Illustration: NoName057(16) Claims Theft of 25,000 Accounts at La Poste Mobile
La Poste Mobile · Breach

NoName057(16) Claims Theft of 25,000 Accounts at La Poste Mobile

· 1 min read

The pro-Russian hacktivist group NoName057(16) claims it hacked French mobile operator La Poste Mobile and stole data on about 25,000 accounts, including names, email addresses, phone numbers and postal addresses. Posted on October 21, 2026, the claim came with no file, sample or other proof, and La Poste Mobile has not confirmed any breach; earlier the same day the group claimed a DDoS attack on the operator's websites and SIM activation service. Treat the claim as unverified; if real, customers could face targeted phishing and SIM-swap attempts.

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In this article
  1. What happened
  2. Why it matters
  3. What to do
  4. For the technical team
  5. Timeline
  6. Sources

What happened

The pro-Russian hacktivist group NoName057(16) says it hacked French mobile operator La Poste Mobile and stole data on about 25,000 user accounts: names, email addresses, phone numbers and postal addresses. No proof was shared and the operator has not confirmed any breach. Earlier the same day, the group claimed a DDoS attack on the operator's websites and SIM activation service.

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Why it matters

If confirmed, the leak exposes customer contact data at a mobile operator, fueling targeted phishing and SIM-swap attempts. So far there is no evidence the intrusion happened.

What to do

Wait for an official statement from La Poste Mobile and monitor verification channels. Companies with lines at the operator should warn users about possible phishing attempts by email, phone and SMS.

For the technical team

Affected
La Poste Mobile, operadora de celular francesa; alegado roubo de cerca de 25 mil contas de usuários (nomes, e-mails, tel · La Poste Mobile, French mobile operator; about 25,000 user accounts, per the group's claim
Exploitation
Unverified claim posted by the group on October 21, 2026 and reported by DailyDarkWeb. No file, sample or other proof was shared. La Poste Mobile has not confirmed any breach. Earlier the same day, the group claimed a DDoS attack on the operator's websites and SIM activation service.
Fix
No software to update
More details
According to DailyDarkWeb, NoName057(16) is known mainly for DDoS attacks and data-theft claims from the group are unusual, calling for extra caution. The group says it warned the affected users, the operator and the French government. Source assessment: unverified threat-actor claim; if real, customers could face targeted phishing and SIM-swap attempts.

Timeline

  1. NoName057(16) claimed theft of about 25,000 La Poste Mobile accounts, without presenting proof.

Sources 1 source

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