Security improvements sprint in DrupalCamp Ruhr 2018

Links:
drupal core with security filter: https://www.drupal.org/project/issues/search/drupal?text=&assigned=&submitted=&project_issue_followers=&status%5B%5D=13&status%5B%5D=8&version%5B%5D=8.x&issue_tags_op=%3D&issue_tags=security
drupal core with Security improvements filter: https://www.drupal.org/project/issues/search/drupal?text=&assigned=&submitted=&project_issue_followers=&issue_tags_op=%3D&issue_tags=Security+improvements
Full project applications: https://www.drupal.org/project/issues/projectapplications
Prioritized list of full project applications: https://www.drupal.org/project/issues/search/projectapplications?status[]=8&status[]=14&issue_tags=PAReview%3A+review+bonus
Security documentations: https://www.drupal.org/docs/develop/security

Categories:
- newbies with no coding knowledge:
(type should be to review security related pages and propose improvements on them from non-coding pov)
- newbies with small contribution experiences:
(type should be reviews on submitted security improvements)
- newbies in security field but with contrib experiences:
(type should cover creation of tests on d7/8 cores from security improvements)
- hardcore contributors
(type should cover new security improvement issues, improve their test coverage or implement it from scratch)