Protecting a web site from malicious users (needs more details)
Demonstrated by: 

A person Skilled in web site security should be able to do the following:

A security Expert should additionally be able to do the following:

Roles and Tasks that require this skill

Security Team member (Contributor role)
Help to oversee software security for the Drupal project
Duration: ongoing

Roles and Tasks that may use this skill

Discover Drupal mentor (Contributor role)
Share your experience and expertise with an underrepresented student in the Discover Drupal program
Duration: ongoing
Drupal Core Leadership Team (Contributor role)
Perform final review and governance on community-suggested improvements to Drupal core
Duration: ongoing
DrupalCamp speaker (Contributor role)
Make a presentation at a DrupalCamp or DrupalCon event
Duration: 1 hour
Manually test a proposed fix for an issue (Contributor task)
Manually test a patch or merge request that has been proposed as the fix for an issue
Duration: 20 minutes
Provide support via text chat (Contributor task)
Answer questions, provide suggestions and resources to another user through text chat.
Duration: 20 minutes
Provide support via text forums (Contributor task)
Answer questions on Drupal Support forums or Drupal Answers (Stack Exchange).
Duration: 20 minutes
Software tester (Contributor role)
Manually test Drupal core or contributed modules, themes, or distributions
Duration: ongoing