Global team corners Chinese hacker allegedly running ‘likely world’s largest ever’ cybercrime botnet

Still image from a US Department of Justice video showing US Attorney General Merrick Garland announcing the arrest of Yunhe Wang and disruption of the “911 S5” botnet that officials said the Chinese cybercriminal ran for nearly a decade. (YouTube/US DOJ )
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Updated 30 May 2024
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Global team corners Chinese hacker allegedly running ‘likely world’s largest ever’ cybercrime botnet

  • Yunhe Wang was arrested on May 24 in Singapore, and authorities also seized $29 million in cryptocurrency: FBI
  • Wang is accused of selling access to the 19 million Windows computers he hijacked to criminals

WASHINGTON: An international law enforcement team has arrested a Chinese national and disrupted a major botnet that officials said he ran for nearly a decade, amassing at least $99 million in profits by reselling access to criminals who used it for identity theft, child exploitation, and financial fraud, including pandemic relief scams.

The US Department of Justice quoted FBI Director Christopher Wray as saying Wednesday that the “911 S5” botnet — a network of malware-infected computers in nearly 200 countries — was likely the world’s largest.
Justice said in a news release that Yunhe Wang, 35, was arrested May 24. Wang was arrested in Singapore, and search warrants were executed there and in Thailand, the FBI’s deputy assistant director for cyber operations, Brett Leatherman, said in a LinkedIn post. Authorities also seized $29 million in cryptocurrency, Leatherman said.
Cybercriminals used Wang’s network of zombie residential computers to steal “billions of dollars from financial institutions, credit card issuers and accountholders, and federal lending programs since 2014,” according to an indictment filed in Texas’ eastern district.

 

The administrator, Wang, sold access to the 19 million Windows computers he hijacked — more than 613,000 in the United States — to criminals who “used that access to commit a staggering array of crimes that victimized children, threatened people’s safety and defrauded financial institutions and federal lending programs,” US Attorney General Merrick Garland said in announcing the takedown.
He said criminals who purchased access to the zombie network from Wang were responsible for more than $5.9 billion in estimated losses due to fraud against relief programs. Officials estimated 560,000 fraudulent unemployment insurance claims originated from compromised IP addresses.
Wang allegedly managed the botnet through 150 dedicated servers, half of them leased from US-based online service providers.
The indictment says Wang used his illicit gains to purchase 21 properties in the United States, China, Singapore, Thailand, the United Arab Emirates and St. Kitts and Nevis, where it said he obtained citizenship through investment.
In its news release, the Justice Department thanked police and other authorities in Singapore and Thailand for their assistance.

 

 


Half the world faced an extra month of extreme heat due to climate change: study

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Half the world faced an extra month of extreme heat due to climate change: study

WASHINGTON: Half the global population endured an additional month of extreme heat over the past year because of manmade climate change, a new study found Friday.
The findings underscore how the continued burning of fossil fuels is harming health and well-being on every continent, with the effects especially under-recognized in developing countries, the authors said.
“With every barrel of oil burned, every ton of carbon dioxide released, and every fraction of a degree of warming, heat waves will affect more people,” said Friederike Otto, a climate scientist at Imperial College London and co-author of the report.
The analysis — conducted by scientists at World Weather Attribution, Climate Central, and the Red Cross Red Crescent Climate Center — was released ahead of global Heat Action Day on June 2, which this year spotlights the dangers of heat exhaustion and heat stroke.
To assess the influence of global warming, researchers analyzed the period from May 1, 2024 to May 1, 2025.
They defined “extreme heat days” as those hotter than 90 percent of temperatures recorded at a given location between 1991 and 2020.
Using a peer-reviewed modeling approach, they then compared the number of such days to a simulated world without human-caused warming.
The results were stark: roughly four billion people — 49 percent of the global population — experienced at least 30 more days of extreme heat than they would have otherwise.
The team identified 67 extreme heat events during the year and found the fingerprint of climate change on all of them.
The Caribbean island of Aruba was the worst affected, recording 187 extreme heat days — 45 more than expected in a world without climate change.
The study follows a year of unprecedented global temperatures. 2024 was the hottest year on record, surpassing 2023, while January 2025 marked the hottest January ever.
On a five-year average, global temperatures are now 1.3 degrees Celsius above pre-industrial levels — and in 2024 alone, they exceeded 1.5C, the symbolic ceiling set by the Paris climate accord.
The report also highlights a critical lack of data on heat-related health impacts in lower-income regions.
While Europe recorded more than 61,000 heat-related deaths in the summer of 2022, comparable figures are sparse elsewhere, with many heat-related fatalities mizattributed to underlying conditions such as heart or lung disease.
The authors emphasized the need for early warning systems, public education, and heat action plans tailored to cities.
Better building design — including shading and ventilation — and behavioral adjustments like avoiding strenuous activity during peak heat are also essential.
Still, adaptation alone will not be enough. The only way to halt the rising severity and frequency of extreme heat, the authors warned, is to rapidly phase out fossil fuels.

