DC303: Post-Quantum Cybersecurity: Exploring the Quantum Threat Landscape
Fri, Sep 25, 2026 · 7:00 p.m. to 9:00 p.m.
denhac, 700 Kalamath Street, Denver · Metro area
ConfirmedMeetupFree
Colorado
Aurora, CO cybersecurity events & groups
Aurora hosts three large conferences at the Gaylord Rockies Resort & Convention Center: ISC2 Security Congress (October 24 to 28, 2026), the Executive Women's Forum annual conference (November 4 to 6, 2026) and the WiCyS 2027 conference (March 17 to 19, 2027). Regular meetings take place in neighboring Denver and the Denver Tech Center: monthly ISSA, ISACA, OWASP and Cloud Security Alliance chapter meetings, the DenverSec social on third Wednesdays and DC303 talks at the denhac hackerspace.
Start here
- DenverSec: Free monthly social with no talks or sales pitches; everyone is welcome.
- DC303 (Denver DEF CON Group): Free evening talks and hands-on labs at the Denver hackerspace, with dates posted months ahead.
- OWASP Denver Chapter: Free monthly application security meetups, plus the SnowFROC conference each spring.
Six months at a glance
September 2026
| S | M | T | W | T | F | S |
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| 1 | 2 | 3 | 4 | 5 | ||
| 6 | 7 | 8 | 9 | 10 | 11 | 12 |
| 13 | 14 | 15 | 16 | 17 | 18 | 19 |
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| 27 | 28 | 29 | 30 |
Datebook
September 2026
October 2026
SecureWorld Denver 2026
Thu, Oct 1, 2026
The Curtis Hotel, 1405 Curtis Street, Denver · Metro area
The page shows a generic "This event has already passed" banner, a known template error on the SecureWorld site; the 2026 event is listed for October 1, 2026 with registration open. WiCyS Colorado plans a booth.
ConfirmedConferencePaidVendor-hosted
Denver 2600
Fri, Oct 2, 2026 · 6:00 p.m.
Denver Pavilions, 16th Street and Glenarm, Denver (outdoors) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
ISACA Denver CommunITy Day (Food Bank of the Rockies volunteer shift)
Sat, Oct 3, 2026 · 8:45 a.m. to noon
Food Bank of the Rockies, 20600 E 38th Ave, Aurora
A community service shift for chapter members, not a talk. Limited to 25 volunteers; each volunteer registers on both the chapter site and the food bank's site.
ConfirmedMeetupMembers only
WiCyS Summit Across Colorado
Tue, Oct 6, 2026 · 5:00 p.m. to 7:00 p.m.
UCCS Kevin W. O'Neil Cybersecurity Center, 3650 N. Nevada Ave, Colorado Springs · Regional
Speed networking for Colorado's WiCyS university, state and industry chapters, paid for and staffed by Deloitte. Registration required; the link had not been posted.
ConfirmedSummitFreeVendor-hosted
IdentiBeer Denver
Wed, Oct 7, 2026 · 4:00 p.m. to 6:00 p.m.
CV Tap House & Kitchen, 6460 S Syracuse Way, Centennial · Metro area
Adjacent: identity and access management community.
ConfirmedMeetupFree
Denver ISSA Chapter
Wed, Oct 14, 2026 · 11:30 a.m.
Lunch meetings at Trace3, 4601 DTC Blvd, Denver; dinner meetings at Gensler, 1225 17th St, Denver · Metro area
Per published schedule; confirm with organizer.
MeetingPaid
DC303: The Coroner's Report, a guided autopsy of msfvenom's Windows shellcode
Fri, Oct 16, 2026 · 7:00 p.m. to 10:00 p.m.
denhac, 700 Kalamath Street, Denver · Metro area
Interactive lab; participants bring a Windows 11 virtual machine set up with the organizer's script.
ConfirmedWorkshopFree
DenverSec
Wed, Oct 21, 2026 · 7:00 p.m.
