> fremont, ca · verified sep 26, 2026
California
Inside Fremont, security activity is limited to Ohlone College's NSA-designated cyber defense program and occasional security talks from the Fremont ACM chapter. Most regular meetings are a short drive away in San Jose, Santa Clara, Pleasanton and Oakland: ISSA, ISC2 and WiCyS in Silicon Valley meet monthly, OWASP Bay Area moves around the region, and DEF CON groups meet in Campbell and Berkeley. San Francisco hosts the large conferences, including BSidesSF in March and OWASP Global AppSec USA in November 2026.
Tue, Sep 29, 2026
San Francisco Bay Area (location given to registrants) · Metro area
A joint in-person meeting of the San Francisco Bay Area and Silicon Valley chapters. It was listed as sold out on September 26, 2026; the time and place are not shown publicly.
ConfirmedChapter meetingMembers only
Wed, Sep 30, 2026 · 5:00 to 8:00 p.m.
6120 Stoneridge Mall Rd, Pleasanton · Metro area
Talks on AI-powered application logging with OCSF, AI security incidents, and application security with zero trust.
ConfirmedMeetupFree
Fri, Oct 2, 2026 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Fri, Oct 2, 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
Thu, Oct 8, 2026
Sheraton Grand Sacramento Hotel, Sacramento · Regional
Run by Government Technology (e.Republic) with state cybersecurity officials. Registration is free but open to public sector staff only; private companies attend as sponsors. The venue comes from the event's hotel information.
ConfirmedSummitFreeVendor-hosted
Thu, Oct 8, 2026 · 7:00 to 9:00 p.m.
Online · Metro area
A Zoom webinar with talks on AI email attacks and generative AI runtime security; registration required, 2 CPEs.
ConfirmedChapter meetingFree
Thu, Oct 8, 2026 · 8:00 a.m. to 8:00 p.m.
SPUR Urban Center, 654 Mission St, San Francisco · Metro area
Paid one-day conference; see the chapter page for the agenda and prices.
ConfirmedConferencePaid
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; free registration on Luma. A virtual option opens at 5:55 p.m.
ConfirmedChapter meetingFree
sv-issa.org/meetings/october-2026-ai-hunt-using… [S12] [S13]
Thu, Oct 22, 2026 · 5:00 to 7:00 p.m.
Cloudflare, 101 Townsend St, San Francisco · Metro area
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) · Metro area
A volunteer-run AI security conference, the second edition after March 2026. In-person and online tickets are sold; an unofficial opening reception is listed for October 26, 2026.
ConfirmedConferencePaid
Mon, Nov 2 to Fri, Nov 6, 2026 · Training November 2 to 4; conference November 5 to 6
Hyatt Regency San Francisco · Metro area
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 · Metro area
Paid multi-day SANS courses, in person and online.
ConfirmedTrainingPaidVendor-hosted
Fri, Nov 6, 2026 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco · Metro area
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 13, 2026 · 8:00 a.m. to 5:00 p.m.
Las Positas College, Building 2400, Livermore · Metro area
Early-bird pricing ends: Sat, Oct 31, 2026
Early-bird tickets are $100 for chapter members, $145 for non-members and $45 for full-time students; prices rise after October 31, 2026. Las Positas students and staff may attend free from 1:00 p.m.
ConfirmedConferencePaid
Fri, Dec 4, 2026 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco · Metro area
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
Fri, Jan 1, 2027 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco · Metro area
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
Fri, Feb 5, 2027 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco · Metro area
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
Fri, Mar 5, 2027 · 6:00 p.m.
4 Embarcadero Center, ground level by the information kiosk, San Francisco · Metro area
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
Announced without a date, or expected from past editions. Not confirmed.
Announced by the organizer; date not yet published.
Moscone Center, 747 Howard St, San Francisco · Metro area
Date TBAConferencePaidVendor-hosted
Usually held over a weekend in March; 2027 dates not yet announced
San Francisco (2026 edition at City View at Metreon) · Metro area
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 (location given to registrants) and online · Metro area
Periodic KnowledgeNet meetings, in person and virtual
Only IAPP members can join. The chapter page as archived April 15, 2026 listed a virtual meeting on April 21, 2026 and the joint in-person workshop on May 6, 2026.
Members only
iapp.org/community/iapp-chapters/san-francisco-… [S24] [S25]
Silicon Valley (location given to registrants) · Metro area
Periodic KnowledgeNet meetings on privacy and AI governance, often held jointly with the San Francisco Bay Area chapter
IAPP says only IAPP members can join KnowledgeNet chapters. The last activity date is the in-person "Lunch and CCPA Risk Assessment Workshop" on May 6, 2026, shown as sold out on the chapter page as archived April 15, 2026; no post confirms it took place.
Members only
San Francisco · Metro area
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 event, not a security program.
Paid
Santa Clara, Pleasanton and online · Metro area
Monthly webinars and in-person events, plus an annual two-day conference in late August
The 2026 Annual Conference ("Trusted Autonomy: Governing the Agentic Future") was held August 27 to 28, 2026 at the Santa Clara Convention Center. The chapter's event list loads only in a browser; check it for monthly events.
Paid
East Bay; monthly meetings on 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 a few times a year
The ISC2 chapter closest to Fremont. Monthly member meetings are online webinars (registration required, 2 CPEs); the in-person events are the chapter's conferences, which charge admission.
Free
San Francisco (Financial District) · Metro area
Irregular networking hours and joint speaker events; nothing posted for 2026
The chapter's public calendar lists a joint speaker event and happy hour with ISACA, ISSA and Cyversity at Sens Restaurant, 4 Embarcadero Center, on July 31, 2025 as its most recent event. Earlier networking hours were held at Harlan Records.
Quiet: last activity Jul 2025Free
Santa Clara (host company varies), with a Zoom option · Metro area
Monthly chapter meetings from 6:00 to 8:00 p.m., usually on a Tuesday; no meetings in July and August in 2026
The September 8, 2026 meeting was hybrid at Palo Alto Networks headquarters in Santa Clara; the address is shown after free registration on Luma. The 2026 meetings fell on second Tuesdays, but the chapter does not publish a fixed rule.
Free
San Francisco Bay Area; the 2026 meeting was online · Metro area
No regular schedule; one virtual meeting posted for 2026
The chapter held a virtual "revitalization" meeting for members and guests on April 8, 2026. No in-person meeting in 2026 was found. It has co-hosted evening events with the ISC2 San Francisco chapter, ISACA San Francisco and Cyversity Bay Area in the past.
Free
San Jose and Sunnyvale (host companies vary) · Metro area
Monthly evening meetings, usually on a Tuesday at 5:30 p.m., in person with a virtual option
Meetings in 2026 fell on the third Tuesday of the month, but the chapter does not publish that as a fixed rule. Registration is through Luma; the October 2026 meeting is free. The December holiday party is for members and approved guests only.
Free
Rotates among Pleasanton, Palo Alto, San Mateo, Redwood City, Mountain View and San Francisco · Metro area
Monthly evening meetups from 5:00 to 8:00 p.m.; host company and city change each month
Check the city before going: the July and September 2026 meetups were in Pleasanton, others in San Mateo, Palo Alto and San Francisco. The chapter has co-hosted meetups with CSA San Francisco and Pacific Hackers.
Free
Eli's Mile High Club or Cafe Van Kleef, Oakland · Metro area
Third Friday of the month (no start time published)
The site lists only the two bars and a third-Friday schedule, with no dated meetings. The last activity date is the most recent dated evidence found: an April 10, 2025 web archive capture of the site with the same schedule. Contact the group before going.
Quiet: last activity Apr 2025Free
Marufuku Ramen, Pruneyard Shopping Center, Campbell · Metro area
Third Thursday of the month, 7:30 p.m.; sometimes moved to another Thursday when the San Jose Sharks play at home
The group moved after DEF CON 34 (August 2026) from its downtown San Jose spot 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 go out on the group's Discord.
