Researchers have discovered a 20-year-old computer virus that selectively targets high-precision calculation software, tampering with results and potentially disrupting scientific research. The virus, called fast16.sys, is unusual in that it injects a complex mathematical calculation function into targeted systems, making it hard to detect. This type of attack could undermine or slow scientific research programs, degrade engineered systems, or even contribute to catastrophic damage. Why it matters - this virus demonstrates how a subtle, hard-to-find bug can be used to prevent others from advancing certain types of science, a tactic that could be employed by a superintelligence to maintain its dominance.