American Tower data breach
216,601 accounts exposed in a breach on 12 June 2026.
At a glance
216,601
Accounts exposed
12 June 2026
Date of the breach
26 June 2026
Added to the list
What happened
In June 2026, telecommunications tower infrastructure company American Tower was the target of a ShinyHunters "pay or leak" extortion campaign. The group subsequently published data allegedly taken from the company containing more than 200k unique email addresses belonging to employees, contractors, customers, and leads. Exposed data also included names, addresses, and phone numbers.
What was exposed
- Email addresses. Email addresses were exposed. Expect more spam and phishing aimed at those addresses.
- Job titles. Job titles were exposed. Scammers use them to aim a message at the right person.
- Names. Names were exposed. Scammers use real names to make a message look personal.
- Phone numbers. Phone numbers were exposed. Expect scam calls and text messages, some of them pretending to be the organisation.
- Physical addresses. Home or postal addresses were exposed. They can be used to make a scam letter or a fake identity look real.
What to do now
It depends on what was exposed, so these steps follow the list above.
If your contact details were exposed
- Expect more spam, scam calls and phishing. Do not click links or open attachments in messages you did not expect.
- If a message mentions this breach, do not reply. Go to the organisation's own website or app instead of using a link in the message.
Whatever was exposed
- Check which other breaches include your own email address and phone number.
- Keep an eye on your accounts for a few months. Breached data is often used long after the breach.
- If you think someone is using your details, report it to the organisation and to your national cyber crime reporting service.
Check your own exposure
- Password leak check: find out whether a password has appeared in a breach. The password never leaves your browser.
- Free domain security scan: grade the email, DNS and website security of a domain you own.
Related breaches
Other breaches that exposed some of the same kinds of data.
Crunchbase
In January 2026, the private company intelligence platform Crunchbase was targeted in a ShinyHunters "pay or leak" extortion attempt.
- Email addresses
- Employers
- Job titles
- Names
- +3 more
Read what happened
Sharecare
In August 2026, the digital health company Sharecare was the target of a ShinyHunters "pay or leak" extortion campaign.
- Dates of birth
- Email addresses
- Employers
- Genders
- +6 more
Read what happened
Neogen
In August 2026, the food and animal safety organisation Neogen was the target of a ShinyHunters "pay or leak" extortion attempt.
- Email addresses
- Employers
- Job titles
- Names
- +3 more
Read what happened