SeaSec East
Wed, Nov 4, 2026 · 6:00 p.m.
Rotates between Bellevue, Redmond and Kirkland · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Washington
Seattle, WA cybersecurity events & groups
Seattle's free hacker meetings run every month: Seattle 2600 on first Fridays on East Thomas Street, Seattle Hackers Anonymous on last Tuesdays at Pine Box, a third-Thursday hardware hacking workshop at Seattle Makers, locksport nights, and weekly open hack nights at Black Lodge Research in Redmond. ISSA Puget Sound, ISACA Puget Sound and ISC2 Seattle hold chapter meetings in Mercer Island, Bellevue and online. SecureWorld Seattle runs November 4 to 5, 2026 in Bellevue, BSides Seattle is set for March 5 to 6, 2027 in Redmond, and SANS Seattle runs March 15 to 20, 2027.
Start here
- Seattle 2600: Free, open monthly hacker meeting inside the city, no registration needed.
- Symbol Crash: Hardware Hacking Hands-On Workshop: Free hands-on hardware hacking workshop every month; beginners get help.
- Black Lodge Research: Weekly open hack night at an information security hackerspace on the Eastside.
Six months at a glance
Datebook
November 2026
SecureWorld Seattle 2026
Wed, Nov 4 to Thu, Nov 5, 2026 · November 4: 7:00 a.m. to 4:30 p.m.; November 5: 7:00 a.m. to 4:15 p.m. (agenda page, including registration and early workshops)
Meydenbauer Center, Bellevue · Metro area
12 to 18 CPE credits depending on pass. Pricing is in a PDF linked from the event page, which was not read; chapters that promote the event post codes for a free Open Sessions pass and discounted Conference and PLUS passes. Parking is validated for Conference and PLUS pass holders at the registration desk; the garage itself does not validate. The host hotel room block is closed. The event page shows an "already passed" banner that is a template error on the organizer's site; the dates are unchanged.
ConfirmedConferencePaidVendor-hosted
Black Lodge Research
Thu, Nov 5, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Seattle 2600
Fri, Nov 6, 2026 · 6:00 p.m.
800 E Thomas St, Seattle
Per published schedule; confirm with organizer.
MeetingFree
OWASP Seattle
Wed, Nov 11, 2026 · 12:00 p.m.
Online (Zoom); occasional in-person events in Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Nov 12, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Identity, AI & Cybersecurity: Securing the Enterprise in an Agentic World
Thu, Nov 12, 2026 · 4:30 p.m. to 8:00 p.m.
Bellevue City Hall, 450 110th Ave NE, Bellevue · Metro area
Talks by Microsoft security and engineering staff on identity security, phishing-resistant credentials and AI agents, with check-in and networking before and after. The event page lists no price.
ConfirmedMeetupFree
Washington Digital Government Summit 2026
Thu, Nov 12, 2026 · Starts 8:00 a.m.
Greater Tacoma Convention Center, 1500 Commerce St, Tacoma · Metro area
Run by Government Technology for state and local public-sector leaders; a general technology event with cybersecurity among its topics, not security-focused. The event page states no price or eligibility rules, so the free access value is a judgement call carried over from the Tacoma research.
ConfirmedSummitFreeVendor-hosted
Black Lodge Research
Thu, Nov 19, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Symbol Crash: Hardware Hacking Hands-On Workshop
Thu, Nov 19, 2026 · 6:00 p.m.
Seattle Makers, 3012 16th Ave W, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Seattle Hackers Anonymous (SHA)
Tue, Nov 24, 2026 · 7:00 p.m.
Pine Box, 1600 Melrose Ave, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Nov 26, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
December 2026
Seattle Lockpicking and Locksport
Tue, Dec 1, 2026 · 7:00 p.m.
Fremont Brewing Urban Beer Garden, 1050 N 34th St, Seattle; also Tacoma and Bellevue
Per published schedule; confirm with organizer.
MeetingFree
SeaSec East
Wed, Dec 2, 2026 · 6:00 p.m.
Rotates between Bellevue, Redmond and Kirkland · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Dec 3, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
INTERFACE Seattle 2026
Thu, Dec 3, 2026 · 8:30 a.m. to 4:30 p.m.
Seattle Convention Center, Ballroom 6BC, 705 Pike St
IT infrastructure and security conference run by F2F Events. The registration page says participation is reserved for qualified IT professionals, registration requests may be declined, and consultants, business development, sales and marketing professionals must buy a sponsorship; it lists a complimentary lunch and no attendee price (judgement call on access). Supporting associations include ISACA Puget Sound, ISC2 Seattle, ISSA Puget Sound and InfraGard Washington.
ConfirmedConferenceVetting requiredVendor-hosted
ISC2 Seattle Chapter: Information security was never supposed to mean computer security
Thu, Dec 3, 2026 · 6:30 p.m. to 7:30 p.m.
7605 SE 27th St, Mercer Island (address on the chapter event page; venue name not stated) · Metro area
Talk by Gabby DeMercurio of Kaiju Security on social engineering across physical, human and digital boundaries. The event takes RSVPs and states no price, so free access is a judgement call; the page does not say whether there is an online option.
ConfirmedChapter meetingFree
ISSA Puget Sound "Seattle Tuxedo" Christmas Party 2026
Fri, Dec 4, 2026 · 7:00 p.m. to 10:00 p.m.
Flatstick Pub Redmond, 7530 164th Ave NE, Suite A108, Redmond · Metro area
Holiday social with putt putt golf, food and drinks; ages 21 and over, free parking. The ticket price of USD 40 appears only in the listing's data, not in the visible page text (judgement call on access).
ConfirmedMeetupPaid
Seattle 2600
Fri, Dec 4, 2026 · 6:00 p.m.
800 E Thomas St, Seattle
Per published schedule; confirm with organizer.
MeetingFree
OWASP Seattle
Wed, Dec 9, 2026 · 12:00 p.m.
Online (Zoom); occasional in-person events in Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Dec 10, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Dec 17, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Symbol Crash: Hardware Hacking Hands-On Workshop
Thu, Dec 17, 2026 · 6:00 p.m.
Seattle Makers, 3012 16th Ave W, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Dec 24, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Seattle Hackers Anonymous (SHA)
Tue, Dec 29, 2026 · 7:00 p.m.
Pine Box, 1600 Melrose Ave, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Dec 31, 2026 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
January 2027
Seattle 2600
Fri, Jan 1, 2027 · 6:00 p.m.
800 E Thomas St, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Seattle Lockpicking and Locksport
Tue, Jan 5, 2027 · 7:00 p.m.
Fremont Brewing Urban Beer Garden, 1050 N 34th St, Seattle; also Tacoma and Bellevue
Per published schedule; confirm with organizer.
MeetingFree
SeaSec East
Wed, Jan 6, 2027 · 6:00 p.m.
Rotates between Bellevue, Redmond and Kirkland · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Jan 7, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
OWASP Seattle
Wed, Jan 13, 2027 · 12:00 p.m.
Online (Zoom); occasional in-person events in Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Jan 14, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Jan 21, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Symbol Crash: Hardware Hacking Hands-On Workshop
Thu, Jan 21, 2027 · 6:00 p.m.
Seattle Makers, 3012 16th Ave W, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Seattle Hackers Anonymous (SHA)
Tue, Jan 26, 2027 · 7:00 p.m.
Pine Box, 1600 Melrose Ave, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Jan 28, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
February 2027
Seattle Lockpicking and Locksport
Tue, Feb 2, 2027 · 7:00 p.m.
Fremont Brewing Urban Beer Garden, 1050 N 34th St, Seattle; also Tacoma and Bellevue
Per published schedule; confirm with organizer.
MeetingFree
SeaSec East
Wed, Feb 3, 2027 · 6:00 p.m.
Rotates between Bellevue, Redmond and Kirkland · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Feb 4, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
ISC2 Seattle Chapter: AI applications for small businesses and small cyber teams
Thu, Feb 4, 2027 · 6:30 p.m. to 7:30 p.m.
