CTT data breach: 468K accounts exposed
Severity: medium · Patch status: no-fix-needed · Since 2026-05-19
In April 2026, data allegedly obtained from CTT, Portugal's national postal service, was posted to a public hacking forum. The data included 468k unique email addresses along with names, phone numbers and parcel tracking numbers which can be used to retrieve the tracking history of the parcel. Exposed data: email addresses, names, phone numbers. The breach dates from Apr 26, 2026; Have I Been Pwned loaded it on May 19, 2026.
What to do
- If you had a CTT account, change its password and the password of any other account that reused it.
- Turn on multi-factor authentication wherever it is offered.
- Check whether your addresses are in this breach at https://haveibeenpwned.com.
- Expect targeted phishing that quotes the leaked details; verify any unexpected contact out of band.
Sources
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