Improper City, Denver (RiNo); location can vary · Metro area
Per published schedule; confirm with organizer.
MeetingFree
ISC2 Security Congress 2026
Sat, Oct 24 to Wed, Oct 28, 2026
Gaylord Rockies Resort & Convention Center, 6700 N Gaylord Rockies Blvd, Aurora (also online)
ISC2's annual flagship conference, held in person and virtually, October 24 to 28, 2026.
ConfirmedConferencePaid
isc2.org/Insights/2026/06/security-congress-202… [S14] [S15]
November 2026
Executive Women's Forum 2026 Annual Conference
Wed, Nov 4 to Fri, Nov 6, 2026
Gaylord Rockies Resort & Convention Center, Aurora
Three days of leadership and technical tracks for women in cybersecurity, risk and technology. The Executive Women's Forum is a division of DSG Global, a company. The organizer describes the venue as Denver; the Gaylord Rockies is in Aurora.
ConfirmedConferencePaidVendor-hosted
Denver 2600
Fri, Nov 6, 2026 · 6:00 p.m.
Denver Pavilions, 16th Street and Glenarm, Denver (outdoors) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Denver ISSA Chapter
Wed, Nov 11, 2026 · 11:30 a.m.
Lunch meetings at Trace3, 4601 DTC Blvd, Denver; dinner meetings at Gensler, 1225 17th St, Denver · Metro area
Per published schedule; confirm with organizer.
MeetingPaid
DenverSec
Wed, Nov 18, 2026 · 7:00 p.m.
Improper City, Denver (RiNo); location can vary · Metro area
Per published schedule; confirm with organizer.
MeetingFree
December 2026
Denver 2600
Fri, Dec 4, 2026 · 6:00 p.m.
Denver Pavilions, 16th Street and Glenarm, Denver (outdoors) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Denver ISSA Chapter
Wed, Dec 9, 2026 · 11:30 a.m.
Lunch meetings at Trace3, 4601 DTC Blvd, Denver; dinner meetings at Gensler, 1225 17th St, Denver · Metro area
Per published schedule; confirm with organizer.
MeetingPaid
CSA Colorado Holiday Party
Fri, Dec 11, 2026 · 6:00 p.m. to 10:00 p.m.
Denver (venue not yet posted) · Metro area
The chapter's annual holiday party, listed under its LIFT program's 2026 events. The organizer page does not name the 2026 venue or say whether registration is needed; the 2025 party was at Wynkoop Brewing, downtown Denver.
ConfirmedMeetupFree
DC303: Signal Hijacked, the blind spot in your mobile network
Fri, Dec 11, 2026 · 7:00 p.m. to 9:00 p.m.
denhac, 700 Kalamath Street, Denver · Metro area
ConfirmedMeetupFree
DenverSec
Wed, Dec 16, 2026 · 7:00 p.m.
Improper City, Denver (RiNo); location can vary · Metro area
Per published schedule; confirm with organizer.
MeetingFree
January 2027
Denver 2600
Fri, Jan 1, 2027 · 6:00 p.m.
Denver Pavilions, 16th Street and Glenarm, Denver (outdoors) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Denver ISSA Chapter
Wed, Jan 13, 2027 · 11:30 a.m.
Lunch meetings at Trace3, 4601 DTC Blvd, Denver; dinner meetings at Gensler, 1225 17th St, Denver · Metro area
Per published schedule; confirm with organizer.
MeetingPaid
DenverSec
Wed, Jan 20, 2027 · 7:00 p.m.
Improper City, Denver (RiNo); location can vary · Metro area
Per published schedule; confirm with organizer.
MeetingFree
DC303: Missing, live-playing an ARG-style CTF
Fri, Jan 22, 2027 · 7:00 p.m. to 10:00 p.m.
denhac, 700 Kalamath Street, Denver · Metro area
Easy to medium difficulty; bring a laptop with FTP, SSH and nmap.
ConfirmedCTFFree
February 2027
Denver 2600
Fri, Feb 5, 2027 · 6:00 p.m.