7605 SE 27th St, Mercer Island (address on the chapter event page; venue name not stated) · Metro area
Talk by Scott Benson of Mud Bay on practical AI uses for incident response, vulnerability discovery and security workflows. The event takes RSVPs and states no price, so free access is a judgement call.
ConfirmedChapter meetingFree
Seattle 2600
Fri, Feb 5, 2027 · 6:00 p.m.
800 E Thomas St, Seattle
Per published schedule; confirm with organizer.
MeetingFree
OWASP Seattle
Wed, Feb 10, 2027 · 12:00 p.m.
Online (Zoom); occasional in-person events in Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Feb 11, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Feb 18, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Symbol Crash: Hardware Hacking Hands-On Workshop
Thu, Feb 18, 2027 · 6:00 p.m.
Seattle Makers, 3012 16th Ave W, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Seattle Hackers Anonymous (SHA)
Tue, Feb 23, 2027 · 7:00 p.m.
Pine Box, 1600 Melrose Ave, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Feb 25, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
March 2027
Seattle Lockpicking and Locksport
Tue, Mar 2, 2027 · 7:00 p.m.
Fremont Brewing Urban Beer Garden, 1050 N 34th St, Seattle; also Tacoma and Bellevue
Per published schedule; confirm with organizer.
MeetingFree
SeaSec East
Wed, Mar 3, 2027 · 6:00 p.m.
Rotates between Bellevue, Redmond and Kirkland · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Mar 4, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
BSides Seattle 2027
Fri, Mar 5 to Sat, Mar 6, 2027 · 8:00 a.m. to 7:00 p.m. per the conference site; the ticketing page lists 8:30 a.m. on March 5 to 6:00 p.m. on March 6
Microsoft Building 92, 15010 NE 36th St, Redmond · Metro area
Theme: Human Still Required. The conference page heads the dates "BSides Seattle 2027" but writes them without a year; the ticketing and call-for-speakers pages show 2027. The site's ticket page still lists earlier prices (USD 99 and USD 125) and the 2027 price was not found, so paid access is a judgement call; a limited number of scholarship tickets are offered by email. bsides.org lists the dates but says to look for a new venue in 2027; the organizer's pages give Building 92 in Redmond.
ConfirmedConferencePaid
Seattle 2600
Fri, Mar 5, 2027 · 6:00 p.m.
800 E Thomas St, Seattle
Per published schedule; confirm with organizer.
MeetingFree
OWASP Seattle
Wed, Mar 10, 2027 · 12:00 p.m.
Online (Zoom); occasional in-person events in Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Mar 11, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
SANS Seattle 2027
Mon, Mar 15 to Sat, Mar 20, 2027
Grand Hyatt Seattle, 721 Pine St, Seattle
Early-bird discount on 4 to 6 day courses ends: Tue, Nov 24, 2026
Hotel group discount deadline: Tue, Feb 23, 2027
Refund deadline: Fri, Feb 26, 2027
Commercial training run by the SANS Institute. In person and live online (Pacific Time).
ConfirmedTrainingPaidVendor-hosted
Black Lodge Research
Thu, Mar 18, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Symbol Crash: Hardware Hacking Hands-On Workshop
Thu, Mar 18, 2027 · 6:00 p.m.
Seattle Makers, 3012 16th Ave W, Seattle
Per published schedule; confirm with organizer.
MeetingFree
The Official Cybersecurity Summit: Seattle/Bellevue (13th edition)
Thu, Mar 18, 2027 · 8:00 a.m. to 6:00 p.m.
Hyatt Regency Bellevue, 900 Bellevue Way NE, Bellevue · Metro area
Run by CyberRisk Alliance for active security practitioners; the registration page says all registrations are subject to review and lists standard admission at USD 250. The cybersecuritysummit.com listing for the same date states admission of USD 350, so the price is uncertain. An older registration address for a 2027 edition (cyberriskalliance.swoogo.com/SeattleBellevue2027) returns HTTP 404; the address above loads.
