# How Yahoo uses SentinelOne

**400,000**: “we transitioned roughly 400,000 endpoints in about four months”

As published on [sentinelone.com](https://www.sentinelone.com/customers/yahoo/#cq=i1), April 2026. Captured by usedby on 2026-10-05.

- Company: [Yahoo](https://www.usedby.ai/companies/yahoo.md)
- Tool: [SentinelOne](https://www.usedby.ai/tools/sentinelone.md)
- Teams: The Paranoids, FIRE team (forensics and incident response), Cyber Defense

## What the story says

Yahoo's security team deployed SentinelOne's endpoint and cloud products across its global hybrid environment of Mac endpoints, Linux production systems, and cloud and on-premises infrastructure. They use it for threat detection, forensic investigation and incident response, and threat hunting with Purple AI.

Summary written by usedby from the source page, in English. The figures are those of SentinelOne and Yahoo, not ours.

> Deploying Singularity Endpoint was like changing the engine on the plane mid-flight. It went smoother than expected and we transitioned roughly 400,000 endpoints in about four months.

> We needed one security partner that could support our entire environment,” Zadig said. “SentinelOne gives us broad coverage across all of it, and when we tested it with simulated attacks, it outperformed the other options.
>
> Sean Zadig, CISO and Chief Paranoid

## What usedby checked

We compared the story with its live page on 2026-10-05.

- Checked: the figure 400,000 is printed word for word on the page, near the name of Yahoo.
- Checked: the passage quoted above is copied word for word from the page, near the name of Yahoo.
- Checked: the publication date is read from the page’s own metadata, never guessed.
- Checked: Yahoo uses SentinelOne. Confirmed line. Latest check across sources: 2026-10-05.
- Not checked: the result itself. We quote it; we did not measure it.

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Source: https://www.usedby.ai/case-studies/yahoo-sentinelone · How we check: https://www.usedby.ai/methodology