Cloud Security Alliance Colorado Chapter
1125 17th Street, Denver (September 2026 meetup) · Metro area
Monthly evening meetups, usually on a Tuesday at 6:00 p.m.; dates posted on Meetup
Meetups in 2026 were held February 17, March 24, April 28, June 16, July 21, September 15 and October 20 (6:00 p.m., 1125 17th Street, Denver). Each meetup is paid for by a different company. The chapter's LIFT program organizes free networking events for women in cybersecurity (mentorship program, a December holiday party).
Free
csacolorado.org [S17] [S32] [S33] [S34] [S35]
Denver ISSA Chapter
Lunch meetings at Trace3, 4601 DTC Blvd, Denver; dinner meetings at Gensler, 1225 17th St, Denver · Metro area
Second Wednesday of the month: lunch session 11:30 a.m. at Trace3 (Denver Tech Center) and dinner session 5:30 p.m. at Gensler (downtown)
Chapter meetings are free for members and $25 for non-members. The October 14, 2026 lunch and dinner sessions were listed on Eventbrite and show as ended; the November 11, 2026 sessions are posted. The chapter also runs special interest group meetings (Women in Security, AI/ML) and the Rocky Mountain Information Security Conference (RMISC).
Paid
denverissa.org [S7] [S8] [S14] [S15] [S16]
ISACA Denver Chapter
Denver area; venue varies by meeting · Metro area
Monthly chapter meetings, mostly in person, plus certification classes; dates and venues posted on the chapter's Engage calendar
The chapter marked its 50th anniversary with the September meeting on September 18, 2026 at the Hyatt Regency Denver Tech Center (free to members). An October chapter meeting was posted for October 13, 2026 at noon and a November meeting for November 19, 2026. The CommunITy Day volunteer shift on October 3, 2026 was in Aurora.
Paid
engage.isaca.org/denverchapter/home [S13] [S36] [S37] [S38]
ISC2 Denver Chapter
Denver metro; the July 2026 in-person meeting was at 2 Penguins Tap and Grill, Centennial; some sessions are online · Metro area
Occasional in-person meetings and online sessions; dates are posted on the chapter site and Eventbrite
The most recent in-person meeting was July 29, 2026 at 2 Penguins Tap and Grill and Event Space, 13065 East Briarwood Avenue, Centennial. The chapter site isc2denver.org could not be reached when this entry was rechecked (the domain did not resolve), so the Eventbrite organizer page is the source; the ISC2 chapter community feed lists no events.
Free
isc2denver.org [S39] [S40] [S41] [S42] [S43]
OWASP Boulder Chapter
Rule4, 3002 Bluff Street, Suite 100, Boulder · Metro area
Irregular evening meetups at 6:00 p.m.; dates posted on Meetup
The most recent meetup was a double-header on September 22, 2026; the one before it was October 21, 2025. A meetup is posted for October 27, 2026. Boulder is about 35 miles northwest of Aurora and is in this page's metro area.
Free
meetup.com/owasp-boulder [S44] [S45]
OWASP Denver Chapter
Dave & Buster's, 2000 S Colorado Blvd, Denver (recent meetups) · Metro area
Monthly evening meetups at 5:30 p.m. ("Mile High OWASP"); dates posted on Meetup
Recent meetups: August 27, September 17 and a CTF night on September 18, 2026. The chapter runs SnowFROC, its annual application security conference (April 16 to 17, 2026 at the Cable Center, Denver).
Free
owasp.org/www-chapter-denver [S46] [S47]