr?
Application security is the general practice of adding features or functionality to software to prevent a range of different threats. These include denial of service attacks and other cyber attacks, and data breaches or data theft situations. Lucidworks Fusion built on top of Solr strengthening various aspects, indexing, querying and adding new effective features like in-built ML / AI based recommenders etc.
The aspect Fusion really empowers Solr is security. Please checkout the following links to know more:
Apache Solr, itself, though not very user-friendly, has security frameworks for supporting authentication and authorization of users. Solr includes some plugins out of the box, and additional plugins can be developed using the authentication and authorization frameworks listed on: Authentication and Authorization Plugins.
There are couple of very well written articles by Noble Paul and Kevin Cowan on Lucidworks blog site for Securing Solr: