Several U.S. state attorneys general are set to launch antitrust probes of large technology companies such as Alphabet's Google and Facebook amid concerns that the companies have too much power and are harming users and stifling competition.

Activist investor Elliott Management Corp on Monday unveiled a $3.2 billion stake in AT&T Inc and urged the sprawling U.S. telecommunications and media conglomerate to end its acquisition spree and focus on improving its business.

Dutch billionaire John de Mol on Monday said he would ask a court to rule in the case he filed against Facebook Inc earlier this year over fake bitcoin ads.

The potential penalties for several wide-ranging investigations into whether Facebook, Google and other big U.S. tech companies used their market power unfairly include everything from breaking up the companies, to large fines and forcing them to create more competition.

Activist investor Elliott Management Corp on Monday questioned AT&T Inc's $85 billion takeover of Time Warner and called for the wireless carrier to sell non-core businesses to boost its stock price, driving its shares their highest in a year.

U.S. President Donald Trump on Monday weighed in on activist investor Elliott Management Corp's moves targeting AT&T Inc , calling the hedge fund's actions "great news" and repeating his criticism of the wireless carrier's CNN news division.

Mexican Finance Minister Arturo Herrera said on Monday that his government is in talks with digital platforms about taxes, aiming to ensure that all corporations pay their share.

Portugal has broken up a counterfeit money ring that used dark websites to sell fake banknotes in exchange for virtual currency, arresting five people including the suspected kingpin who was extradited from Colombia, police said on Monday.

AT&T Inc shareholder Elliott Management Corp on Monday called for the wireless carrier to sell some of its non-core businesses and cut costs in an effort to return more value to shareholders, sending its shares up 10%.

Two of China's big three state telecom companies, China Telecom and China Unicom, are working together to build a 5G mobile network in a cost-cutting venture that could crimp orders for vendors such as Huawei Technologies.

Security concerns in Poland and the Czech Republic over telecoms equipment made by Huawei Technologies have not had a significant business impact despite creating uncertainty, a deputy head of central Europe and the Nordics said.

AT&T Inc shareholder Elliott Management Corp on Monday called the wireless carrier "deeply undervalued" and urged it to restructure its business, including cutting costs in units, to increase shareholder value.

Thailand's largest retailer, Central Group, and China's JD.com on Monday launched an financial services app to expand services with local banks in the latest move by the mall operator to increase its digital presence.

Texas Attorney General Ken Paxton on Monday will detail a multi-state antitrust probe of potentially anticompetitive practices at major U.S. technology companies, which is expected to focus on Alphabet's Google.

Uber Technologies Inc's restaurant delivery business will terminate its service in South Korea, Uber Eats said on Monday.

Alibaba Group chairman Jack Ma will step down from the Chinese firm on Tuesday, leaving his handpicked successor a daunting task of steering the $460 billion juggernaut at a time when the market for its core e-commerce business has slowed sharply.

Google said on Monday that it supported responsible political advertising that complies with local legislation, after Russia accused it of circulating such advertising during local elections at the weekend.

Facebook said on Monday that advertisers, not it, were responsible for complying with local election laws after Russia accused the tech giant of allowing political advertising during regional elections the previous day.

Google said on Monday it supported responsible political advertising that complied with local legislation, after Russia accused it of allowing such advertising during regional elections the previous day despite being asked to remove it.

Apple Inc and manufacturing partner Foxconn Technology Co Ltd on Monday rebutted allegations of lapses in people management leveled by a non-profit monitor of worker rights, though confirmed they employed too many temporary workers.