> san francisco, ca · verified oct 8, 2026
California
San Francisco has monthly or irregular meetings from ISC2, ISACA, CSA and ISSA chapters, a weekly Noisebridge hackerspace night, and the AI Security Engineers meetups, which run in person every week or two. The big events cluster in the fall and spring: AI Security Summit (October 15, 2026), [un]prompted II, OWASP Global AppSec USA and SANS in early November 2026, then BSidesSF in March and RSAC on April 5 to 8, 2027.
Sun, Oct 11, 2026 · 11:00 a.m. (the group's usual start time)
Berkeley, near Ashby BART (exact spot shared on request) · Metro area
Announced in a Bluesky post dated September 28, 2026 ("next meeting, Oct 11 in berkeley"). The post gives no time; 11:00 a.m. is the group's standing start time. Rain can push a meeting back a week.
ConfirmedMeetupFree
Tue, Oct 13, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Oct 13, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Thu, Oct 15, 2026 · 9:00 a.m. to 5:30 p.m.
The Westin St. Francis, 335 Powell St, San Francisco
A single-track, one-day flagship event run by Snyk and AI Engineer. Registration is open but the site shows no ticket price, so the paid access value is an assumption. Satellite editions are planned for Copenhagen and Sydney on November 25, 2026.
ConfirmedConferencePaidVendor-hosted
Tue, Oct 20, 2026 · 5:30 to 8:00 p.m. (networking from 5:30, talk from 6:15)
Hewlett Packard Enterprise, 6280 America Center Dr, San Jose · Metro area
Joint meeting with WiCyS Silicon Valley; free registration on Luma. A virtual option opens at 5:55 p.m.
ConfirmedChapter meetingFree
sv-issa.org/meetings/october-2026-ai-hunt-using… [S11] [S12]
Tue, Oct 20, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Oct 20, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Thu, Oct 22, 2026 · 5:00 to 7:00 p.m.
Cloudflare, 101 Townsend St, San Francisco
Hosted at Cloudflare's San Francisco office; free registration on Luma.
ConfirmedMeetupFree
Tue, Oct 27 to Thu, Oct 29, 2026
San Francisco (venue not published on the conference site)
The second edition of this AI security conference, after March 2026. In-person and online tickets are sold; a reception is listed for October 26, 2026.
ConfirmedConferencePaid
Tue, Oct 27, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Oct 27, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Thu, Oct 29, 2026
San Francisco Bay Area (location given to registrants) · Metro area
Listed on the chapter page on October 8, 2026 as an in-person meeting on October 29, 2026; the page gives no time or address, and registration runs through MyIAPP, which could not be read. KnowledgeNet chapters are an IAPP member benefit.
ConfirmedChapter meetingMembers only
Mon, Nov 2 to Fri, Nov 6, 2026 · Training November 2 to 4; conference November 5 to 6
San Francisco (host hotel: Hyatt Regency San Francisco, Embarcadero Center)
The OWASP Foundation's main US conference.
ConfirmedConferencePaid
Mon, Nov 2 to Sat, Nov 7, 2026
Hilton San Francisco Financial District, 750 Kearny St, San Francisco
Hotel group rate ends: Fri, Oct 16, 2026
Paid multi-day SANS courses, in person and online.
ConfirmedTrainingPaidVendor-hosted
Tue, Nov 3, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Nov 3, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Nov 6, 2026 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco
Per published schedule; confirm with organizer.
MeetingFree
Fri, Nov 6, 2026 · 6:00 p.m.
Outside the Dr. Martin Luther King Jr. Library, downtown San Jose · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Nov 6 to Sat, Nov 7, 2026 · Welcome reception 6:00 p.m. on November 6; conference 8:00 a.m. to 5:00 p.m. on November 7
Hyatt Regency Embarcadero, San Francisco
A small threat modeling conference (under 120 seats) held right after OWASP Global AppSec USA. Run by the Threat Modeling Connect community, whose site belongs to the vendor IriusRisk. Early-bird pricing runs through mid-October, with no exact date given.
ConfirmedConferencePaidVendor-hosted
Tue, Nov 10, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Nov 10, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Nov 13, 2026 · 8:00 a.m. to 5:00 p.m.
Las Positas College, Building 2400, Livermore · Metro area
Lower ticket prices end: Sat, Oct 31, 2026
Tickets before October 31, 2026 start at $45 for students and $100 for chapter members; prices rise after that date. Up to 13 CPEs with recorded sessions.
