The U.S. has updated a decades-old science and technology agreement with China to reflect their growing rivalry for technological dominance. The new agreement, signed Friday after many months of negotiations, has a narrower scope and additional safeguards to minimize the risk to national security.

The State Department said the agreement sustains intellectual property protections, establishes new guardrails to protect the safety and security of researchers and "advances U.S. interests through newly established and strengthened provisions on transparency and data reciprocity."

TikTok has challenged a Canadian government order to shut down the Chinese video-sharing app's business operations in the country that was imposed over national security concerns.

The company said Tuesday that it filed an application for a judicial review with the Federal Court in Vancouver on Dec. 5, which seeks to set aside the order for TikTok to wind-up and cease its business in Canada.

Federal authorities on Tuesday urged telecommunication companies to boost network security following a sprawling Chinese hacking campaign that gave officials in Beijing access to private texts and phone conversations of an unknown number of Americans.

The guidance issued by the FBI and the Cybersecurity and Infrastructure Security Agency is intended to help root out the hackers and prevent similar cyberespionage in the future. Officials who briefed reporters on the recommendations said the U.S. still doesn't know the true scope of China's attack or the extent to which Chinese hackers still have access to U.S. networks.

Instagram is making teen accounts private by default as it tries to make the platform safer for children amid a growing backlash against how social media affects young people's lives.

Beginning Tuesday in the U.S., U.K., Canada and Australia, anyone under 18 who signs up for Instagram will be placed into restrictive teen accounts and those with existing accounts will be migrated over the next 60 days. Teens in the European Union will see their accounts adjusted later this year.

The pager was the first compact mobile communication tool to appear on the mass market and although smartphones have largely pushed it out, some people still use the reliable technology today.

Pagers were in the spotlight on Tuesday after hundreds of the devices used by Hezbollah members in Lebanon exploded simultaneously across the country in a first-of-its-kind attack that the group blamed on Israel.

Hours after an apparent attempt on Donald Trump's life over the weekend, Elon Musk took to his social platform X to post a thinking emoji and a comment that "no one is even trying to assassinate" the Democratic president and vice president.

In the midst of anti-Muslim riots in the U.K. — which were ginned up by a false rumor — Musk declared that "civil war is inevitable" in the country.

Meta said it's banning Russia state media organization from its social media platforms, alleging that the outlets used deceptive tactics to amplify Moscow's propaganda. The announcement drew a rebuke from the Kremlin on Tuesday.

The company, which owns Facebook, WhatsApp and Instagram, said late Monday that it will roll out the ban over the next few days in an escalation of its efforts to counter Russia's covert influence operations.

A Brazilian Supreme Court panel on Monday unanimously upheld the decision of one of its justices to block billionaire Elon Musk's social media platform X nationwide, according to the court's website.

The broader support among justices undermines the effort by Musk and his supporters to cast Justice Alexandre de Moraes as an authoritarian renegade who is intent on censoring political speech in Brazil.

Imagine a customer-service center that speaks your language, no matter what it is.

Alorica, a company in Irvine, California, that runs customer-service centers around the world, has introduced an artificial intelligence translation tool that lets its representatives talk with customers who speak 200 different languages and 75 dialects.

French authorities handed preliminary charges to Telegram CEO Pavel Durov on Wednesday for allowing alleged criminal activity on his messaging app and barred him from leaving France pending further investigation.

Both free-speech advocates and authoritarian governments have spoken in Durov's defense since his weekend arrest. The case has also called attention to the challenges of policing illegal activity online, and to the Russia-born Durov's own unusual biography and multiple passports.