OpenAI Launches GPT-5.5-Cyber Model for Vetted Security Researchers

• Agentic security operations startup Exaforce announced a $125 million Series B funding round at a reported $725 million valuation, marking one of the largest rounds in the emerging AI security operations center market. • The round was backed by HarbourVest Partners, Peak XV Partners, Mayfield Fund, Khosla Ventures, Seligman Ventures, and AICONIC; Exaforce has now raised $200 million total following a $75 million Series A just over a year ago.

• Google disclosed the first observed AI-assisted zero-day exploit, marking a significant escalation in concerns about artificial intelligence being weaponized for cybersecurity attacks. • The discovery raises concerns about AI-generated cyber models and the potential for malicious actors to leverage machine learning to develop previously unknown exploits faster than traditional methods.

• Abstract has been selected for Notable Capital's Rising in Cyber 2026 report, recognizing it among top emerging cybersecurity firms. • The report is based on CISO survey data and market analysis, highlighting industry shifts from AI agents transforming security operations.

• Tech: NYC reports 21 startups crossed the Series A threshold in April 2026, tracked in their monthly 'Series A: A Series' update. • Funding checks are notably increasing in size, reflecting stronger investor confidence in early-stage tech ventures amid economic recovery.

• China officially launched a global artificial intelligence education service platform on May 12, 2026, to broaden international access to digital learning resources. • The platform integrates AI-driven tools for personalized learning, multilingual content delivery, and interactive modules supporting over 100 languages.

• Google Threat Intelligence Group announced its first detection of a zero-day exploit generated using artificial intelligence, marking a significant cybersecurity milestone. • The proactive measures by Google's team successfully prevented a mass exploitation attempt, though specific details on the vulnerability or attacker were not disclosed.

• Arctic Wolf launched an AI-powered Mobile Threat Defense product to counter rising mobile-based cyber threats, powered by its Aurora Superintelligence Platform. • The solution leverages proprietary AI and decades of real-world security expertise for modern security operations protecting organizations.

• ProjectDiscovery, a leader in vulnerability detection and autonomous security testing, was named to the Rising in Cyber 2026 list by Notable Capital on May 12, 2026. • The company joins 30 startups that have raised over $6.9 billion collectively per PitchBook data, focusing on defining next-generation cybersecurity solutions.

• Notable Capital unveiled Rising in Cyber 2026, its third annual list spotlighting 30 promising private cybersecurity startups, announced on May 12, 2026, from San Francisco. • The selected cohort has collectively raised over $6.9 billion according to PitchBook, amid a cybersecurity market projected to grow from $151 billion in 2025 to $250 billion by 2029 per Morgan Stanley.

• Charms Interactive, Inc. announced the launch of Charms.ai and closed a $1.5 million pre-seed funding round to build the economy for AI characters. • The funding supports development of an AI-driven platform enabling interactive AI character ecosystems for various applications.

• Ciridae has raised $20 million in seed funding led by venture capital firm Accel to develop AI operating systems tailored for mid-market businesses in industrial and services sectors. • The funding will enable Ciridae to build and deploy AI-powered operational platforms designed to streamline processes across manufacturing and service-oriented industries.

• Anecdotes, an enterprise governance, risk, and compliance (GRC) platform powered by agentic AI, has been recognized as a Rising in Cyber 2026 honoree by leading cybersecurity analysts. • The platform uses autonomous AI agents to transform enterprise security operations and streamline compliance workflows across organizations.