ConfirmedConferencePaid
Tue, Nov 17, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Nov 17, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Nov 24, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Nov 24, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 1, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 1, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Dec 4, 2026 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco
Per published schedule; confirm with organizer.
MeetingFree
Fri, Dec 4, 2026 · 6:00 p.m.
Outside the Dr. Martin Luther King Jr. Library, downtown San Jose · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 8, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 8, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 15, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 15, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 22, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 22, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 29, 2026 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Dec 29, 2026 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Jan 1, 2027 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco
Per published schedule; confirm with organizer.
MeetingFree
Fri, Jan 1, 2027 · 6:00 p.m.
Outside the Dr. Martin Luther King Jr. Library, downtown San Jose · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 5, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 5, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 12, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 12, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 19, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 19, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 26, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Jan 26, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 2, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 2, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Feb 5, 2027 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco
Per published schedule; confirm with organizer.
MeetingFree
Fri, Feb 5, 2027 · 6:00 p.m.
Outside the Dr. Martin Luther King Jr. Library, downtown San Jose · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 9, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 9, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 16, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 16, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 23, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Feb 23, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 2, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 2, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Mar 5, 2027 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco
Per published schedule; confirm with organizer.
MeetingFree
Fri, Mar 5, 2027 · 6:00 p.m.
Outside the Dr. Martin Luther King Jr. Library, downtown San Jose · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 9, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 9, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 16, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 16, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 23, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 23, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 30, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Mar 30, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Apr 2, 2027 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco
Per published schedule; confirm with organizer.
MeetingFree
Fri, Apr 2, 2027 · 6:00 p.m.
Outside the Dr. Martin Luther King Jr. Library, downtown San Jose · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Mon, Apr 5 to Thu, Apr 8, 2027
Moscone Center, 747 Howard St, San Francisco
The organizer's March 2026 press release and Moscone Center's event calendar both give April 5 to 8, 2027. The organizer's sites (rsaconference.com and onersac.com) refused automated access.
ConfirmedConferencePaidVendor-hosted
Tue, Apr 6, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Apr 6, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Apr 13, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Apr 13, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Apr 20, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Apr 20, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Tue, Apr 27, 2027 · 7:00 p.m.
272 Capp St, San Francisco (Mission District)
Per published schedule; confirm with organizer.
MeetingFree
Tue, Apr 27, 2027 · 7:30 p.m.
549 48th St, Oakland (side entrance on 48th St) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Announced without a date, or expected from past editions. Not confirmed.
Announced by the organizer; date not yet published.
East Bay (venue not yet announced) · Metro area
Date TBAMeetupFree
Announced by the organizer; date not yet published.
Livermore (2026 conferences at Las Positas College) · Metro area
Date TBAConferencePaid
Usually held over a weekend in March; 2027 dates not yet announced
San Francisco (2026 edition at City View at Metreon)
ExpectedConferencePaid
Held during RSAC week (March 23, 2026); 2027 date not yet announced
San Francisco (2026 edition at Public Works SF)
ExpectedConferencePaid
Held August 27 to 28 in 2026; 2027 dates not yet announced
Santa Clara (2026 edition at the Santa Clara Convention Center) · Metro area
ExpectedConferencePaid
San Francisco Bay Area (location given to registrants) and online · In the city
Periodic KnowledgeNet meetings on privacy, in person and virtual
Only IAPP members can join KnowledgeNet chapters. The chapter page as archived April 15, 2026 listed a virtual meeting on April 21, 2026 and a sold-out in-person meeting on May 6, 2026; no post confirms it took place, and the live page listed no meetings on October 2, 2026.
Members only
iapp.org/community/iapp-chapters/san-francisco-… [S16] [S30]
San Francisco · In the city
Spring and fall conferences plus occasional community events
The 2026 Spring Conference was held May 14, 2026 at KPMG's San Francisco office. The chapter's October 3, 2026 CommunITy Day at Ocean Beach is a volunteer beach day, not a security program, so it is not listed as an event.
Paid
Santa Clara and online · Metro area
Monthly webinars and in-person events, plus an annual two-day conference in late August
The 2026 Annual Conference was held August 27 to 28, 2026 at the Santa Clara Convention Center.
