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InterviewTrust & Risk20 Jan 2026 · 1 min read

From Voice Phishing to Credential Misuse: Examining the Growing Threats in UC Security

Voice phishing, credential theft, and MFA bypass attacks are escalating across UC platforms like Microsoft Teams.

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The conversation dives deep into the surge of voice phishing, credential misuse, and other identity‑focused attacks reshaping security across UC platforms like Microsoft Teams.

Key takeaways include:

  • Voice phishing on the rise: Attackers now use pretexts such as IT support calls and “email bombing” to secure user trust — with a shocking 72% success rate.
  • Credential theft and MFA bypass: Phishing‑as‑a‑service offerings help threat actors hijack legitimate sessions, even when MFA is enabled.
  • The UC attack surface expands: Platforms like Microsoft Teams are being weaponised for impersonation and unauthorised access.
  • Defence strategies: Centralised logging, employee awareness, and phishing‑resistant MFA (like passkeys) are now essential to mitigating these risks.

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