China establishes global mediation body in Hong Kong

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China establishes global mediation body in Hong Kong

  • China establishes a mediating body in Hong Kong where it aims to settle disputes between countries and between private international entities

HONG KONG: China signed a convention on Friday setting up a global mediation body in Hong Kong, which aims to be comparable to organizations such as the International Court of Justice (ICJ).
Beijing has taken a more proactive approach in international affairs in recent years, expanding its influence in global bodies such as the United Nations and the World Health Organization — especially as the United States has taken the opposite direction under President Donald Trump.
The move is also being seen as an attempt to shore up Hong Kong’s reputation as a leading place to conduct business, after Beijing’s imposition of a wide-ranging national security law in 2020 shook confidence in the impartiality of the city’s legal system.
Initiated by Beijing, the establishment of the International Organization for Mediation Convention (IOMed) was co-signed by 31 other “like-minded” countries ranging from Serbia and Pakistan to Papua New Guinea and Venezuela.
“The birth of IOMed will help transcend the zero-sum mentality of ‘win or lose’, promote the amicable resolution of international disputes, and build more harmonious international relations,” said China’s foreign minister Wang Yi, who presided over the signing.
Hong Kong’s government said IOMed will be the first intergovernmental body dedicated to mediation, while Wang said it would “fill a gap in the field.”
Mediation is when a neutral third party intervenes into a dispute to help two sides negotiate a jointly acceptable resolution to a conflict, as opposed to, for example, political bargaining or litigation.
The body will mediate disputes between countries, between countries and individuals from another country, and between private international entities.
IOMed “is on a par with” the United Nations’ ICJ and the Permanent Court of Arbitration in The Hague, said the Hong Kong government.
One of the latter’s more well-known rulings was in favor of the Philippines against China over territorial claims in the South China Sea.
Beijing refused to take part in the proceedings and has ignored the judgment.
Paul Lam, Hong Kong’s secretary for justice, wrote in an article that IOMed’s establishment came as “hostile external forces are attempting to de-internationalize and de-functionalize” Hong Kong.
IOMed will start operating by the end of this year or early 2026.


As Russia intensifies attacks, Ukraine air defenses under strain

Updated 30 May 2025
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As Russia intensifies attacks, Ukraine air defenses under strain

  • Despite peace talks between Kyiv and Moscow, Russia has launched the heaviest assaults on Ukraine since the start of war with more than 900 drones and 90 missiles over last weekend alone

KYIV: A wave of massive Russian aerial attacks has stretched Ukraine’s air defenses, raising fears about Kyiv’s reliance on Western systems to protect its skies in the fourth year of Russia’s invasion.
As the two sides open peace talks and Kyiv pushes for an immediate ceasefire, Moscow has launched its heaviest air assaults of the war, pummelling Ukraine with more than 900 drones and 90 missiles in a three-day barrage last weekend.
Ukraine downed over 80 percent of the incoming projectiles, but more than a dozen people were killed.
Experts worry how long the country can fend off the nightly attacks if Russia maintains — or escalates — its strikes.
“Ukraine’s air defenses are stretched thin and cannot guarantee protection for all cities against persistent and sophisticated Russian attacks,” military analyst Franz-Stefan Gady told AFP.
Russia’s drone and missile attacks have become more complex — and harder to thwart — throughout the war.
Kyiv’s air force says around 40 percent of drones launched recently are decoys — cheaper dummy craft that mimic attack drones and are designed to exhaust and confuse air defenses.
Russia increasingly sets drones to fly at a higher altitude — above 2,000 meters (6,500 feet) — and then dive down onto targets.
“At that altitude, they’re more visible to our radars but unreachable for small arms, heavy machine guns and mobile fire teams,” air force spokesman Yuriy Ignat told RBK Ukraine.
In addressing the threat, Ukraine is trying to strike a balance between pressing the West to deliver new systems and not wanting to concern a war-weary public at home.
“There’s no need to panic,” a Ukraine military source told AFP.
“We’re using all air defense systems that are available in Ukraine now, plus helicopters and aircraft. We are fighting somehow,” they said.