Paid
Online (Zoom); conferences at Las Positas College, Livermore · Metro area
Monthly member meetings on Zoom, usually a Thursday from 7:00 to 9:00 p.m.; in-person conferences in spring and fall
The ISC2 chapter for the East Bay. Monthly meetings are webinars with vendor and practitioner talks (registration required, 2 CPEs). The chapter's in-person conferences charge admission. The last activity date is its September 10, 2026 member meeting.
Free
San Francisco (Financial District) and online · In the city
Irregular happy hours, joint networking events and online talks, announced on the chapter's LinkedIn page
The chapter's official area is San Francisco, San Mateo and the North Bay; East Bay members are served by ISC2 East Bay. Its website calendar stops at July 2025, but its LinkedIn page announced a virtual talk on Thursday, September 10, 2026 and happy hours at Harlan Records in August and September.
Free
Santa Clara and San Jose host companies, hybrid · Metro area
Monthly chapter meetings from 6:00 to 8:00 p.m., usually on a Tuesday
The September 8, 2026 meeting was the latest posted; no October date was listed on October 2, 2026.
Free
San Francisco Bay Area; 2026 meeting held online · In the city
No regular schedule; one virtual meeting posted for 2026
The ISSA chapter listed for San Francisco. It held a virtual "revitalization" meeting for members and guests on April 8, 2026; nothing later was posted.
Free
San Jose and Santa Clara host companies, with a virtual option · Metro area
Monthly evening meetings, usually a Tuesday at 5:30 p.m., in person with a virtual option
The September 15, 2026 meeting was a panel on mental health in the security community. Registration is through Luma.
Free
Rotates among host companies (Pleasanton, San Francisco, San Mateo, Redwood City, Palo Alto and others) · Metro area
Monthly evening meetups from 5:00 p.m., on varying weekdays; host city changes each month
The September 30, 2026 meetup was in Pleasanton. No October date was posted on October 8, 2026.
Free
Marufuku Ramen, Pruneyard Shopping Center, Campbell · Metro area
Third Thursday of the month, 7:30 p.m.
The group moved after DEF CON 34 to Marufuku Ramen in Campbell, according to its July 23, 2026 forum post. The last activity date is the August 20, 2026 meeting it announced on the DEF CON forum on August 14; no post confirms it took place. Last-minute changes are posted on its Discord.
Free
Near Ashby BART, Berkeley (exact spot shared on request) · Metro area
Usually a Sunday at 11:00 a.m., on or around the Sunday next to the second Monday of the month; rain often delays a meeting by a week
Dates are posted on Bluesky; the website lagged behind (it still showed the July 2026 meeting in October). The group posted on June 7, 2026 that the meeting was being held that day. It announced July 12, 2026 as its last meeting before DEF CON, but no post confirms that meeting took place.
Free
San Francisco, Palo Alto and Sunnyvale (venues vary) · Metro area
Meetups, CTF days and an annual conference; no fixed schedule
A nonprofit hacker community. Its pre-DEF CON CTF and barbecue ran June 26, 2026 in San Francisco and June 27, 2026 at Endor Labs in Palo Alto. It also runs HackTheBay during RSAC week (March 23, 2026, Public Works SF) and the Pacific Hackers Conference (November 1, 2025, Sunnyvale).
Free
4 Embarcadero Center, ground level by the information kiosk, San Francisco · In the city
First Friday of the month, 6:00 p.m.
Part of 2600 Magazine's monthly meeting network. The last activity date is the first Friday of September 2026, when the magazine's September list named this meeting; no post confirms that a specific meeting took place. The group's own site, sf2600.com, did not respond on October 8, 2026.
Free
Outside the Dr. Martin Luther King Jr. Library, downtown San Jose · Metro area
First Friday of the month, 6:00 p.m.
Part of 2600 Magazine's monthly meeting network. The last activity date is the first Friday of September 2026, when the magazine's September list named this meeting; no post confirms that a specific meeting took place.
Free
San Francisco Bay Area (meeting places not published) · In the city
No published schedule; events are posted on Cyversity's member platform
Cyversity (formerly ICMCP) supports women, underrepresented communities and veterans in cybersecurity. Its event listings need a login. The last activity date is the July 31, 2025 joint speaker event with ISC2, ISACA and ISSA San Francisco on the ISC2 San Francisco calendar; an end-of-summer 2026 mixer with ISC2 San Francisco and ISACA San Francisco was promoted on LinkedIn without a date.
