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Response snapshot Oct 26, 2026, 22:09 UTC

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Disclosed incidenthibp-cushmanwakefield

Cushman & Wakefield breach: 310,431 accounts exposed

In May 2026, the real estate services firm Cushman & Wakefield was the target of a "pay or leak" extortion campaign by the ShinyHunters group .

At a glance

Sources
1 source

What to do

If you or your organization used this service, change reused passwords, watch for phishing that uses the exposed data, and check the disclosure for the organization's guidance.

Read Have I Been Pwned: Cushman & Wakefield (opens a new tab)

What happened

In May 2026, the real estate services firm Cushman & Wakefield was the target of a "pay or leak" extortion campaign by the ShinyHunters group . Following the threat, the group publicly published data they alleged had been obtained from the firm, consisting mostly of C&W email addresses along with tens of thousands of external email addresses and corporate contact records.

The exposed data was primarily business information, including names, job titles, company addresses and phone numbers.

Related technology

Sources

  1. Primary source

    Have I Been Pwned: Cushman & Wakefield (opens a new tab)

    Verified breach loaded into Have I Been Pwned: account count, exposed data types, and dates.

    Published Checked

  2. Primary source

    Have I Been Pwned breach API (opens a new tab)

    The breach list that supplied this entry.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, May 12). Cushman & Wakefield breach: 310,431 accounts exposed. https://kevwire.com/record/hibp-cushmanwakefield

MLA

"Cushman & Wakefield breach: 310,431 accounts exposed." KEVWire, 12 May 2026, kevwire.com/record/hibp-cushmanwakefield.

Chicago

KEVWire. "Cushman & Wakefield breach: 310,431 accounts exposed." Last modified May 12, 2026. https://kevwire.com/record/hibp-cushmanwakefield.

Evidence summary (plain text)

Cushman & Wakefield breach: 310,431 accounts exposed (May 12, 2026).
In May 2026, the real estate services firm Cushman & Wakefield was the target of a "pay or leak" extortion campaign by the ShinyHunters group . Following the threat, the group publicly published data they alleged had been obtained from the firm, consisting mostly of C&W email addresses along with tens of thousands of external email addresses and corporate contact records. The exposed data was primarily business information, including names, job titles, company addresses and phone numbers.
Sources:
Have I Been Pwned: Cushman & Wakefield: https://haveibeenpwned.com/Breach/CushmanWakefield
Have I Been Pwned breach API: https://haveibeenpwned.com/api/v3/breaches
Record ID: hibp-cushmanwakefield.
Record origin: Ingested record.
AI evidence: Not assessed.
About this data

This record was ingested from a data source. Retrieved: Oct 26, 2026, 21:25 UTC. Ingestion is not an independent editorial investigation.

Verified by Have I Been Pwned. Breach date: 2026-05-05; loaded 2026-05-12. Exposed data: Email addresses, Job titles, Names, Phone numbers, Physical addresses, Salutations. Counts are accounts in the loaded data, not necessarily distinct people.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

Record JSON

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Record details

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