Si1isec – the Silicon Valley Information Security gathering

Si1isec logo

Due to the pandemic & social unrest, all si1isec gatherings are canceled TFN. Stay safe out there!

Till then, here are the details for when we can have gatherings safely again. Follow the @si1isec twitter account for updates.

What & Why:

Si1isec is one of the many CitySec gatherings around the world, One of the many unaffiliated collection of informal meetups for like-minded information security professionals. These gatherings are for meeting up and discussing topics of interest in a non-work, non-vendor setting; preferably while enjoying food and beverages (sometimes even adult beverages).


Fellow information security professionals and hackers


Before the pandemic, Si1isec would typically gather on the first Thursday of the month, starting around 7 PM (though some show up earlier, and some later). Note that due to other large gatherings in other cities during the first week of a month (e.g, 'hacker summer camp' (DEFCON/Black Hat) or RSA Conference) most of us will not be in attendance. When these events align with Si1isec, typically alternate plans holding the gathering on another evening & are announced via social media and during prior gatherings.

2020 Schedule:

The rest of 2020 canceled due to COVID pandemic "Shelter at Home" directive

2021 Schedule:


Previous dates:


January 5
February 2
March 2
April 6
May 4
June 1
July 6
August 3
September 7
October 5
November 2
December 7


January 4
February 1
March 1
April 5
May 3
June 7
July 5
August 2
September 6
October 4
November 1
December 6


January 3
February 7
March 7
April 4
May 2
June 6
July 18 (Moved from the usual 1st Thursday which was Independence Day)
August 1
September 5
October 3
November 7
December 5


January 2
February 6
March 5


We were having our Si1isec gatherings at:

Metro City Restaurant & Bar
151 S Murphy Ave
Sunnyvale, CA 94086

Currently we meet at Metro City Restaurant & Bar; at the tables on the sidewalk in front of the venue on Murphy street. Look for the folks with the blinking badges and other electronics.
Note that if the venue is unable to accommodate us (which happens due to sports ball games or wait staff shortages), we will move to other venues on Murphy Street (such as Hardy's Bavaria).
At some point we may head to other venues on Murphy street for other food/libations. Follow the @si1isec Twitter account for details.


There is street parking on Murphy, and multiple parking lots nearby. Note the Caltrain parking garage located at the north end of Murphy Street is free after 6 PM and most likely your easiest parking option.

Getting there:

Caltrain: Sunnyvale station, with many of the limited and baby bullets stoping at the Sunnyvale station
Driving: easy access from both Central Expressway and 101 for their respective Mathilda exits, head towards Sunnyvale Town Center and the Sunnyvale heritage district, with the venue on the east end of Murphy Street.
Directions via Mapquest
Directions via Google Maps

Other local SF Bay Area CitySec gatherings:

BaySec may no longer have the mailing list, but they now have a new web site and  you can also check out the #BaySec hashtag on Twitter.
BaySec happens on the third (3rd) Tuesday of the month at 7 PM at:
Patriot House
2 Embarcadero Ctr, Level P
San Francisco, CA 94111

  • HoodSec - @hoodsec and
  • HoodSec occurs the last Thursday of every month at
    Radio Bar
    435 13th St, Oakland, CA 94612

  • Other information security/hacker events and organizations in Silicon Valley that many Si1isec attendees also attend:

    Electronics Flea Market (EFM)

    ISC2 Silicon Valley Chapter

    ISSA Silicon Valley

    ISACA Silicon Valley chapter

    Pacificon - the ARRL Pacific Division Annual Conference (Ham radio)

    SF2600 with the SF2600 mailing list on Google Groups sf2600 [AT]

    Social media:



    si1isec at si1isec dot org