ConfirmedSummitVetting requiredVendor-hosted
cyberriskalliance.swoogo.com/seattle-bellevue-s… [S27] [S28]
Black Lodge Research
Thu, Mar 25, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Seattle Hackers Anonymous (SHA)
Tue, Mar 30, 2027 · 7:00 p.m.
Pine Box, 1600 Melrose Ave, Seattle
Per published schedule; confirm with organizer.
MeetingFree
April 2027
Black Lodge Research
Thu, Apr 1, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Seattle 2600
Fri, Apr 2, 2027 · 6:00 p.m.
800 E Thomas St, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Seattle Lockpicking and Locksport
Tue, Apr 6, 2027 · 7:00 p.m.
Fremont Brewing Urban Beer Garden, 1050 N 34th St, Seattle; also Tacoma and Bellevue
Per published schedule; confirm with organizer.
MeetingFree
SeaSec East
Wed, Apr 7, 2027 · 6:00 p.m.
Rotates between Bellevue, Redmond and Kirkland · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Apr 8, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
OWASP Seattle
Wed, Apr 14, 2027 · 12:00 p.m.
Online (Zoom); occasional in-person events in Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Apr 15, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Symbol Crash: Hardware Hacking Hands-On Workshop
Thu, Apr 15, 2027 · 6:00 p.m.
Seattle Makers, 3012 16th Ave W, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Apr 22, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
Seattle Hackers Anonymous (SHA)
Tue, Apr 27, 2027 · 7:00 p.m.
Pine Box, 1600 Melrose Ave, Seattle
Per published schedule; confirm with organizer.
MeetingFree
Black Lodge Research
Thu, Apr 29, 2027 · 7:00 p.m.
17725 NE 65th St Ste A-155, Redmond · Metro area
Per published schedule; confirm with organizer.
MeetingFree
May 2027
FutureCon Seattle 2027
Thu, May 13, 2027
Seattle area (venue not stated on the event page); hybrid with a virtual option · Metro area
Run by FutureCon Events for security executives and practitioners; 10 CPE credits. The FAQ says all registrations are subject to approval and excludes students, recruiters, marketing, sales, independent consultants and outside vendors. Neither the event page nor the FAQ states a price (judgement call on access), and the venue is not named; the organizer's 2026 Seattle edition was held in Bellevue per an aggregator listing only.
ConfirmedConferenceVetting requiredVendor-hosted
Groups & associations
Professional associations
ISACA Puget Sound Chapter
Bellevue (Embassy Suites Bellevue for recent meetings) · Metro area
Monthly meetings, September through May: evenings 6:00 p.m. to 7:30 p.m. in Bellevue, plus some online lunchtime sessions
In-person evening meetings cost $20 for members and $30 for non-members and include 1 to 1.5 CPE credits; an online lunchtime session on November 10, 2026 is free for members and $20 for non-members. The chapter also runs a SheLeadsTech social mixer.
Paid
engage.isaca.org/pugetsoundchapter/home [S31] [S32] [S33] [S34]
ISC2 Seattle Chapter
Mercer Island Community & Event Center, Mercer Island, and on Zoom · Metro area
Thursday evening meetings at the Mercer Island Community & Event Center or nearby, usually 6:00 p.m. to 8:00 p.m. (the December 3, 2026 and February 4, 2027 sessions are listed 6:30 p.m. to 7:30 p.m.); meeting list on the chapter's ISC2 community page
The chapter domain isc2seattle.org forwards to the ISC2 chapter community platform, which lists the chapter's meetings; its JSON event feed was read for dates. The chapter met on September 3, 2026 (fireside session with author Kayne McGladrey) and on October 1, 2026 (a group presentation on 250 years of cybersecurity). The feed lists no November 2026 chapter meeting. The chapter also promotes other organizations' events, which are listed under their own organizers.
