FTC v. Evolv: the AI scanner marketed as detecting all weapons missed a knife used in a school stabbing, and a federal court entered a permanent injunction

The problem

Evolv Technologies sells the flagship product of AI-era physical security: the Evolv Express walk-through scanner, marketed as using artificial intelligence to spot concealed weapons in a moving crowd without the emptying-of-pockets ritual of a metal detector. The pitch worked. Per the FTC’s complaint, Express scanners stood in over 800 schools across 40 states, and school systems made up half of Evolv’s business (source). The Federal Trade Commission alleged the pitch outran the product.

What the FTC alleged (Evolv settled without admitting wrongdoing)

In its November 2024 complaint, the FTC said Evolv “misrepresented that its Evolv Express system will detect all weapons; ignore harmless personal items without requiring people to remove them from their pockets or bags; detect weapons more accurately and faster than metal detectors; reduce false alarm rates; and cut labor costs by 70% compared to metal detectors by reducing the need for additional personnel” (source).

The complaint’s starkest example is a school. Per the FTC, Evolv’s “Express scanners reportedly failed to detect a seven-inch knife brought into a school in October 2022 that was used to stab a student. Afterwards, school officials increased the system’s sensitivity settings, prompting a 50% false alarm rate”, the scanners flagging laptops, binders, and water bottles while the marketing promised those would be ignored (source). “The FTC has been clear that claims about technology, including artificial intelligence, need to be backed up, and that is especially important when these claims involve the safety of children,” said Samuel Levine, Director of the FTC’s Bureau of Consumer Protection (source). These are allegations; Evolv settled without admitting wrongdoing.

The outcome

The Commission voted 5-0 to file the complaint and stipulated order in the U.S. District Court for the District of Massachusetts (source). On 5 December 2024, Magistrate Judge Paul G. Levenson entered the Stipulated Order for Permanent Injunction (Case No. 1:24-cv-12940), “SO ORDERED this 5th day of December, 2024” (source). The order permanently enjoins Evolv from making any unsubstantiated representation about weapons detection, ignoring harmless items, accuracy, false-alarm rates, screening speed, labor costs, testing, or “any material aspect of its performance, efficacy, nature, or central characteristics, including, but not limited to, the use of algorithms, artificial intelligence, or other automated systems or tools” (source).

The remedy with teeth is contractual. The order requires Evolv to notify K-12 schools and districts that bought or contracted for Evolv Express between April 1, 2022 and June 30, 2023 of their “right to cancel their contracts within 60 days of receipt of the Notice”, by email within seven days of entry in court-prescribed wording (source).

There is no monetary relief. Evolv’s own investor statement says the company “disagrees with the FTC’s allegations, and has not admitted any wrongdoing”, and puts the exposure at approximately 237 Express units, “approximately 4% of the Company’s total installed base of 5,323 Evolv Express units as of June 30, 2024”, roughly $3.9 million of Annual Recurring Revenue, and “approximately 8% of the Company’s total customers” (source). These are Evolv’s own figures, a party stating its own exposure, and are labeled as such below.

Why this matters for buyers

This is a verified negative from the strongest posture in the honest-negative class: not an agency consent docket but a federal-court permanent injunction. Its lesson is the founding thesis of this site: an AI capability claim is worth exactly the evidence behind it. Evolv’s marketing claims about detecting “all weapons” ran for years across 800+ schools before a regulator forced the gap into the public record, and the court’s remedy was to let the customers who bought on those claims walk away. Buyer diligence that demands substantiation per claim, accuracy, false-alarm rate, labor cost, each with a method and a measurement, is precisely what the injunction now compels from the vendor.

Related case files

• FTC v. accessiBe: the same FTC playbook against an unsubstantiated AI capability claim, here that an AI widget made any website accessible, but with $1M of monetary relief where Evolv paid none. The contrast is the remedy, not the pattern.
• SEC AI-washing: Presto Automation: another marketed-AI-that-outran-the-product case, a drive-thru voice AI leaning on human agents, adjudicated by a regulator rather than the market.
• FTC v. DoNotPay: the “AI robot lawyer” overclaim, the same rule that a technology claim needs evidence, applied to a very different AI product.

How this was verified

This case carries a green badge under TIN’s standard as an accurate, in-context account of a federal-court action; green certifies the reporting, not the vendor. Every figure above originates in the FTC’s filed complaint and press release, the court-entered stipulated order (Docket 19), or Evolv’s own investor-relations statement. Each source was fetched live and matched to archived captures, with the three PDFs byte-identical to their Wayback copies by SHA-1/CDX digest. On 2026-08-15 the press release, the court-entered order, and the Evolv IR release were re-fetched live and every figure re-confirmed. Allegations are attributed to the FTC; Evolv’s no-admission posture and its own counter-figures are on record and labeled Tier 1 as a party’s own statement, distinct from the regulator’s and the court’s record.

Sources

Checked live 2026-08-15. Tier 1 = regulator’s own record, court document, or a party stating its own metric on the record.

1. Federal Trade Commission, “FTC Takes Action Against Evolv Technologies for Deceiving Users About Its AI-Powered Security Screening Products,” 2024-11-26 (Tier 1, the regulator’s own statement of its complaint and settlement). https://www.ftc.gov/news-events/news/press-releases/2024/11/ftc-takes-action-against-evolv-technologies-deceiving-users-about-its-ai-powered-security-screening
2. U.S. District Court, D. Mass., “Stipulated Order for Permanent Injunction and Other Relief,” FTC v. Evolv Technologies Holdings, Inc., No. 1:24-cv-12940, Docket 19, entered 2024-12-05 by Magistrate Judge Paul G. Levenson (Tier 1, court-entered order). https://www.ftc.gov/system/files/ftc_gov/pdf/19ORDERenteredgranting2MOTIONforSettlementTOAPPROVEPROPOSEDSTIPULATEDORDER.pdf
3. Evolv Technologies Holdings, Inc., investor relations, “Evolv Announces Resolution of FTC Inquiry,” 2024 (Tier 1 for Evolv’s own exposure figures, a party stating its own metric; also carries Evolv’s no-admission posture). https://ir.evolvtechnology.com/news/press-releases/detail/216/evolv-announces-resolution-of-ftc-inquiry