OWASP Global AppSec USA 2026
Mon, Nov 2 to Fri, Nov 6, 2026 · Training November 2 to 4; conference November 5 to 6
Hyatt Regency San Francisco, San Francisco · Regional
The OWASP Foundation's largest US conference.
ConfirmedConferencePaid
California
Modesto, CA cybersecurity events & groups
Modesto has no professional security chapter of its own. The local scene is DC209, a DEF CON group that meets at a Turlock pizza restaurant, a student computer club at Modesto Junior College that lists cybersecurity among its topics, and a Google Developer Group that held DevFest Central Valley in Modesto on October 24, 2026. Most chapter meetings and conferences are in Sacramento, the East Bay or San Francisco, about one to two hours away; BSidesSF is set for April 3 and 4, 2027.
Start here
- DC209 (DEF CON Group 209): The only security-focused community group in the area; free, open to all levels, and announces meetings on its Discord.
- ISC2 East Bay Fall Conference 2026: Do I Know You? Identity in the Age of AI: The nearest community-run security conference in the coverage window is on November 13, 2026 in Livermore, about an hour and a half away, with student pricing.
- Modesto Junior College Computer and Information Science Club: MJC students can join Thursday meetings that include cybersecurity topics; the club published a September 10, 2026 to April 15, 2027 schedule.
Six months at a glance
Datebook
November 2026
SANS San Francisco 2026
Mon, Nov 2 to Sat, Nov 7, 2026
Hilton San Francisco Financial District, 750 Kearny St, San Francisco · Regional
Paid multi-day SANS courses, in person and online.
ConfirmedTrainingPaidVendor-hosted
Modesto Junior College Computer and Information Science Club
Thu, Nov 5, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
ThreatModCon San Francisco 2026
Fri, Nov 6 to Sat, Nov 7, 2026 · Reception on November 6; conference on November 7
Hyatt Regency Embarcadero, San Francisco · Regional
A small threat modeling conference (under 120 attendees) run by the Threat Modeling Connect community; vendor_hosted is a judgement call. No ticket price was readable on the page.
ConfirmedConferencePaidVendor-hosted
Modesto Junior College Computer and Information Science Club
Thu, Nov 12, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
ISC2 East Bay Fall Conference 2026: Do I Know You? Identity in the Age of AI
Fri, Nov 13, 2026 · 8:00 a.m. to 5:00 p.m.
Las Positas College, Building 2400, Livermore · Regional
Run by the ISC2 East Bay Chapter, a nonprofit; sponsors fund it. Early-bird tickets run from $45 for full-time students to $100 to $170 for members and guests; up to 13 CPEs.
ConfirmedConferencePaid
Modesto Junior College Computer and Information Science Club
Thu, Nov 19, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Nov 26, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
December 2026
Modesto Junior College Computer and Information Science Club
Thu, Dec 3, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Dec 10, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Dec 17, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Dec 24, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Dec 31, 2026 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
January 2027
Modesto Junior College Computer and Information Science Club
Thu, Jan 7, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Jan 14, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Jan 21, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Jan 28, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
February 2027
Modesto Junior College Computer and Information Science Club
Thu, Feb 4, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Feb 11, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
The Official Cybersecurity Summit: Silicon Valley (February 2027)
Tue, Feb 16, 2027 · 8:00 a.m. to 6:00 p.m.
Santa Clara Marriott, 2700 Mission College Blvd, Santa Clara · Regional
A one-day summit run by the events business CyberRisk Alliance. Standard admission is $325, and admission is reserved for active cybersecurity, IT and information security practitioners, so registrations are screened.
ConfirmedSummitPaidVetting requiredVendor-hosted
Modesto Junior College Computer and Information Science Club
Thu, Feb 18, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Feb 25, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
March 2027
Modesto Junior College Computer and Information Science Club
Thu, Mar 4, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Mar 11, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Mar 18, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Mar 25, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
April 2027
Modesto Junior College Computer and Information Science Club
Thu, Apr 1, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
BSidesSF 2027
Sat, Apr 3 to Sun, Apr 4, 2027
Pier 27, San Francisco · Regional
CFP soft deadline: Mon, Nov 9, 2026
Volunteer-run community conference. The organizer's X account names Pier 27; the site's venue page still shows the 2026 venue. Registration is not open and no ticket price is stated; access is carried over as paid from earlier editions.
ConfirmedConferencePaid
RSAC 2027 Conference
Mon, Apr 5 to Thu, Apr 8, 2027
Moscone Center, 747 Howard St, San Francisco · Regional
Run by RSA Conference LLC. The dates come from the organizer's March 27, 2026 post on its X account and the Moscone Center calendar; rsaconference.com refused automated access.
ConfirmedConferencePaidVendor-hosted
Modesto Junior College Computer and Information Science Club
Thu, Apr 8, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Apr 15, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Apr 22, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
Modesto Junior College Computer and Information Science Club
Thu, Apr 29, 2027 · 5:00 p.m.
MJC East Campus, Center for Advanced Technologies, Room 229
Per published schedule; confirm with organizer.
MeetingStudents only
May 2027
September 2027
CSJVCC Summit: Preparing for Cybersecurity Month (2027)
Wed, Sep 22, 2027
Fresno area (venue not yet announced) · Regional
Run by the Central San Joaquin Valley Cybersecurity Consortium, a nonprofit project serving Fresno-area schools and businesses. No fee is stated; registration is required.
ConfirmedSummitFree
On the radar
Announced without a date, or expected from past editions. Not confirmed.
ISC2 East Bay Winter Conference 2027
Announced by the organizer; date not yet published.
East Bay (2026 conferences at Las Positas College, Livermore) · Regional
Date TBAConferencePaid
ISACA Sacramento Flagship Conference 2027
Usually held in mid-September (the 2026 conference ran September 17 and 18); 2027 dates not yet announced
Sacramento (2026 edition at Wyndham Sacramento) · Regional
ExpectedConferencePaid
Groups & associations
Hacker and grassroots groups
DC209 (DEF CON Group 209)
Pizza Factory, 1865 Countryside Dr, Turlock · Metro area
Most months on the third Wednesday, 6:00 p.m., at Pizza Factory in Turlock; confirm each meeting on the group's Discord
DEF CON group for the 209 area code (Modesto, Turlock, Stockton). Its site says it meets most months on the third Wednesday at Pizza Factory in Turlock. The last dated meeting found is May 21, 2025; it announced meetings through August 20, 2025 on X and now posts updates on Discord, which could not be read. The DEF CON forum page still shows an older "last Wednesday" schedule.
Quiet: last activity May 2025Free
Education and student groups
Modesto Junior College Computer and Information Science Club
MJC East Campus, Center for Advanced Technologies, Room 229 · In the city
Thursdays, 5:00 to 6:00 p.m., September 10, 2026 to April 15, 2027
General computing club for MJC students; the college lists cybersecurity among its topics alongside programming, information systems and data science. The latest dated meeting found is April 23, 2026 on the college calendar; the fall 2026 schedule is published but no dated fall meeting could be found.
Quiet: last activity Apr 2026Students only
Adjacent communities
Google Developer Group (GDG) Modesto
Modesto (venues vary) · In the city
Irregular; events posted on the chapter page
Adjacent: a general developer community, not a security group. It has hosted security talks (an Intro to Cyber Security session in February 2022) and ran DevFest Central Valley in Modesto on October 24, 2026 with the Stockton, Turlock and Merced GDGs. The chapter page lists no events after that date.
Free
Directory checklist
1 of 19 national directories list a local chapter
Field notes
- DC209's last dated meeting found is May 21, 2025. Its website still says it meets most months on the third Wednesday at Pizza Factory in Turlock, but meeting notices now go out on its Discord. Join the Discord before driving over.
- The Modesto Junior College club publishes a Thursday schedule through April 15, 2027, but the latest dated meeting found is April 23, 2026, so it is listed as quiet.
- No ISSA, ISACA, ISC2, OWASP, WiCyS or InfraGard chapter meets in the Modesto area. The nearest meet in Sacramento (about 75 miles north) or the East Bay; ISC2 East Bay holds its monthly meetings on Zoom.
- The Modesto Junior College club is for enrolled MJC students and covers general computing as well as security.
- GDG Modesto is a general developer community. It is listed because it runs the area's main tech community event, not because it focuses on security.
- The Official Cybersecurity Summit in Santa Clara on February 16, 2027 screens registrations and admits practitioners only.
Sources
Numbered references for the listings on this page.
- S1https://owasp.glueup.com/event/owasp-global-appsec-usa-2026-167174/
- S2https://www.sans.org/cyber-security-training-events/san-francisco-2026
- S3https://www.mjc.edu/campuslife/clubs.html
- S4https://calendar.mjc.edu/event/mjc-computer-science-club-1323
- S5https://www.threatmodcon.com/san-francisco-2026
- S6https://isc2-eastbay-chapter.org/events/isc2-east-bay-fall-conference-2026/
- S7https://dc209.org/
- S8https://x.com/defcon209
- S9https://forum.defcon.org/node/231786
- S10https://cyberriskalliance.swoogo.com/silicon-valley-spring-2027
- S11https://bsidessf.org/cfp
- S12https://x.com/BSidesSF
- S13https://x.com/OneRSAC/status/2037560275084153303
- S14https://www.moscone.com/events/rsac-2027-conference
- S15https://www.csjvcc.org/
- S16https://engage.isaca.org/sacramentochapter/home
- S17https://www.eventbrite.com/e/isaca-sacramento-flagship-conference-cybersecurity-ai-risk-leadership-tickets-1999860180635
- S18https://gdg.community.dev/gdg-modesto/