WISP: Women in Security & Privacy has many Berkeley alumna and provides meaningful mentoring opportunities and interesting programming
The Mozilla Foundation has a major commitment to privacy and security of its users, and sponsors a mailing list of privacy events.
The Bay Area chapter of the Open Web Application Security Project (OWASP) organizes meetups.
SF Legal Hackers is a global movement of lawyers, policymakers, technologists, and academics who explore and develop creative solutions to some of the most pressing issues at the intersection of law and technology.