Moscow has the capacity to fire 300 to 500 drones a day, Ukrainian President Volodymyr Zelensky said earlier this week.
“By scaling up the use of Shaheds, they are forcing us to resort to expensive options,” military analyst Sergiy Zgurets said, referring to the Iranian-designed drones that are packed with explosives to detonate as they crash into buildings.
“This is a war of attrition that must be based on economic grounds — we must shoot down Shaheds with less sophisticated alternatives,” he said.
Ukraine uses several tools to protect its skies — from advanced Western fighter jets and air defense batteries like the US-made Patriot anti-missile system, to small mobile air defense teams armed with guns.
New technology has also become vital, such as the electronic jamming of drones to make them drop from the sky.
Increasingly, interceptors are being deployed — smaller, cheaper drones that take on enemy drones mid-air.
“We are already using them. The question now is when we will be able to scale up,” Zelensky said of the interceptors.
He too sees the issue as one of economics.
“The question is no longer about production capacity... It is a financial issue,” he told journalists.


Beyond drones, Russia is also deploying super-fast ballistic missiles, which are much more difficult to intercept.
“The biggest vulnerability lies in defending against ballistic missiles,” said analyst Gady.
A midday strike last month on the northeastern city of Sumy killed at least 35 people, while a hit near a children’s playground in Zelensky’s home city of Kryvyi Rig left 19 dead, including nine children.
To fend off ballistic missile attacks, Ukraine relies on a small number of Patriot systems.
They are concentrated around Kyiv, leaving other areas more exposed than the relatively better-protected capital.
Gady said the current supply of missiles for them is “sufficient” given the level of Russian strikes at the moment.
“But it is generally insufficient when compared to Russian ballistic missile production.”
Ukraine also faces potential shortages given delays in US output, according to Zgurets, creating “gaps” in Ukraine’s “fight against enemy hypersonic targets and ballistics.”
Deliveries of other key Western systems are expected over the next 18 months, but uncertainty is high given President Donald Trump’s criticism of aid for Ukraine.
US packages approved under predecessor Joe Biden are trickling in, but Trump has not announced any fresh support.
“Delivering air defense systems to us means real protection for people — here and now,” Zelensky said in a recent call for Western backing.
On a visit to Berlin on Wednesday, he said: “Defending our cities requires constant support with air defense systems.”


South Korean presidential frontrunner Lee Jae-myun proposes revising constitution on martial law

Updated 30 May 2025
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South Korean presidential frontrunner Lee Jae-myun proposes revising constitution on martial law

  • More South Koreans turned out for early voting on Friday after reaching record numbers on Thursday
  • As of noon on Friday, 25.8 percent of eligible voters had voted, the highest turnout compared to other polls in the same period

SEOUL: South Korea’s left-wing presidential frontrunner Lee Jae-myung proposed on Friday to amend the constitution to make it more difficult to impose martial law, aiming to prevent political crises like the one that erupted last year.

As candidates entered their final stretch before the snap presidential election on June 3, Lee and his Democratic Party urged South Koreans to come out to vote to end the political turmoil that has gripped the country since ousted conservative leader Yoon Suk Yeol’s short-lived martial law declaration in December.

“Our national prestige has fallen, but it (martial law) happens. We have to make that impossible systematically,” Lee told a live-streaming talk show on YouTube.

“Overcoming the insurrection (crisis) is no-brainer. Without it, our country will collapse,” Lee said, adding that economic growth and unity would be among his other top priorities.

Lee said he would seek to revise the constitution to strengthen martial law requirements, for instance by not allowing leaders to implement martial law without getting parliament’s approval within 24 hours.

More South Koreans turned out for early voting on Friday after reaching record numbers on Thursday. Early voting ends at 6 p.m. (0900 GMT) on Friday.

As of noon on Friday, 25.8 percent of eligible voters had voted, the highest turnout compared to other polls in the same period.

Lee also said a special prosecutor should investigate the December 3 martial law incident to make sure those responsible were punished, although he called for leniency for those in the military who were reluctant to follow orders.

Yoon Yeo-jun, chair of the Democratic Party’s election campaign, said that the vote would be an opportunity to set the country right so that the “Yoon Suk Yeol tragedy would never happen again.”

Kim Moon-soo, Lee’s rival candidate from the conservative People Power Party, said he would stop “legislative dictatorship” by Lee’s Democratic Party that holds a majority in parliament.


Trump administration considers allowing tariffs of up to 15% for 150 days, WSJ reports

Updated 30 May 2025
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Trump administration considers allowing tariffs of up to 15% for 150 days, WSJ reports

President Donald Trump’s administration is considering a stopgap effort to impose tariffs on large parts of the global economy under an existing law that includes language allowing for tariffs of up to 15 percent for 150 days, the Wall Street Journal reported on Thursday, citing people familiar with the matter.
The administration has not made a final decision and it could wait to impose any plans after a federal appeals court on Thursday temporarily reinstated the most sweeping of Trump’s tariffs following a trade court ruling to immediately block them, the report added.