Mississippi mayor says ransomware incident led city to shut down systems

Security news digest covering a ransomware disruption at Vicksburg, Mississippi; Warlock ransomware attacks against critical infrastructure in Portuguese- and Spanish-speaking countries through Microsoft SharePoint vulnerabilities; the extradition of an Iranian national accused of university breaches and intellectual-property theft; alleged covert data scraping by OpenAI software; and China-linked phishing and backdoor campaigns targeting AI companies and Asian governments. No specific CVE identifiers are provided in the supplied summaries.