Last Week in Tech – OpenAI Retires GPT-4o, China-Linked Telco Espionage, and an Ivanti Zero-Day Hits Brussels

Your Monday catch-up, with a security lens. This week: OpenAI pulls GPT-4o and a swag of older models out of ChatGPT, pushing everyone to GPT-5.2. On the security desk it's a heavy one — the EU Commission and Dutch government are breached through Ivanti zero-days, China-linked espionage hits all four of Singapore's telcos, Dutch telco Odido loses data on 6.2 million customers, and a malicious Outlook add-in slips onto the Microsoft Store to steal thousands of accounts.

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Sources: TechCrunch; OpenAI; The Record; BleepingComputer.