Denver Pavilions, 16th Street and Glenarm, Denver (outdoors) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Denver ISSA Chapter
Wed, Feb 10, 2027 · 11:30 a.m.
Lunch meetings at Trace3, 4601 DTC Blvd, Denver; dinner meetings at Gensler, 1225 17th St, Denver · Metro area
Per published schedule; confirm with organizer.
MeetingPaid
DenverSec
Wed, Feb 17, 2027 · 7:00 p.m.
Improper City, Denver (RiNo); location can vary · Metro area
Per published schedule; confirm with organizer.
MeetingFree
March 2027
Denver 2600
Fri, Mar 5, 2027 · 6:00 p.m.
Denver Pavilions, 16th Street and Glenarm, Denver (outdoors) · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Denver ISSA Chapter
Wed, Mar 10, 2027 · 11:30 a.m.
Lunch meetings at Trace3, 4601 DTC Blvd, Denver; dinner meetings at Gensler, 1225 17th St, Denver · Metro area
Per published schedule; confirm with organizer.
MeetingPaid
DenverSec
Wed, Mar 17, 2027 · 7:00 p.m.
Improper City, Denver (RiNo); location can vary · Metro area
Per published schedule; confirm with organizer.
MeetingFree
WiCyS 2027 Annual Conference
Wed, Mar 17 to Fri, Mar 19, 2027
Gaylord Rockies Resort & Convention Center, 6700 N Gaylord Rockies Blvd, Aurora
Call for presenters closes: Wed, Sep 30, 2026
Conference scholarship applications close: Wed, Sep 30, 2026
Student poster submissions close: Wed, Nov 4, 2026
The 13th annual Women in CyberSecurity conference, with a career fair and a CTF. General registration opens December 9, 2026. The organizer lists the venue as Denver with an Aurora street address.
ConfirmedConferencePaid
May 2027
July 2027
SANS Rocky Mountain 2027
Mon, Jul 26 to Sat, Jul 31, 2027
Grand Hyatt Denver, 1750 Welton Street, Denver (also online) · Metro area
Early-bird discount payment deadline: Wed, Jan 6, 2027
Hotel group rate deadline: Fri, Jul 2, 2027
Refund deadline: Fri, Jul 9, 2027
Fourteen courses. Commercial training by the SANS Institute.
ConfirmedTrainingPaidVendor-hosted
On the radar
Announced without a date, or expected from past editions. Not confirmed.
BSides Colorado Springs
Announced by the organizer; date not yet published.
Colorado Springs · Regional
Date TBAConferenceFree
BSides Boulder 2027
Usually held in June; 2027 date not yet announced
Boulder · Metro area
ExpectedConferencePaid
BSides Denver 2027
Held in September in 2026; 2027 date not yet announced
Denver · Metro area
ExpectedConferencePaid
OWASP SnowFROC 2027
Usually held in spring (March 14, 2025; April 16 to 17, 2026); 2027 dates not yet announced
Denver · Metro area
ExpectedConferencePaid
Groups & associations
Professional associations
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 and September 15. Each meetup is paid for by a different company. The chapter's LIFT program organizes free networking events for women in cybersecurity (mentorship program, golf lessons, a December holiday party).
Free
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 chapter also runs special interest group dinners (a Women in Security SIG dinner is posted for September 30, 2026) and the Rocky Mountain Information Security Conference (RMISC). The October 14, 2026 lunch and dinner meetings are posted on Eventbrite. No September 2026 chapter meeting was found.
Paid
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). Its CommunITy Day volunteer shift on October 3, 2026 is in Aurora.
Paid
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
Hacker and grassroots groups
Colorado = Security
Statewide; 2026 summer picnic at Clement Park, Littleton · Metro area
Annual community summer picnic; a statewide events calendar, Slack workspace and podcast; separate peer community for security leaders
Community site running the Colorado = Security podcast and a shared calendar of Colorado security events. Its 2026 summer picnic, co-organized with local chapters, was held on August 22, 2026 (Colorado = Security calendar and DenverSec; the CSA LIFT page says August 23). Monthly dinners and a twice-yearly summit are limited to director-level and higher security leaders.