Free
isc2chapters.isc2.org/topics/49928/page/overvie… [S20] [S22] [S35]
ISSA Puget Sound Chapter
Mercer Island Community & Event Center, 8236 SE 24th St, Mercer Island · Metro area
Monthly evening meetings with a featured speaker, usually on a Thursday; no August meeting in 2026
Serves the greater Seattle area and most of Western Washington. Registration is required; the organizer pages do not state a price for meetings. The chapter's 2026 meetings were April 16, May 21, June 18, July 16, September 17 and October 15; its events page posts no further meeting date.
Free
ISSA Rainier Chapter
Washington State History Museum, 1911 Pacific Ave, Tacoma · Metro area
Every other month on a Thursday evening, 6:00 p.m. to 10:00 p.m. at the Washington State History Museum; the events page lists April 30, June 25, August 27 and October 29, 2026
Events are free and open to the public; membership is not required. The October 29, 2026 meeting is a joint event with the ISACA Mt. Rainier chapter.
Free
OWASP Seattle
Online (Zoom); occasional in-person events in Seattle · In the city
Monthly Security Social Lunch Hour on Zoom, second Wednesday at noon; occasional evening talks
Regular meetings are online. The Meetup page lists no in-person event after August 21, 2025; the other events it lists are online, including an evening talk on October 29, 2026.
Free
Hacker and grassroots groups
Black Lodge Research
17725 NE 65th St Ste A-155, Redmond · Metro area
Open Hack Night every Thursday, 7:00 p.m.; member talks announced on Meetup
Information security hackerspace. Open Hack Night is open to anyone who wants to see the space. Its own website has not posted news since 2018; the Meetup page is current.
Free
DCG Tacoma (DC253)
Tacoma · Metro area
Last Friday of each month at Devil's Reef in Tacoma (21+); members also run the second-Tuesday Tacoma lockpicking night
Most coordination happens on the group's Discord. The group's site says it meets on the last Friday of each month at Devil's Reef (21+) but gives no dated meetings; the most recent dated activity is the October 13, 2026 Tacoma lockpicking night, which the host listing credits to the DC253 crew.
Free
SeaSec East
Rotates between Bellevue, Redmond and Kirkland · Metro area
First Wednesday of every month, 6:00 p.m.; venue rotates, check each event
Casual dinner-table networking for security practitioners, typically 4 to 8 people; dinner is pay your own way. The Meetup group is now private: event venues are shown to members only, so check the event after joining.
Free
Seattle 2600
800 E Thomas St, Seattle · In the city
First Friday of every month, 6:00 p.m. to 8:00 p.m.
Part of the worldwide 2600 Magazine meeting network. The website and 2600.com name Gearhouse Coffee; the Meetup event pages name Base Camp at the same address, 800 E Thomas St Ste A. The Meetup group description gives a 5:00 p.m. start and still carries a template line asking the organizer to add the real start time; the website, 2600.com and the Meetup event listings give 6:00 p.m.
Free
Seattle Hackers Anonymous (SHA)
Pine Box, 1600 Melrose Ave, Seattle · In the city
Almost always the last Tuesday of the month, 7:00 p.m. to 9:00 p.m.
Short 5 to 10 minute talks on computer and physical security, pentesting, electronics and programming. No formal membership. The group started in August 2026 and held meetings on August 25 and September 29, 2026, in the upper floor of Pine Box. Its website header reads "Seattle Hackers Association"; the text and Meetup page use Seattle Hackers Anonymous.
Free
Seattle Lockpicking and Locksport
Fremont Brewing Urban Beer Garden, 1050 N 34th St, Seattle; also Tacoma and Bellevue · In the city
Seattle: first Tuesday, 7:00 p.m. to 9:00 p.m. at Fremont Brewing. Tacoma: second Tuesday, 6:00 p.m. at The Church Cantina. Eastside: third Tuesday, 7:00 p.m. at Bellevue Brewing Company, Spring District.
