A programmer in Guernica, Spain, on Thursday, working on PHP code, software used throughout the internet.

Prime Minister Rob Jetten of the Netherlands in Brussels last week. He said that his cabinet was closely monitoring the online vulnerability caused by a security flaw in PHP.

The website for the French government was temporarily unavailable on Wednesday amid hacking concerns stemming from major bugs in a piece of software used widely across the internet.

Japan has been hit by a wave of cyberattacks that have affected businesses and government.

Empty shelves at an Intermarché supermarket in Névez, France, on Monday, following a cyberattack that caused refrigerators to defrost.

CrowdStrike, a cybersecurity firm, said in a report on Wednesday that it had found evidence of the use of A.I. in the attacks.

The U.N. Security Council convened its first meeting on artificial intelligence last week.

OpenAI’s offices in San Francisco. The company said it would work to rebuild trust with Australians.

For many in China, A.I. doomsday warnings feel remote and distinctly Western.

Prime Minister Anthony Albanese of Australia at the U.N. General Assembly in New York on Thursday. He has called for international standards to govern A.I.

Sam Altman, the head of OpenAI, told the U.N. Security Council on Wednesday that A.I.’s development had made its “upside more tangible, but also the stakes and risks more immediate.”

The United Nations headquarters on Monday as world leaders convened in New York for the General Assembly.

The Great Hall of the People in Beijing. China’s spy chief called for more party control over A.I. and stricter government oversight of the industry.

In China, government agencies, companies and almost 80 percent of citizens use WeChat to conduct business, make payments and communicate.

The Chinese leader Xi Jinping opening the World A.I. Conference in Shanghai, China, in July. Even as China supports openness in A.I., it needs to “constantly refine measures to forestall loss of control,” he said.

Along Parliament Square in London is the home of the A.I. Security Institute, which employs weapons inspectors, epidemiologists and code breakers to probe the technology’s risks.