Free
DC303 (Denver DEF CON Group)
denhac, 700 Kalamath Street, Denver · Metro area
Typically fourth Fridays, 7:00 p.m. to 9:00 p.m.; dates move to fit speakers
Talks and hands-on labs at the denhac hackerspace. Meetings in 2026 so far: February 27, May 22 and August 28. RSVP on Meetup is optional.
Free
Denver 2600
Denver Pavilions, 16th Street and Glenarm, Denver (outdoors) · Metro area
First Friday of the month, about 6:00 p.m.
Part of 2600 Magazine's monthly meeting network. The last activity date is the first Friday of September 2026, when 2600 Magazine's current meeting list (September) still lists Denver; no post confirms that a specific meeting took place. The group's site says it moved to the Denver Pavilions.
Free
DenverSec
Improper City, Denver (RiNo); location can vary · Metro area
Usually the third Wednesday of the month, 7:00 p.m.
A CitySec social: no presentations, and sales pitches are discouraged. Recent meetups were July 15, August 19 and September 16, 2026 at Improper City. The group says dates and places can vary and posts each meetup on Mastodon.
Free
Northside Cyber
Westminster (June 2026 meetup at The Stillery) · Metro area
Quarterly evening networking meetup; next date not posted
Casual networking for information security professionals in the north metro. The June 11, 2026 meetup at The Stillery, 10633 Westminster Blvd, was paid for by several security vendors.
FreeVendor-hosted
Inclusion and career communities
Cyversity Denver Chapter
Denver metro; venue varies · Metro area
Irregular; no event posted
Cyversity was formerly ICMCP. The only dated 2026 activity found is the February 19, 2026 networking evening in Greenwood Village co-hosted with WiCyS Colorado.
Quiet: last activity Feb 2026Free
WiCyS Colorado Affiliate
Denver metro; venue varies · Metro area
Irregular networking events, panels and an annual CyberCon; announced on wicys.org and the affiliate newsletter
The most recent event found was Cyber Galentines Speed Networking on February 19, 2026 at Cyber Qubits in Greenwood Village, co-hosted with Cyversity Denver. The affiliate is listed with a booth at SecureWorld Denver on October 1, 2026. Its third CyberCon was scheduled for November 11, 2025 at the University of Denver; no 2026 CyberCon has been announced.
Quiet: last activity Feb 2026Free
Public-private and government
InfraGard Denver Members Alliance (IDMA)
Denver; the chapter covers all of Colorado and Wyoming; venues not posted publicly · Metro area
Quarterly training events, sector (SIG) meetings and special events for members; no dates posted on the public site
The local chapter of InfraGard, the FBI's partnership with the private sector for critical infrastructure protection; membership requires an application and FBI vetting. No meeting date was found on the chapter site, LinkedIn, Eventbrite or InfraGard National's pages, so the last activity date is the most recent dated evidence of chapter activity: the chapter's sector chief roster was updated on June 9, 2026 (timestamps in the site's published roster data). The public events page is empty; events are announced to members.
Vetting required
Education and student groups
DU Cyber Club (University of Denver)
ECS Building, University of Denver, Denver · Metro area
Meetings during the academic year; the fall 2026 kickoff was Thursday, September 10, 6:00 p.m., ECS room 357
The University of Denver is an NSA Center of Academic Excellence in Cyber Defense. The club practices for CTFs and builds competition teams.
Students only
Conference series
BSides Boulder
Wolf Law Building, University of Colorado, Boulder (2026 edition) · Metro area
Annual one-day community conference in June
The sixth edition was held June 13, 2026. One aggregator lists June 12; the organizer's site and Eventbrite say June 13.