Not a TOOOL chapter. Bring picks and locks or borrow the group's; walk-ups welcome. The recurrence shown is the Seattle meeting only. The Redmond brewpub that hosted the Eastside meeting has closed, and the group's site calls Bellevue Brewing Company its regular east-side spot. The Tacoma night is run by the DC253 crew.
Free
Symbol Crash: Hardware Hacking Hands-On Workshop
Seattle Makers, 3012 16th Ave W, Seattle · In the city
Third Thursday of the month, 6:00 p.m. to 8:00 p.m., unless rescheduled for holidays or hacker events
No cover charge. Bring a laptop (Linux or macOS preferred); practice hardware and interface tools are provided. The workshop meets at Seattle Makers' new location, 3012 16th Ave W.
Free
Inclusion and career communities
WiCyS Western Washington Affiliate
Western Washington · Metro area
Occasional in-person socials and events; announced on LinkedIn and the affiliate mailing list
Most recent event found: a Women in Technology Roundtable on October 14, 2026, co-hosted with ElevateIT at the Seattle Technology Summit (Sheraton Grand Seattle), per the affiliate's LinkedIn page. Before that, a summer picnic on August 29, 2026.
Free
Public-private and government
Washington State InfraGard Chapter
Statewide; recent meetings at the University of Washington and The Museum of Flight, Seattle · In the city
Member meetings a few times a year, plus an occasional public meeting; announced on LinkedIn
FBI-affiliated nonprofit. Membership is free but requires an application and vetting through infragard.fbi.gov. Its July 24, 2026 meeting at the University of Washington was open to the public; the September 11, 2026 program at The Museum of Flight was members-only. The chapter's LinkedIn page shows no later chapter-run meeting.
Members onlyVetting required
Education and student groups
Batman's Kitchen (University of Washington CTF team)
More Hall 220, University of Washington, Seattle · In the city
Weekly meetings on Tuesdays, 5:30 p.m. to 7:30 p.m., in More Hall 230; Friday sessions for CTFs and events, 5:30 p.m. to 7:30 p.m., room to be announced
The University of Washington's cybersecurity club and CTF team; the university is an NCAE-C school. Open to UW students of any experience level. The club's public calendar (linked from its meetings page) lists meetings through May 28, 2026 and a security BBQ on May 30, 2026, and nothing dated after that, so last_activity rests on that calendar entry alone; the site now says Tuesday meetings, which fits the academic year. The club also hosted its own online competition, Batman's Kitchen CTF 2026, February 20 to 22, 2026.
Students only
GrayHats (UW Bothell cybersecurity club)
INV-140, University of Washington Bothell, Bothell · Metro area
During the academic year: general meetings Fridays, 12:00 p.m. to 2:00 p.m.; CCDC training Fridays, 2:00 p.m. to 4:00 p.m.; red team sessions Mondays, 1:30 p.m. to 3:30 p.m.; all in INV-140
Student-led club open to all skill levels and majors at UW Bothell. Runs workshops on offensive security, network defense and lockpicking, and trains for CCDC. The newest dated items on the club site are from February 2026, the last being the club's outing to BSides Seattle on February 28, 2026.
Quiet: last activity Feb 2026Students only
Conference series
BSides Seattle
Redmond (2026 edition at Microsoft Building 92) · Metro area
Annual two-day community conference; March 5 to 6, 2027, February 27 to 28 in 2026 and April 18 to 19 in 2025
Tickets are sold on Humanitix for 2027 (Eventbrite for 2026). The 2027 edition is announced on the conference site with a call for papers and sponsors open.
Quiet: last activity Feb 2026Paid
SecureWorld Seattle
Meydenbauer Center, Bellevue · Metro area
Annual two-day conference in early November
Run by a commercial events company. The most recent edition took place November 5 to 6, 2025; the 2026 edition (November 4 to 5, 2026) is posted with registration open, so the quiet status reflects only the annual gap.
Quiet: last activity Nov 2025PaidVendor-hosted
Technical user groups
Cloud Security Alliance Seattle Chapter
Bellevue and Kirkland venues · Metro area
Irregular evening meetups, a few times a year; none announced
Chapter membership is free and open to all skill levels.
