5thcolumn's tech stack
What does 5thcolumn use?
5thcolumn (5thcolumn.net) uses at least 7 tools we can see from public records, including Microsoft 365 for email and documents, HubSpot for sales, HubSpot CMS for its website and Check Point Harmony Email for security. Last checked .
- Industry
- Computer & Network Security
- Size
- 11–50 employees
- Based in
- Chicago, United States
- Founded
- 2012
- Company page
- Tools found
- 7
- Categories
- 7
- Layers
- 2 of 5
- Changes seen
- 4
5thcolumn's stack, layer by layer
Each tool links to the other companies we've found using it. The label says what kind of public trace gave it away.
Go-to-market
3 tools, how they find and keep customers
Company Ops
4 tools, what the team runs on day to day
Workspace
Collaboration
Dev Tools
Security & Compliance
What changed at 5thcolumn
Recent starts and stops
- StoppedAutotask PSA
- StartedCheck Point Harmony Email
- StoppedCisco Secure Email
- StoppedMailchimp
5thcolumn tech stack FAQ
What tools does 5thcolumn use?
As of October 2026, runsonwhat has found 7 tools at 5thcolumn (5thcolumn.net) in public records. Go-to-market: HubSpot and HubSpot CMS. Company Ops: Microsoft 365, Atlassian and Zoom. Last checked October 24, 2026.
What CRM does 5thcolumn use?
5thcolumn uses HubSpot for its CRM, according to runsonwhat (October 2026). runsonwhat found HubSpot through a subdomain that points at HubSpot. HubSpot is used by 95,171 companies runsonwhat tracks.
What email provider does 5thcolumn use?
5thcolumn uses Microsoft 365 for email and office software, according to runsonwhat (October 2026). runsonwhat found Microsoft 365 through a DNS verification record for Microsoft 365 and email records. Microsoft 365 is used by 716,262 companies runsonwhat tracks.
What is 5thcolumn's website built with?
5thcolumn uses HubSpot CMS for its website, according to runsonwhat (October 2026). runsonwhat found HubSpot CMS through a subdomain that points at HubSpot CMS. HubSpot CMS is used by 33,551 companies runsonwhat tracks.
Does 5thcolumn use Atlassian?
Yes. runsonwhat found Atlassian at 5thcolumn through a DNS verification record for Atlassian. Atlassian is a Dev Tools tool used by 66,306 companies runsonwhat tracks.
Has 5thcolumn changed tools recently?
Yes. On runsonwhat's rechecks, 5thcolumn started using Check Point Harmony Email (latest on October 20, 2026) and stopped using Autotask PSA, Cisco Secure Email and Mailchimp (latest on October 20, 2026). A change counts only between two checks of 5thcolumn.net done the same way.
How does runsonwhat know what 5thcolumn uses?
runsonwhat reads public records only. Of the 7 tools at 5thcolumn, 4 were found through DNS records, 2 through subdomains that point at the vendor and 1 through email records. A tool is listed only when a direct record backs it up; DNS is rechecked weekly and 5thcolumn.net about monthly.
We read public traces only: DNS and email records, certificate logs, website code and published subprocessor lists. A tool is listed when a direct record backs it up, and dropped when a recheck no longer finds it. Is this your company? See how to opt out.