Paid
BSides Denver
Void Studios, 1790 S Bannock St, Denver (2026 edition) · Metro area
Annual one-day community conference; held September 11, 2026
Nonprofit, volunteer-run. General admission for 2026 was $30.
Paid
SecureWorld Denver
The Curtis Hotel, Denver (2026 edition) · Metro area
Annual one-day conference each fall; 2026 is the 14th edition
Run by SecureWorld, a conference business. The 13th edition was held October 9, 2025 at the Cable Center, University of Denver; the quiet status reflects that date, and the 2026 edition is on October 1, 2026.
Quiet: last activity Oct 2025PaidVendor-hosted
Training
SANS Rocky Mountain (training event)
Downtown Denver hotels (Grand Hyatt Denver for 2027) · Metro area
Annual week of in-person and online SANS courses; April in 2026, July in 2027
Commercial training run by the SANS Institute. The last activity date is a SANS@Night talk held during SANS Rocky Mountain 2026 on April 22, 2026; a hotel listing gives the 2026 event as April 20 to 25.
PaidVendor-hosted
sans.org/cyber-security-training-events/rocky-m… [S23] [S51]
Adjacent communities
IdentiBeer Denver
CV Tap House & Kitchen, 6460 S Syracuse Way, Centennial · Metro area
Irregular after-work meetups, 4:00 p.m. to 6:00 p.m.; next posted October 7, 2026
Adjacent: a community of identity and access management professionals, security-relevant but not security-only. Vendor-neutral; sales pitches are not allowed. Held March 18 and May 21, 2026.
Free
Directory checklist
14 of 19 national directories list a local chapter
| Directory | Result |
|---|---|
| 2600 Meetings | Local chapter: Denver 2600 |
| CISA Regional Offices | Nearest: CISA Region 8 |
| Cloud Security Alliance | Local chapter: Cloud Security Alliance Colorado Chapter |
| Cyversity (formerly ICMCP) Chapters | Local chapter: Cyversity Denver Chapter |
| DEF CON Groups | Local chapter: DC303 (Denver DEF CON Group) |
| HTCIA | No chapter found |
| IAPP KnowledgeNet | Nearest: IAPP KnowledgeNet Denver (no meetings scheduled) |
| InfraGard Members Alliances | Local chapter: InfraGard Denver Members Alliance (IDMA) |
| ISACA | Local chapter: ISACA Denver Chapter |
| ISC2 | Local chapter: ISC2 Denver Chapter |
| ISSA | Local chapter: Denver ISSA Chapter |
| NSA National Centers of Academic Excellence in Cybersecurity (NCAE-C) | Local chapter: DU Cyber Club (University of Denver) |
| OWASP | Local chapter: OWASP Denver Chapter |
| SANS Institute | Local chapter: SANS Rocky Mountain (training event) |
| SecureWorld | Local chapter: SecureWorld Denver |
| Security BSides | Local chapter: BSides Denver |
| TOOOL (The Open Organisation Of Lockpickers) | No chapter found |
| WiCyS (Women in CyberSecurity) Professional Affiliates | Local chapter: WiCyS Colorado Affiliate |
| Women's Society of Cyberjutsu (WSC) Chapters | No chapter found |
Dormant groups
1 group with no public activity for 18 months or more
- ISC2 Denver Chapter: last public activity Dec 2024 [S53] [S54]
Field notes
- Aurora's own security calendar is mostly large conferences at the Gaylord Rockies, near Denver International Airport. Routine meetings are 10 to 25 miles away in downtown Denver, the Denver Tech Center or Centennial.
- Organizers of the Gaylord Rockies conferences (EWF, WiCyS) often describe the venue as Denver; its address is in Aurora.
- DenverSec and Denver 2600 meet in changing or outdoor spots; check the organizer's latest post before going.
- Denver ISSA meetings cost $25 for non-members; ISACA Denver meetings are free to members.
- ISC2 Denver currently posts online sessions only; IAPP KnowledgeNet Denver had no dated events on its public page on September 24, 2026.
- InfraGard Denver posts no event dates publicly; its meetings are announced to vetted members.
