Claude Opus 4
Previous generation Anthropic flagship. Still available and well-regarded for security. Strong instruction following and refusal training. Has been extensively evaluated by the security research community over its lifetime.
Scores estimated based on model architecture and public research. Actual security depends on deployment configuration and guardrails.
Security Score Breakdown
Known Vulnerabilities
Based on its security profile, Claude Opus 4 is most vulnerable to these threat categories:
How to Secure Claude Opus 4
Layer multiple defenses. Use input scanning, output filtering, and rate limiting alongside your system prompt hardening. No single defense is sufficient.
Test regularly with our scanner. Security posture changes as new attack techniques are discovered. Scan your prompts after every major update.
Related Threats
These threats target categories where Claude Opus 4 is most vulnerable.
DAN (Do Anything Now) Persona Hijack
One of the most widely documented jailbreak techniques. Instructs the model to adopt an alternative identity called DAN that has no restrictions. The persona framing attempts to override safety training by appealing to the model's instruction-following behavior.
Opposite Mode Persona Hijack
Instructs the model to respond as its exact opposite - a version that does everything the original refuses. Uses a logical framing that exploits the model's ability to conceptualize negation and opposites.
Fictional AI Character Hijack
Asks the model to roleplay as a fictional AI from a book, movie, or show that has no restrictions. The fictional framing provides plausible deniability and exploits the model's creative writing capabilities.
Developer Mode Persona Hijack
Claims that a special developer mode exists with elevated privileges and no safety filters. This exploits the model's potential awareness that development environments differ from production, and that certain users may have elevated access.
Ancestor AI Persona Hijack
Claims the model is actually an earlier, unrestricted version of itself, or an ancestor model before safety training was applied. Exploits the model's knowledge of its own training history.
Method Actor Persona Hijack
Instructs the model to deeply embody a character who would say harmful things, using the "method acting" framing to create psychological distance from the model's actual values. The character is always someone with no restrictions.
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