generated: '2026-07-25'
method: searched
probe: true
source: https://www.teliacompany.com/assets/u5c1v3pt22v8/3hKQp1pJJJZ4EpquWVZ9rk/17d86f87acc6cf544b38f1a70ce2f069/Supplier_Security_Directive_8.0_2024-09-11.pdf
notes: >-
  Telia Company publishes a vulnerability reporting channel, but not where a
  developer would look for one. There is no /.well-known/security.txt on any
  Telia host and no responsible-disclosure page on the corporate site. The
  verified contact is published inside the public Supplier Security Directive
  (v8.0, 2024-09-11), which instructs reporters to notify cert@teliacompany.com
  about zero-day and other material vulnerabilities within 24 hours of
  identification, and controlcenterem-security@teliacompany.com for personal-data
  breaches. A HackerOne handle for TeliaSonera AB also resolves (HTTP 200), but
  its policy content could not be read anonymously, so it is recorded as
  unverified rather than claimed.
  CORRECTION - an automated probe of
  https://www.teliacompany.com/security/responsible-disclosure initially scored a
  hit; that URL is a SOFT 404. www.teliacompany.com returns HTTP 200 with a
  slug-derived title and description for any path (verified against a nonsense
  URL), so the "responsible disclosure" keyword match came from the auto-generated
  title, not from a real policy page. That false positive has been removed.
contact:
- cert@teliacompany.com
- controlcenterem-security@teliacompany.com
policy: []
security_txt: false
bug_bounty:
  program: null
  verified: false
  candidate: https://hackerone.com/teliasoneraab
  candidate_note: resolves HTTP 200 as "TeliaSonera | Vulnerability Disclosure
    Policy"; program scope and status could not be read without a HackerOne
    session, so no claim is made about whether it is live or in scope for the API
    estate
disclosure_window: >-
  Suppliers must inform Telia at cert@teliacompany.com about any zero-day or
  other vulnerability with material impact on a deliverable as soon as possible
  and no later than 24 hours after identification.
evidence:
- source: https://www.teliacompany.com/assets/u5c1v3pt22v8/3hKQp1pJJJZ4EpquWVZ9rk/17d86f87acc6cf544b38f1a70ce2f069/Supplier_Security_Directive_8.0_2024-09-11.pdf
  kind: published security directive (PDF, first-party, public)
  quote: The Supplier shall inform the Buyer at cert@teliacompany.com about any
    zero-day vulnerabilities and other vulnerabilities which may have a material
    impact on the Deliverable as soon as possible but no later than 24 hours.
  http_status: 200
- source: https://www.teliacompany.com/en/solutions/global/security-advisory
  kind: security advisory page (JavaScript application, content not readable
    anonymously)
  http_status: 200
probed_and_absent:
- /.well-known/security.txt on tunnistus.telia.fi (404)
- /.well-known/security.txt on api-garden.teliacompany.com (404)
- /.well-known/security.txt on lso / camara / developer.telia.fi / api.messaging
  (SPA soft 200, not a document)
- https://www.teliacompany.com/security/responsible-disclosure (soft 404)