Quiet: last activity Feb 2026Free
Adjacent communities
Seattle Data, AI & Security
Bellevue City Hall, 450 110th Ave NE, Bellevue · Metro area
Roughly monthly evening talks at Bellevue City Hall, plus online events and hackathons
Adjacent: a mixed data science, AI and security group, not security-focused. Many speakers come from large technology companies. Its most recent events were online: the AI Defense Lab 2026 competition, which began September 24, 2026 and ended with a live finale on October 3, 2026.
Free
Directory checklist
12 of 19 national directories list a local chapter
| Directory | Result |
|---|---|
| 2600 Meetings | Local chapter: Seattle 2600 |
| CISA Regional Offices | Nearest: CISA Region 10 office (Seattle); no public events posted |
| Cloud Security Alliance | Local chapter: Cloud Security Alliance Seattle Chapter |
| Cyversity (formerly ICMCP) Chapters | Nearest: Cyversity Seattle Chapter (listed by Cyversity; no dated local events found) |
| DEF CON Groups | Local chapter: DCG Tacoma (DC253) |
| HTCIA | No chapter found |
| IAPP KnowledgeNet | Nearest: IAPP KnowledgeNet Seattle (members only; no past meeting dates published) |
| InfraGard Members Alliances | Local chapter: Washington State InfraGard Chapter |
| ISACA | Local chapter: ISACA Puget Sound Chapter |
| ISC2 | Local chapter: ISC2 Seattle Chapter |
| ISSA | Local chapter: ISSA Puget Sound Chapter |
| NSA National Centers of Academic Excellence in Cybersecurity (NCAE-C) | Local chapter: Batman's Kitchen (University of Washington CTF team) |
| OWASP | Local chapter: OWASP Seattle |
| SANS Institute | Nearest: SANS Seattle 2027 (March 15 to 20, 2027, Grand Hyatt Seattle; listed under events) |
| SecureWorld | Local chapter: SecureWorld Seattle |
| Security BSides | Local chapter: BSides Seattle |
| TOOOL (The Open Organisation Of Lockpickers) | No chapter found |
| WiCyS (Women in CyberSecurity) Professional Affiliates | Local chapter: WiCyS Western Washington Affiliate |
| Women's Society of Cyberjutsu (WSC) Chapters | No chapter found |
Dormant groups
2 groups with no public activity for 18 months or more
- CSNP Seattle CyberSecurity: last public activity Mar 2025 [S53]
- DC206: last public activity Feb 2020 [S54] [S55]
Field notes
- Seattle 2600 met at 3131 Western Ave from June to August 2026 and returned to 800 E Thomas St in September 2026. Its website and 2600.com name Gearhouse Coffee and its Meetup page names Base Camp; both give the same street address. The Meetup group description says 5:00 p.m., but the website, 2600.com and the Meetup events say 6:00 p.m. The older site wa2600.org still gives Cafe Allegro in the University District; use sea2600.net or the Meetup page.
- OWASP Seattle's regular meetings are on Zoom. Its Meetup page lists no in-person event after August 21, 2025.
- SeaSec East says it meets on the first Wednesday; its September 2, October 7 and November 4, 2026 meetings follow that. The Meetup group is now private and shows venues to members only.
- ISSA Rainier says it meets on the fourth Thursday of every other month, but its April 30 and October 29, 2026 meetings fell on the last (fifth) Thursday. Its October 29, 2026 meeting is a joint event with the ISACA Mt. Rainier chapter at the Washington State History Museum in Tacoma.
- ISSA Puget Sound lists no regular meeting after October 15, 2026; its December 4, 2026 holiday party is a ticketed social.
- Student clubs (Batman's Kitchen at UW Seattle, GrayHats at UW Bothell) meet during the academic year and are for enrolled students. Batman's Kitchen's public calendar shows nothing dated after May 30, 2026.
- Washington State InfraGard alternates members-only programs with occasional public meetings. Membership is free but requires FBI vetting.
