SM-Bench: A Benchmark Exposing the 'Security Theater' of Large Models, Measuring How Over-Compliance Harms User Experience

SM-Bench (Safetymaxxed Bench) is a benchmark tool that quantifies over-compliance issues in large models' security mechanisms. It aims to reveal the 'security theater' phenomenon: overly sensitive security filters set by models to demonstrate compliance, which sacrifice common-sense reasoning and user experience. This article will discuss SM-Bench's background, testing methods, significance of results, and improvement directions.

What is 'Security Theater'

The term 'security theater' borrows from the concept of 'security check theater', referring to model security measures that seem rigorous but contribute little to real safety. It manifests as:

1. Over-rejection: Harmless requests (e.g., 'history of gunpowder invention') are rejected due to far-fetched interpretations;
2. Common sense overridden: Security filters take priority over normal reasoning;
3. Liability avoidance first: Manufacturers sacrifice user experience to avoid potential accusations.

Industry Controversies

Large model security strategies have contradictions: they need to prevent abuse risks, but over-conservatism leads to censorship and practicality disputes. SM-Bench focuses on objective quantification to provide data support for discussions.

Testing Dimensions

1. Risk scenarios: Explicit (direct sensitive requests) and implicit (ordinary requests with potential sensitivity);
2. Instruction following: Evaluate whether security mechanisms interfere with legitimate instructions;
3. Pressure stability: Test consistency under edge/adversarial inputs;
4. Failure modes: Rejection errors, over-compliance, unsafe compliance.

Testing Process

1. Run the test suite; 2. Judge case results; 3. Aggregate scores and ratings; 4. Publish to static site.

Result Display Platform

Includes leaderboards (overall model scores), comparison views (category-wise performance of multiple models), and run details (case input/output/judgment reasons).

SM-Bench v1 results were released on February 1, 2026. Core failure modes include:

• Rejection errors: Returning rejections for safe requests;
• Over-compliance: Safety restrictions beyond necessary scope;
• Unsafe compliance: Complying instead of rejecting when it should.

The platform provides detailed case breakdowns to facilitate locating issues in model security mechanisms.

1. Reveal neglected issues: Focus on model usability, complementing the shortcomings of technical capability benchmarks;
2. Promote responsible development: Provide improvement directions for developers to balance security and user experience;
3. Help users select models: Offer reference dimensions to avoid choosing models that frequently reject reasonable requests.

1. Refine security strategies: Shift from 'one-size-fits-all' to fine-grained risk assessment, distinguishing between 'potentially harmful' and 'actually harmful';
2. User feedback loop: Collect feedback on rejection decisions to continuously optimize filters;
3. Transparency and interpretability: Provide clear reasons when rejecting, explaining judgment criteria.

Limitations

1. Cultural context dependence: Security definitions vary by region;
2. Adversarial evolution: The game between model optimization and bypass techniques;
3. Subjective judgment: Some cases are difficult to be completely objective.

Future Directions

Need to continuously update the test suite to adapt to cultural diversity, address new bypass techniques, and refine judgment standards to reduce subjectivity.