Rein Security Raises $25M to Secure AI Agents

Key Takeaways

• Rein Security raised $25 million in Series A funding, bringing total capital to $35 million, to secure enterprise AI agents using sidecar technology
• Rein's revenue grew 8x and customers grew 5x since launching in January 2026
• U.S. ETFs attracted $151 billion in September 2026, with AI hardware among key thematic focuses
• Newegg integrated Universal Commerce Protocol checkout on Google Gemini, ChatGPT, and Perplexity
• Fastly's Q2 revenue reached $183.3 million with security revenue up 43%, drawing Oppenheimer upgrade
• Rein's Agent Breakers team demonstrated AI agent compromises at Black Hat USA 2026
• Rein's sidecar platform blocks harmful AI agent actions without routing data through a gateway
• AI hardware ETFs and active investment strategies are driving record ETF inflows
• Expand Energy hired Thoughtworks to implement AI companywide for operations and cost savings
• Aiforia partnered with PathAI to expand AI pathology tools across US and European labs

Rein Security raises $25M to protect enterprise AI agents

Rein Security raised $25 million in Series A funding led by Glilot Capital and Sienna Venture Capital. The company uses patented sidecar technology to monitor AI agents in real time and block harmful actions. Since launching in January 2026, revenue grew 8x and customers grew 5x. Clients include Dun & Bradstreet and Lemonade. The funding will support product development and global hiring.

Rein Security secures $25m as AI agent risks grow

Glilot Capital and Sienna Venture Capital led Rein Security's $25 million raise, bringing total capital to $35 million. The company's sidecar platform gives security teams visibility into AI agent actions and stops harmful behavior without routing data through a proxy. Research from Rein's Agent Breakers team showed how AI agents can be compromised at Black Hat USA 2026. Since its January 2026 launch, Rein has grown revenue 8x and added customers across finance, healthcare, retail and energy.

Rein Security raises $25M to fight adversarial AI threats

Rein Security closed a $25 million Series A round co-led by Glilot Capital and Sienna Venture Capital. The company's platform uses sidecar technology to secure AI agents at runtime without passing data through a gateway. At Black Hat USA 2026, Rein's Agent Breakers team showed how an AI shopping agent was compromised at a major U.S. retailer. The company also uncovered a prompt injection attack hidden in a PDF targeting a global enterprise. Revenue has grown 8x since the company launched in January 2026.

September ETF launches highlight AI hardware and active strategies

U.S. ETFs pulled in $151 billion in September 2026, pushing year-to-date inflows to a record $1.54 trillion. Active ETFs made up 75% of the 106 new ETF launches that month. State Street's SPDR UC Investments 90/10 Endowment Strategy Index ETF raised a record $2.5 billion in initial assets. New thematic products targeted AI hardware supply chains, including the REX AI Chipmaking ETF. Goldman Sachs, Janus Henderson and MFS also expanded their active equity and fixed income ETF lineups.

Canadian AI ETFs deliver strong returns, echo dot-com era

Canadian-listed AI ETFs are gaining popularity as investors seek exposure to the growing artificial intelligence market. The CI Global Artificial Intelligence Fund grew 32.6% over the past year, while Global X's semiconductor AI ETF returned 77.6%. Global X launched six AI-themed ETFs including pure plays focused on memory, semiconductors and robotics. Most other Canadian AI ETFs follow broad index-style strategies. Analysts say AI could become as transformative as the internet over time.

Oppenheimer upgrades FSLY as agentic AI traffic promises sustained growth

Fastly shares jumped nearly 16% after Oppenheimer upgraded the edge cloud provider. Fastly's Q2 revenue grew 23% to $183.3 million, with security revenue up 43%. Oppenheimer sees strong growth from agentic AI traffic and higher contract values. The company will report Q3 earnings on November 4.

Ferrari chairman John Elkann rejects AI bubble fears but warns of revenue uncertainty

Ferrari chairman John Elkann told CNBC he does not believe AI bubbles will stop technological progress. He warned that it is unclear how businesses will make money from AI. He also said European tech firms can compete with US and Chinese rivals. Elkann stressed investors should focus on the long-term direction of AI.

Aiforia and PathAI partner to bring AI pathology tools to labs in US and Europe

Aiforia signed a deal with PathAI to offer AI pathology solutions through the AISight Marketplace. Aiforia's deep learning tools will integrate into PathAI's AISight Dx system for clinical labs. The partnership aims to expand access to AI-powered pathology models across both the US and European markets.

Expand Energy hires Thoughtworks to build AI capability across the company

Expand Energy, the largest US natural gas producer, hired tech consultant Thoughtworks to implement AI companywide. The company formed from the 2024 merger of Chesapeake Energy and Southwestern Energy. Expand Energy wants to use AI to improve operations, cut costs, and make better decisions.

Nokia stock in focus as AI infrastructure demand lifts networking equipment

Nokia shares moved with a technology-led rally driven by strong demand for AI infrastructure. The company builds telecom and networking equipment including mobile-network gear and data-center connectivity. Nokia trades on the New York Stock Exchange. AI infrastructure demand kept networking equipment names in focus.

Newegg brings checkout to Google AI shopping

Newegg has integrated Universal Commerce Protocol checkout on Google. U.S. shoppers can now buy eligible Newegg products directly in Google Search AI Mode and Gemini. Shoppers can pay through Google Pay and stay in the conversation. Newegg fulfills and supports every order. The checkout is also available on ChatGPT and Perplexity.

AI expert says careless use is the real danger

Meredith Whittaker says science does not support fears that AI will turn against humans. She believes warnings about AI becoming a threat are exaggerated. Whittaker argues that careless use of AI is the true problem. She thinks society should focus on how people use the technology. Her views challenge common fears about AI risks.

AI chatbots struggle with mental health emergencies

AI chatbots often fail to help users facing mental health crises. Research shows these tools are not reliable for people in urgent need. Chatbots may not recognize signs of a crisis or respond properly. The findings raise concerns about relying on AI for mental health support. Users should seek help from trained professionals instead.

Sources

• Rein Security Raises $25M to Secure the AI Agents Enterprises Build and Stop the Ones That Attack Them
• Rein Security lands $25m as AI agents outrun security
• Rein Security Raises $25M to Secure AI Agents, Stop Adversarial AI
• Active Strategies & AI Hardware Take Center Stage in September ETF Launches
• Red-hot AI ETFs harken back to dot-com days
• FSLY Rockets Nearly 16%: Oppenheimer Upgrades Stock As Analyst Sees Agentic AI Driving Sustained Growth
• Ferrari’s chairman is bullish on AI. He’s less certain how businesses will cash in
• Aiforia and PathAI Integrate AI Pathology Tools for US, EU Labs
• From Drill Bit to Trading Desk: Expand Energy Goes All-In on AI
• Why is Nokia (NYSE:NOK) stock trading in the spotlight amid the AI networking surge?
• U.S. Shoppers Can Now Discover and Purchase Eligible Newegg Products Directly Within the Gemini App, and Google Search, Including AI Mode
• 'Careless use of AI is the real threat
• AI Chatbots Often Fail To Help Users in Mental-Health Crisis