The second week of September had one story every owner should read twice: Microsoft documented an AI-assisted invoice fraud campaign aimed at accounts payable teams. Elsewhere, Europe's leading AI lab raised a record round, top mathematicians publicly challenged OpenAI, and Apple and Google both moved AI closer to the devices people use all day.
AI-assisted fake invoices target accounts payable
Microsoft says it detected more than a million fraud emails between August 3 and 5 that impersonated CEOs and CFOs and asked accounts payable staff to approve an ACH payment of nearly $50,000, according to its security blog published September 10. Each email carried a forged software subscription invoice and a fake forwarded thread between executives. Most messages went to US recipients. Microsoft says the templates showed signs of AI-assisted writing, though it cautions this does not prove how much AI generated, and it found no evidence the impersonated vendor was hacked.
Our take: This is the attack the industry warned about two weeks ago, now aimed at ordinary companies. The fix is old-fashioned: no payment to a new or changed account without a phone call to a number you already have on file.
Mistral raises €3 billion, Europe's biggest tech round
Paris-based Mistral AI closed a €3 billion Series D at a valuation above €21 billion, led by Samsung Electronics, according to a September 8 announcement from its law firm Orrick. EQT's Scaleup Europe Fund and PSG Equity co-led. The money is meant to expand compute capacity, research and international growth. Mistral is known for open-weight models that customers can run on their own systems.
Our take: A well-funded European alternative to the big US labs is good news for any business that wants options. If you handle data for clients in Europe, a vendor that offers models you can host yourself is worth a look.
Fields medalists push back on OpenAI's math claims
Twenty-five winners of the Fields Medal, mathematics' top prize, signed a letter accusing AI labs of rushing to announce solutions to famous problems without proper write-ups or credit, TechCrunch reported on September 11. The letter raises attribution and plagiarism concerns. TechCrunch ties the dispute to OpenAI, which announced a proof of a major problem that remains unverified, and notes OpenAI withdrew its sponsorship of a Caltech math event after criticism.
Our take: This is a fascinating fight about credit, and it applies well beyond math. When AI helps produce work for your clients, decide now how you will disclose it and who checks it before it carries your name.
Apple Watch will transcribe and summarize conversations
At its September 9 event, Apple introduced Apple Watch Series 12 and Ultra 4 with a set of features it calls Audio Intelligence, MacStories reported. Live Rewind shows a transcript of the last 15 seconds of a conversation, and Siri Recap can summarize conversations continuously, on a schedule or on demand. MacStories says both features arrive later this year. The Series 12 starts at $399 in aluminum.
Our take: Wearables that record and summarize talk will show up in your office, client meetings and job sites. Write a short policy now on when recording devices are allowed, especially if you handle privileged or confidential conversations.
Gemini lands on Windows desktops
Google released a Gemini desktop app for Windows 10 and 11 on September 10, according to the Google blog. Pressing Alt + Space opens Gemini over whatever you are working on, and it can draft summaries using information from Gmail and Google Drive. Its agent and video features require a Google AI subscription.
Our take: AI assistants are moving from a browser tab to a keyboard shortcut, which means staff will use them on whatever is on screen. Make sure your team knows which assistant is approved for client data and which is not.
One thing to do this week
Write down your payment verification rule and give it to everyone who can approve a payment. One line is enough: any new vendor, changed bank details or urgent request from an executive gets a callback to a known number before money moves.
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