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
meetup.com/black-lodge-research [S3] [S4]
DCG Tacoma (DC253)
Devil's Reef, Tacoma (21+); lockpicking nights at The Church Cantina, 5240 S Tacoma Way, Tacoma · In the city
Last Friday of each month at Devil's Reef (21+); second-Tuesday lockpicking night at The Church Cantina, 6:00 p.m.
Local DEF CON group. The group's site says to join its Discord and that Devil's Reef is 21+, with under-21 members using Discord. The site's Friday rule carries no date, so the most recent dated activity is the September 8, 2026 lockpicking night at The Church Cantina, hosted through the Seattle Lockpicking and Locksport Meetup group.
Free
dc253.org [S38] [S39] [S40]
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. Venues include restaurants, food courts and Black Lodge Research.
Free
meetup.com/seasec-east [S13]
Seattle 2600
800 E Thomas St, Seattle · Metro area
First Friday of every month, 6:00 p.m. to 8:00 p.m.
Part of the worldwide 2600 Magazine meeting network. The website names Gearhouse Coffee; the Meetup page names Base Camp at the same address, 800 E Thomas St Ste A.
Free
sea2600.net [S15] [S16] [S17]
Seattle Hackers Anonymous (SHA)
Pine Box, 1600 Melrose Ave, Seattle · Metro area
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 its first meeting on August 25, 2026. Its website header reads "Seattle Hackers Association"; the text and Meetup page use Seattle Hackers Anonymous.
Free
seattlehackers.net [S8] [S9]
Seattle Lockpicking and Locksport
Fremont Brewing Urban Beer Garden, 1050 N 34th St, Seattle; also The Church Cantina, Tacoma, and Bellevue or Redmond · Metro area
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. in Redmond or Bellevue.
Not a TOOOL chapter. The Tacoma night is run with DC253 and falls on the second Tuesday (next: October 13, 2026). Bring picks and locks or borrow the group's; walk-ups welcome. The recurrence shown is the Seattle meeting only. The Eastside meeting moved from Redmond to Bellevue Brewing in September 2026 while the Redmond venue was closed.
Free
meetup.com/seattle-lockpicking [S11] [S12]
Symbol Crash: Hardware Hacking Hands-On Workshop
Seattle Makers, 3012 16th Ave W, Seattle · Metro area
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.
Free
meetup.com/symbol-crash-proper-hacker-training [S7]