The lawsuit contends that an Evolv weapons detector failed to spot the large knife that the victim's assailant used. "We are investigating whether Evolv may have deceived investors about the capabilities and effectiveness of Evolv's technology," said Reed Kathrein, the Hagens Berman partner leading the firm's investigation. If you invested in Evolv Technologies and have substantial losses, or have knowledge that may assist the firm's investigation, contact Hagens Berman now » If you'd like more information and answers to frequently asked questions about the Evolv Technologies investigation, read more » Whistleblowers: Persons with non-public information regarding Evolv Technologies should consider their options to help in the investigation or take advantage of the SEC Whistleblower program. Under the new program, whistleblowers who provide original information may receive rewards totaling up to 30 percent of any successful recovery made by the SEC.