Canonical Definition
Runtime Immunity structurally nullifies attack outcomes even when attacks succeed.
What "Structural Nullification" Means
Runtime Immunity structurally severs the causal relationship that traditional security has assumed: "breach of defense = occurrence of damage." Even when an attack reaches the system, the outcomes hold no exploitable value.
Structural nullification does not depend on detection, addresses unknown threats (including 0-day), and does not require human response.
The goal is "structurally infeasible," not "100% impossible." This definition focuses on structural minimization and computational infeasibility.
Two Design Principles of Runtime Immunity
Detection Independence
Effectiveness does not depend on detection success. Outcomes are nullified even with detection gaps.
Structural Embedding
Protection is embedded into system architecture at design time, not applied through runtime judgment.
Three Realization Forms
Attackers cannot identify or locate the target. The attack surface is structurally absent or unresolvable.
Tools and conditions required for the attack to proceed are structurally absent.
Obtained outcomes hold no exploitable value. Exfiltrated data is worthless; stolen credentials are non-transferable.
Nullification Level (NL)
Partial information-theoretic nullification (≥50%).
Comprehensive information-theoretic nullification (≥95%).
Practical nullification (attacker ROI < 0), built on NL-2.
NL levels are cumulative: NL-1 ⊂ NL-2 ⊂ NL-3.
Full Formal Definition
Runtime Immunity: A technical system that, even when an attack reaches the system, structurally nullifies the preconditions or outcomes of the attack, maintaining Protection Attributes without halting the system.
Formal Publication
Runtime Stability Framework v3.3 — Superasystem Inc., 2026
@techreport{superasystem2026runtime,
title = {Runtime Stability: A 7-Attribute Framework
for Structural Runtime Protection of
Computer Systems},
year = {2026},
institution = {Superasystem Inc.},
doi = {10.5281/zenodo.18919673},
url = {https://doi.org/10.5281/zenodo.18919673}
}