AMERICAN TOWER CORP /MA/

ent_019fa541eff3cf26fbc167323ec0bbbc

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Disclosures

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Incidents

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no linked incident in sample

Max affected reported

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no filed count in sample

Leak-site claims

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Identity resolution

Canonical name: AMERICAN TOWER CORP /MA/
Normalized: american tower corp ma— dedupe via name-norm; Microsoft / MSFT collapse to one row
GLEIF LEI: No match
SEC EDGAR CIK: 0001053507
Domain: None on record

Disclosure history (0)newest first

No disclosures linked to this entity yet.

Subsidiary disclosures (1)filed by group companies

◈ These filings were made by or about subsidiaries of AMERICAN TOWER CORP /MA/ — not by AMERICAN TOWER CORP /MA/ itself. Corporate relationships are mapped from GLEIF relationship records and SEC Exhibit 21 filings.

Tracked subsidiaries✦ AMERICAN TOWER CORPORATION

GLOBALLeak Sitevia AMERICAN TOWER CORPORATION2026-06-12
Over 5.2 million records consiting of a significant amount of customer and landowner PII, other records tied to other companies such as T-Mobile, Verizon, and the US DHS, several tower asset records containing GPS data and plaintext physical access/gate codes for cell tower compunds across the United States, thousands of internal corporate data, and a lot more were compromised. We urge you to reach out. This is a final warning to reach out by 15 June 2026 before we leak along with several annoying (digital) problems that'll come your way. Make the right decision, don't be the next headline. | Updated: 12 June 2026 | Warning: FINAL WARNING PAY OR LEAK