Quiet: last activity Jul 2025Members only
San Jose and San Francisco (host companies vary) · Metro area
Evening talks and networking about once a month; dates posted on Luma
Open to women, men and allies; the WiCyS affiliate covering San Francisco and Silicon Valley. The last activity date is the May 19, 2026 session it co-hosted with ISSA Silicon Valley. Its Luma calendar also lists a Cisco Santana Row event in November 2026 whose time is unclear, so it is not listed.
Free
San Francisco (host companies vary) · In the city
Occasional workshops and socials; no fixed schedule
The local arm of a national nonprofit. The last dated event found is a lock picking workshop with Lockpick Extreme at Cloudflare, 101 Townsend St, on March 20, 2026. The event page does not state a price or who may attend, so the access value is an assumption; check the organizer's site before going.
Quiet: last activity Mar 2026Free
San Francisco · In the city
Formerly occasional meetups
The last event on the group's Meetup page is a February 23, 2020 RSA week gathering. The chapter is not among the Women's Society of Cyberjutsu chapters currently listed; the nearest listed chapter is in Southern California.
Free
Sutardja Dai Hall 621, UC Berkeley · Metro area
General meetings Thursdays 7:00 to 8:00 p.m. during the semester, per the club site
UC Berkeley's student cybersecurity club and home of the 0ski CTF team; open to anyone at UC Berkeley. The last dated activity on its site is the Western Regional Collegiate Cyber Defense Competition season, which ended March 29, 2026; the club does not post dates for its weekly meetings, so the quiet status may understate activity during the fall semester.
Quiet: last activity Mar 2026Students only
City View at Metreon, 135 4th St, San Francisco · In the city
Annual two-day community conference in March, the weekend before RSAC
BSidesSF 2026 was held March 21 to 22, 2026. The status is quiet only because the conference runs once a year; 2027 dates were not announced on October 2, 2026.
Quiet: last activity Mar 2026Paid
San Francisco (host companies vary, including Snyk's AI Innovation Hub and the AWS AI Builder Loft) · In the city
In-person meetups and hackathons about securing AI systems, roughly every week or two; dates are posted on Meetup and Luma
A San Francisco chapter of the global AI Security Engineers community, sponsored by Snyk. Its Meetup page lists a September 29, 2026 hackathon at the AWS AI Builder Loft and an October 6, 2026 workshop, Hacking AI for Fun & Profit, at Snyk's AI Innovation Hub as past events. It has also partnered with ISC2 East Bay on a hands-on workshop.
Free
San Francisco (host companies vary) · In the city
Evening meetups roughly monthly, 5:00 or 5:30 to 8:00 p.m., usually a Wednesday
Meetings in 2026 ran January through July; the July 29, 2026 meeting at Workato, 600 Illinois St, was held jointly with ISC2 East Bay. No later date was found.
Free
Palo Alto and Sunnyvale (host companies vary) · Metro area
Evening technical talks every month or two at 6:00 p.m.
Talks cover application security, reverse engineering and offensive testing. The most recent was on April 2, 2026 at Straiker in Sunnyvale; no later date was posted on October 2, 2026.
Quiet: last activity Apr 2026Free
272 Capp St, San Francisco (Mission District) · In the city
Weekly members' meeting on Tuesdays at 7:00 p.m.; classes, hack nights and workshops on most other days are posted on its Meetup and Luma calendars
A volunteer-run hackerspace, not a security group: the calendar is mostly electronics, woodworking, game development and software infrastructure nights. It is listed because it is the home of DC415 and hosts occasional security talks. The last activity date is its Gamebridge game development meetup on Wednesday, October 7, 2026. The Tuesday 7:00 p.m. members' meeting time comes from the Meetup group description.
Free
549 48th St, Oakland (side entrance on 48th St) · Metro area
Hardware Hack Night and Fix-it Clinic on Tuesdays at 7:30 p.m.; other open nights (Women and Non-Binary Hack Night on Mondays, Radio Wednesdays, Software and Electronics Hack Night on Thursdays) are posted on the calendar
A volunteer-run hackerspace, not a security group: hack nights cover electronics, software, radio and repair, with occasional firmware and privacy talks. The last activity date is its Spaz Radio broadcast night on Wednesday, September 23, 2026. It is across the bay in Oakland; Noisebridge is the San Francisco equivalent.
Free
Numbered references for the listings on this page.