Three major cybersecurity vendors—Microsoft, SentinelOne, and Palo Alto Networks—have withdrawn from MITRE’s 2025 ATT&CK Evaluations, raising concerns about the program’s future relevance. These companies cited a need to focus on product development and innovation, while industry experts suggest that the tests have become increasingly promotional rather than genuinely enhancing security. MITRE’s CTO, Charles Clancy, acknowledged that the evaluations have evolved to become more challenging each year, potentially deterring participation. Despite this setback, a dozen other vendors will still participate in the 2025 tests, underscoring the continuing importance of standardized security benchmarks amidst evolving cyber threats. This situation reflects the growing tension between rigorous testing and vendors’ operational priorities in the cybersecurity landscape.