- Several Eastside groups (SeaSec East, Black Lodge Research, Seattle Data, AI & Security) and most association chapters meet in Bellevue, Redmond, Kirkland or Mercer Island rather than in Seattle itself. The Tacoma groups (DC253, ISSA Rainier) are 30 to 45 miles south.
- The Official Cybersecurity Summit lists different admission prices on its registration page (USD 250) and on cybersecuritysummit.com (USD 350) for March 18, 2027.
Sources
Numbered references for the listings on this page.
- S1https://www.meetup.com/seasec-east/
- S2https://events.secureworld.io/details/seattle-wa-2026/
- S3https://events.secureworld.io/agenda/seattle-wa-2026/
- S4https://www.meetup.com/black-lodge-research/
- S5https://www.blacklodgeresearch.org/
- S6https://www.sea2600.net/
- S7https://www.meetup.com/seattle-2600/
- S8https://www.2600.com/meetings/
- S9https://owasp.org/www-chapter-seattle/
- S10https://www.meetup.com/owasp-seattle-chapter/
- S11https://www.meetup.com/seattledataaiandsecurity/events/316481475/
- S12https://events.govtech.com/Washington-Digital-Government-Summit
- S13https://www.meetup.com/symbol-crash-proper-hacker-training/
- S14https://seattlehackers.net/
- S15https://www.meetup.com/seattle-hackers-anonymous/
- S16https://www.meetup.com/seattle-lockpicking/
- S17https://www.seattlelocksport.com/
- S18https://f2fevents.com/event/sea26/
- S19https://f2fevents.com/register/?att=SEA
- S20https://isc2chapters.isc2.org/topics/49928/events/294882
- S21https://www.eventbrite.com/e/issa-puget-sound-presents-seattle-tuxedo-christmas-party-2026-tickets-2003743964136
- S22https://isc2chapters.isc2.org/topics/49928/events/305087
- S23https://www.bsidesseattle.com/
- S24https://events.humanitix.com/bsides-seattle-2027
- S25https://sessionize.com/bsides-seattle-2027/
- S26https://www.sans.org/cyber-security-training-events/seattle-2027
- S27https://cyberriskalliance.swoogo.com/seattle-bellevue-spring-2027
- S28https://cybersecuritysummit.com/summit/seattle-bellevue-3/
- S29https://futureconevents.com/events/seattle-wa-2027/
- S30https://futureconevents.com/faq/
- S31https://engage.isaca.org/pugetsoundchapter/home
- S32https://www.eventbrite.com/e/wiretapping-your-own-website-the-tech-behind-the-cipa-litigation-wave-tickets-2002062964220
- S33https://www.eventbrite.com/e/getting-to-yes-staying-at-yes-making-sound-decisions-about-ai-use-tickets-2003389317378
- S34https://www.linkedin.com/company/isaca-psc
- S35https://isc2chapters.isc2.org/topics/49928/page/overview-f583202c-fb20-4400-9559-326323fa3d64
- S36https://issa-ps.org/events/
- S37https://www.linkedin.com/company/issa-puget-sound
- S38https://www.issa-rainier.org/events
- S39https://dc253.org/
- S40https://forum.defcon.org/node/231692
- S41https://www.meetup.com/seattle-lockpicking/events/316472876/
- S42https://www.wicys.org/wicys-western-washington/
- S43https://www.linkedin.com/company/wicys-western-washington-affiliate-page
- S44https://wainfragard.org/
- S45https://www.linkedin.com/company/wainfragard
- S46https://www.batmans.kitchen/
- S47https://www.batmans.kitchen/meetings
- S48https://ctftime.org/event/3098/
- S49https://grayhats.club/
- S50https://events.secureworld.io/details/seattle-wa-2025/
- S51https://www.meetup.com/cloud-security-alliance-seattle-chapter/
- S52https://www.meetup.com/seattledataaiandsecurity/
- S53https://www.meetup.com/seattlesecurity/
- S54https://www.dc206.org/
- S55https://forum.defcon.org/node/231491