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Trellix discloses a breach of its own source code repository — the cybersecurity firm’s internal systems were compromised

Trellix, the cybersecurity company trusted by thousands of enterprises and U.S. government agencies to stop hackers, has confirmed that an unauthorized party broke into a portion of its own source ...
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Trellix discovers attackers broke into its own source code — potentially exposing weaknesses in the security tools protecting thousands of companies

Trellix, the cybersecurity firm born from the 2022 merger of McAfee Enterprise and FireEye, confirmed in May 2026 that an unauthorized party accessed a portion of its internal source code repository.