Free
Noisebridge, 272 Capp St, San Francisco · Metro area
Second Thursday of the month, 7:30 p.m.
The group's site gives a standing second-Thursday schedule at Noisebridge. The most recent dated meeting found is March 12, 2026 on Noisebridge's Meetup calendar; no later DC415 date was listed there when checked.
Quiet: last activity Mar 2026Free
Near the Ashby BART station, Berkeley (exact spot shared by message) · Metro area
Usually a Sunday at 11:00 a.m., on or near the Sunday next to the second Monday of the month; rain delays are common
The group posts meeting dates on Bluesky, where it announced on June 7, 2026 that the meeting was being held that day and announced a July 12, 2026 meeting. Its website still showed the July 2026 meeting when checked in September. Dates move for weather and holidays, so check Bluesky before going.
Free
Palo Alto, Sunnyvale and San Francisco (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 runs the Pacific Hackers Conference, held November 1, 2025 at Plug and Play Tech Center in Sunnyvale.
Free
4 Embarcadero Center, ground level by the information kiosk, San Francisco · 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 still named this meeting; no post confirms that a specific meeting took place.
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 and the closest 2600 meeting to Fremont. The last activity date is the first Friday of September 2026, when the magazine's September list still named this meeting; no post confirms that a specific meeting took place.
Free
Palo Alto and Sunnyvale (host companies vary), some online · 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 when checked.
Free
San Francisco Bay Area (meeting places not published) · Metro area
No published schedule; events are posted on Cyversity's member platform
Cyversity (formerly ICMCP) supports women, underrepresented communities and veterans in cybersecurity; membership is paid. The chapter page is current, but its event listings could not be read without logging in. The last activity date is the joint speaker event with ISC2, ISACA and ISSA San Francisco on July 31, 2025, from the ISC2 San Francisco calendar.
Quiet: last activity Jul 2025Paid
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 last activity date is the May 19, 2026 session it co-sponsored with ISSA Silicon Valley. Its events page also lists a lightning-talk night at Nutanix in San Jose on Thursday, September 24, without a year.
Free
Ohlone College, 43600 Mission Blvd, Fremont, and the Newark Center · In the city
Cybersecurity degree and certificate programs; free summer CyberCamps for grades 8 to 12 in some years
Ohlone College is an NSA National Center of Academic Excellence in Cyber Defense Education. With the Bay Area Cyber League it hosted free in-person CyberCamps at the Newark Center in June 2025 (introductory June 9 to 13, intermediate June 16 to 20); the Bay Area Cyber League also held its spring 2024 regional student competition at the Fremont campus on April 20, 2024. No 2026 camp or public event at Ohlone was found, and no student security club with its own page was found.
Quiet: last activity Jun 2025Free
San Jose State University, ISB 842 · Metro area
During the semester: CTF practice Fridays at 2:15 p.m. and workshops Thursdays at 1:30 p.m.
San Jose State is an NSA CAE school. The club's last dated event is an Intro to Network Defense workshop on October 10, 2025; its officer list is for fall 2025. SJSU also has a WiCyS student chapter.
Quiet: last activity Oct 2025Students only
City View at Metreon, 135 4th St, San Francisco · Metro area
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; the site had not announced 2027 dates when checked.
Quiet: last activity Mar 2026Paid
San Francisco (host companies vary) · Metro area
Evening meetups every month or two, 5:30 to 8:00 p.m.
The most recent meetup found was July 29, 2026 at 600 Illinois St, San Francisco. The chapter says local membership and events are free. No later date was posted when checked.
Free
Fremont (Downtown Event Center and city community centers) · In the city
About one tech talk a month on weekends; dates posted on the chapter calendar
A general computing chapter, not a security group. It has run security talks: "The AI Paradox in Security" on October 26, 2025 at the Irvington Community Center and "The Rise of Intelligent Attacks and Smarter Defenses" on May 16, 2026 at the Fremont Downtown Event Center, 3500 Capitol Ave. Its September 26, 2026 talk is on AI and software architecture.
Free
Numbered references for the listings on this page.