TeamPCP’s Telnyx Compromise: credential-based, steganographic backdoor in PyPI releases
On March 27, 2026 the Telnyx Python SDK on PyPI was backdoored by the actor known as TeamPCP using stolen maintainer credentials — not typosquatting. Malicious code landed only in telnyx/_client.py inside published releases 4.87.1 and 4.87.2 (no corresponding GitHub tags or releases), and the package’s ~700,000 monthly-download footprint made the trojanized SDK a high-value […]