- BSides Colorado Springs postponed its 2026 conference; the BSides global directory still shows the old date.
Sources
Numbered references for the listings on this page.
- S1https://dc303.org/2026/09/25/post-quantum-cryptography.html
- S2https://events.secureworld.io/details/denver-co-2026/
- S3https://denver.2600.horse/
- S4https://www.2600.com/meetings/
- S5https://engage.isaca.org/denverchapter/events/eventdescription?CalendarEventKey=24fbe833-b9bc-45bb-a3ca-01a044a8c7e8&CommunityKey=9809e7d6-9c42-4cbb-ae66-87d804f3eb48&Home=%2fdenverchapter%2fevents%2fcalendar
- S6https://cybersecurity.uccs.edu/events
- S7https://www.meetup.com/identibeer-denver/events/316499391/
- S8https://www.denverissa.org/events
- S9https://www.eventbrite.com/o/denver-issa-chapter-70546058683
- S10https://www.eventbrite.com/e/denver-issa-august-2026-chapter-meeting-lunch-tickets-1992726799500
- S11https://dc303.org/2026/10/16/msfvenom-autopsy.html
- S12https://denversec.org/
- S13https://infosec.exchange/@DenverSec
- S14https://www.isc2.org/Insights/2026/06/security-congress-2026-agenda-announced
- S15https://isc2chapter-pikespeak.org/index.php/events
- S16https://www.ewfglobal.com/events/
- S17https://www.csacolorado.org/lift/events
- S18https://dc303.org/2026/12/11/qr-smishing.html
- S19https://dc303.org/2027/01/22/missing-arg-ctf.html
- S20https://www.wicys.org/events/wicys-2027/
- S21https://www.wicys.org/event/wicys-2027-annual-conference/
- S22https://www.rmisc.org/
- S23https://www.sans.org/cyber-security-training-events/rocky-mountain-2027
- S24https://www.bsidescos.org/
- S25https://bsides.org/event/bsides-cos-2026/
- S26https://bsidesboulder.org/
- S27https://www.bsidesden.org/
- S28https://snowfroc.com/
- S29https://www.meetup.com/denver-cloud-security-alliance-meetup/events/316272308/
- S30https://www.csacolorado.org/
- S31https://engage.isaca.org/denverchapter/events/eventdescription?CalendarEventKey=a6bc9cdb-cad0-44c6-968d-019ee5c0f75b&CommunityKey=9809e7d6-9c42-4cbb-ae66-87d804f3eb48&Home=%2Fdenverchapter%2Fevents%2Fcalendar
- S32https://www.meetup.com/owasp-denver-chapter/
- S33https://owasp.org/www-chapter-denver/
- S34https://www.colorado-security.com/
- S35https://www.colorado-security.com/security-events/
- S36https://dc303.org/meetings/
- S37https://dc303.org/
- S38https://luma.com/1nf1uk6o
- S39https://www.cyversity.org/chapters
- S40https://www.wicys.org/events/2026-02-19/
- S41https://www.wicys.org/wicys-colorado-affiliate/
- S42https://www.wicysco.org/events
- S43https://www.denverinfragard.org/
- S44https://www.denverinfragard.org/directors-sector-chiefs
- S45https://www.linkedin.com/company/infragard-denver
- S46https://www.infragardnational.org/about-us/infragard-chapters/
- S47https://crisp.cs.du.edu/news/du-cyber-club-kickoff-2026/
- S48https://www.eventbrite.com/e/bsides-boulder-2026-tickets-1985483738309
- S49https://www.bsidesden.org/event-details-registration/bsides-denver-2026-conference
- S50https://events.secureworld.io/details/denver-co-2025/
- S51https://www.sans.org/webcasts/rocky-mountain-2026-indispensable-career-moves-protect-current-future-next-steps
- S52https://www.meetup.com/identibeer-denver/
- S53https://www.isc2denver.org/events
- S54https://www.isc2denver.org/