Abnormal.ai Response to Anthropic Lawsuit

Anthropic filed a lawsuit against Abnormal AI on July 1, alleging unfair competition and trademark infringement. Abnormal CEO Evan Reiser responded, stating Anthropic never notified them, the logo was designed before Anthropic's founding, and Anthropic lacks a trademark covering cybersecurity. Reiser emphasized Abnormal does not rely on Anthropic's technology for its products.

Anthropic filed a lawsuit against us on July 1st, claiming unfair competition and trademark infringement. This was surprising and disappointing for a few reasons: They never told us: We’re a very large customer of Anthropic and they still have yet to tell us about the lawsuit. I learned about it from a reporter, not our “partner.” They do NOT own the trademark : They argue our “/\\” logo is confusingly similar to their “A\” yet they don’t have a registered trademark that gives them a monopoly over every AI -adjacent A/ design in cybersecurity. They say we stole their brand: Our company was started 3 years before Anthropic. The logo we use today was designed in April 2021, just months after Anthropic was founded. They say we deceived customers: No customer has ever purchased thinking we were Anthropic. Our business is about trust: we help our customers stop deception crimes phishing, fraud, social engineering . Their demands are shocking : The lawsuit asks for “ disgorgement of all revenues, earnings, profits, compensation, and benefits.” This doesn't feel Anthropic : We’re both supposed to be mission-oriented companies to act for the global good. There is nothing more important to me and Abnormal than trust, integrity, and intellectual honesty. So when there are false claims about our integrity, we must respond. I know that these things are best resolved in private. Unfortunately, this lawsuit was filed publicly without our knowledge. I need to respond publicly now, since customers, employees, and partners have started asking questions. For customers: nothing changes. The takeaway is: no security risk, no product change, and no change to the protection you receive from Abnormal. Abnormal protects more than 25% of the Fortune 500, tens of millions of people, and government organizations at the city, state, and federal level. Fighting cybercrime is a tough job; it's getting harder with AI-empowered attackers. This lawsuit should not be yet another thing to worry about. Anthropic builds general-purpose AI language models. Abnormal builds specialized behavioral AI models to understand enterprise behavior and stop cyber attacks. These are different technologies for different jobs. We do not rely on Anthropic, Claude, or any other third-party AI for autonomous threat detection and response. Abnormal does not rely on Claude for customer protection. Our autonomous threat detection and response is built on Abnormal’s own specialized behavioral AI for cybersecurity. Like many companies, we use a range of productivity and development tools internally, and Claude is one of them. But those tools are separate from the systems that detect and respond to attacks for customers. Our mission is to stop crime with AI, and protect our customers, people and critical infrastructure. And that work continues. We did not copy Anthropic’s brand or identity. I founded Abnormal AI in 2018, three years before Anthropic existed. I registered the domain abnormal.ai and we used it with early customers, employees, and investors. We hired ALINE https://www.aline.studio/project/abnormal in April 2021 to design our slash-based Abnormal brand identity, just months after Anthropic was founded and before Claude existed. The logo on our website today is the same wordmark, pixel-for-pixel, that we have used for ~5 years. The claim that Abnormal invented its identity in 2025 to copy Anthropic is simply wrong. Anthropic has no trademark covering use of “AI” for security. Trademarks prevent confusion in specific markets. Trademarks are not universal monopolies over letters, slashes, or the idea of “AI.” For example: An “Acme” bread company does not automatically infringe an “Acme” GPU company’s trademark. The domain and market matter. Public trademark records show Anthropic does not have a registered trademark covering the cybersecurity products Abnormal sells. Anthropic builds general-purpose AI models. Abnormal builds specialized behavioral AI security products. We do not believe Anthropic has trademark rights that prevent Abnormal from using its own A/ slash based identity for the cybersecurity products we sell. We did not deceive customers. This is the part of the lawsuit that bothers me most, because it questions our integrity. No customer has bought Abnormal because they thought we were Anthropic. Our customers are sophisticated enterprises and government agencies. They know exactly who we are, what we sell, what we protect, and how our technology works. Anthropic builds general-purpose AI models and productivity tools. Abnormal builds full-stack cybersecurity products using specialized behavioral AI to stop cyber attacks. We do not sell LLM access, and we do not compete by pretending to be Anthropic. This is about integrity. Abnormal was built by inventing, not copying. We built our own AI models, our own technology architecture, and our own behavioral approach for cybersecurity because the old way was failing customers. That is why the accusation that we copied another company to deceive customers is so personally offensive. It is the opposite of who we are. I have been a major Anthropic user and advocate: My personal Anthropic account will spend ~$1M this year Abnormal will be $10M . Abnormal has rolled out Claude to 100% of employees because we want our employees to learn how to work in the AI era. We’ve published 100+ free videos https://abnormal.ai/transform and resources because we want to educate, inspire, and help other companies become AI-native. That is what innovators do: they build, teach, share, and push the world forward. We will not accept a false story. Abnormal was not built by copying or confusion. It was built on trust, innovation, and commitment to ensure that our behaviors are aligned with our values and mission to stop crime. Abnormal focus on mission. Abnormal will remain focused on our mission to stop crime with AI. I want our customers and employees and partners to stay focused on that mission. The AI era of cybersecurity requires focus and collaboration not distraction and confrontation. I have deep admiration for what Anthropic has built. My hope is that we find a way to resolve this distracting issue so both companies can regain our focus on our respective missions to act for the global good. -Evan