# What does 5thcolumn use?

5thcolumn (5thcolumn.net) shows public evidence of 7 tools, according to runsonwhat (last checked 2026-10-24).

- Industry: Computer & Network Security
- Size: 11–50 employees
- Based in: Chicago, United States
- Founded: 2012
- LinkedIn: https://www.linkedin.com/company/5thcolumn-llc

## Go-to-market

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [HubSpot](https://www.runsonwhat.com/reverse/hubspot) | Sales & CRM | Custom domain |  |
| [HubSpot CMS](https://www.runsonwhat.com/reverse/hubspot-cms) | Website & CMS | Custom domain |  |

## Company Ops

| Tool | Category | Evidence | Since |
|---|---|---|---|
| [Microsoft 365](https://www.runsonwhat.com/reverse/microsoft-365) | Workspace | DNS verification records, Email records |  |
| [Atlassian](https://www.runsonwhat.com/reverse/atlassian) | Dev Tools | DNS verification records |  |
| [Zoom](https://www.runsonwhat.com/reverse/zoom) | Collaboration | DNS verification records |  |
| [Check Point Harmony Email](https://www.runsonwhat.com/reverse/avanan) | Security & Compliance | Email records |  |

## Recent changes at 5thcolumn

- 2026-10-20: stopped using [Autotask PSA](https://www.runsonwhat.com/reverse/autotask)
- 2026-10-20: started using [Check Point Harmony Email](https://www.runsonwhat.com/reverse/avanan)
- 2026-10-20: stopped using [Cisco Secure Email](https://www.runsonwhat.com/reverse/cisco-email)
- 2026-10-20: stopped using [Mailchimp](https://www.runsonwhat.com/reverse/mailchimp)

## 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 95,203 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 715,935 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 33,536 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 66,031 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.


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Source: runsonwhat, https://www.runsonwhat.com/company/5thcolumn.net (updated October 2026). Counts are companies with direct public evidence of the tool (DNS records, certificates, website code, a real-browser crawl, subprocessor lists), so they are lower bounds. Methodology: https://www.runsonwhat.com/methodology.