The head of cyberattack preparations for the 2024 Paris Olympics said he expected to face billions of probing attacks against the Games’ computer networks.

A Ukrainian soldier after loading shells into an American-made Paladin howitzer near Bakhmut last year. Russian operatives are laying the groundwork for what could be a stronger push to support U.S. candidates who oppose aiding Ukraine.

Oliver Dowden, Britain’s deputy prime minister, in London earlier this month. He was expected to address Parliament on Monday.

U.S. officials say that a network of contractors used by China for computer infiltration campaigns is weakened by economic problems and rampant corruption in the country.

I-Soon, a security firm that is part of a network of spies for hire working closely with Beijing, targeted telecommunications firms, online gambling companies and local governments throughout Asia.

The I-Soon office building in Chengdu, China, on Tuesday.

A banner of portraits of slain Houthi fighters lines a street in Sana, Yemen, on Thursday.

Christopher A. Wray, the F.B.I. director, shared details of the operation at an annual security conference in Munich.

A photograph released by Iranian state news in August shows members of the Islamic Revolutionary Guards Corps.

The British Library in London in April.

Prince Harry leaving court in June after giving evidence in his lawsuit against Mirror Group Newspapers in London.

The headquarters of Kyivstar in Ukraine’s capital. The company said it was working to restore service after it was hit by a cyberattack.

Prince Harry has three ongoing lawsuits against British tabloid publishers.

Throngs of people fill an Apple store in Mumbai.

As companies like Microsoft helped Ukraine on the cybersecurity front with information and documentation, evidence of the physical war — destroyed Russian military equipment — was on display near Ukraine’s Foreign Ministry in Kyiv.