Ash Bhat and Rohan Phadte, computer science students, recently stared at a screen in their Berkeley apartment showing the Twitter account of someone called “Red Pilled Leah.” They suspected she was a “bot,” short for robot.

Red Pilled Leah joined Twitter in 2011 and had 165,000 followers. The majority of her 250,000 tweets were retweets on political topics. Was she a human with strong opinions or an automated account that is part of a digital army focused on riling up Americans over divisive social and political issues?

Internet companies are under pressure to do more to crack down on such automated accounts, following scrutiny over Russian-backed efforts to influence the last U.S. presidential election. But companies are struggling over how to identify the malicious bots from the merely opinionated human users.

The two students at the University of California, Berkeley developed a software program called botcheck.me that looks for 100 characteristics in Twitter accounts that they say are common among bots.

Among them, tweeting every few minutes, gaining a lot of followers in a short time span and retweeting other accounts that are likely bots. In addition, bot accounts typically endorse polarizing political positions and propagate fake news, they say.

Concern about Twitter bots

Twitter says that less than five percent of its 69 million monthly active users in the U.S. are automated, but some researchers have pegged the bots at closer to 15 percent.

U.S. lawmakers say that bots on Twitter played a role in trying to upend the democratic process.

“Bots generated one out of every five political messages posted on Twitter over the entire presidential campaign,” said Senator Mark Warner, a Democrat from Virginia.

Facebook requires its users to prove their identity. To get an account on Twitter, on the other hand, a user needs a phone number. And Twitter allows automated accounts for legitimate purposes, such as for companies to provide customer service or for public safety officials to spread the word regarding a possible danger.

But the company is also trying to crack down on bots and “other networks of manipulation,” the company said in a blog post.

Nonhuman Twitter behavior

Bhat and Phadte have worked on other projects, such as developing technology to determine the political bias of a news article or to detect fake news on Facebook.

They turned to Twitter after they noticed that many accounts tweeting about politics appeared to be “nonhuman,” Bhat said. These accounts gained a lot of followers fast and tweeted and retweeted frequently, about five times as much as a human account. They promoted polarizing views and fake news.

Launched in October, Botcheck.me has a 93.5 percent accuracy rate, the students say. However, they have heard from real people complaining that their accounts have been falsely identified as “bots.” When the algorithm makes a mistake, the two students say they investigate what went wrong and improve the program.

Phadte says it matters if a Twitter account is a human being or a robot.

“People are seeing political, polarizing opinions that aren’t accurate,” Phadte said. “People are getting angry at each other about stereotypes that are not really true.”

Bot-like characteristics

Bhat pressed a blue button next to Red Pilled Leah’s Twitter account. Botcheck.me scanned a person’s Twitter history and ran the tweets through an algorithm to predict if the account was actually a bot.

Sure enough, Botcheck.me said Red Pilled Leah, who claims to be an entrepreneur with a master’s degree in psychology, exhibits “bot-like characteristics.”

The students said they have contacted Twitter about their software, but haven’t heard back. Twitter didn’t respond to a request for comment from Voice of America. However, the company has said that it can’t share details of how it’s determining which accounts are bots.

From their vantage point, the students say the bots are getting more sophisticated. A whole network of accounts will retweet a single tweet to spread a message quickly. And programmers can change bots’ behavior as detection methods improve. But the students say that only makes it more important to determine when messages are being spread by malicious actors.

“The reason why this really matters is that we formulate our views based on the information we have available to us,” Bhat said of the social media content. “When certain views are propagated on the network that is very artificial, it tends to influence the way we think and act. We think it is very horrific.”

To use botcheck.me, users can download a Google Chrome extension, which puts the blue button next to every Twitter account. Or users can run a Twitter account through the website botcheck.me.
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Flying drones are nothing new in the skies, but online retailers have been investing in them as a way to deliver goods faster and to those in hard-to-reach rural areas. But the automation doesn’t stop there. Arash Arabasadi reports.
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Prepare to be amazed … and possibly terrified. Engineers in Zurich have created a four-legged robot that may one day do labor that is dangerous for humans. It’s also equipped with thermal cameras, which means the “ANYmal” may one day keep an eye on you. Arash Arabasadi reports.
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In Cambodia, one of Asia’s poorest countries, the rapid improvement in internet connectivity and availability of affordable smartphones has been a great leveler.

Many of its roughly 15 million urban and rural inhabitants have gained, in a short time, access to mobile internet and social media, which provide relatively free communication and independent, nongovernment sources of information.

Some tech-savvy Cambodian activists, like Ngeth Moses, began to harness the internet to foster social change years ago.

Ngeth Moses, head of the Media/ICT Unit with the Center for Alliance of Labor and Human Rights in Phnom Penh, has campaigned online through social media platforms for political freedom and human rights causes.

Ngeth Moses has also trained dozens of members of NGOs and youth organizations on how to use online campaigning and online expression platforms, such as Open Cyber Talk.

In the past year or so, however, the optimism among activists about the positive impact of greater internet access has given way to growing fears as the Cambodian government stepped up efforts to curtail online freedom of expression and political opposition.

“I’m more cautious now before posting or commenting [on] anything political online,” Ngeth Moses said, because of the growing state scrutiny of online content and the increase in reprimands or arrests of netizens.

At the same time, however, Prime Minister Hun Sen and the ruling Cambodian People’s Party (CPP) have actively raised their online profile ahead of the national elections next year in an attempt to reach millions of new social media users.

Tightening online control

In early 2016, a new law increased the government’s authority over the telecommunications industry to include “overbroad surveillance powers” that pose “a threat to the privacy of individual users,” according to the U.S. think tank Freedom House.

The law includes punishments for several offensives, among them a prison term of seven to 15 years for threatening “national security,” a charge that the local human rights group Licadho said is vague and open to political abuse.

A pending cybercrime law is also raising concerns about legal limits on what users are allowed to post on the internet.

In 2016, the court used an older law to punish online dissent when it sentenced university student Kong Raiya to 18 months in prison for incitement over a Facebook post that criticized the CPP.

The opposition Cambodia National Rescue Party (CNRP) has been increasingly targeted over online statements.

Senator Hong Sok Hour was sentenced to seven years in prison for allegedly posting false documents on Facebook in 2016. On October 25, King Norodom Sihamoni pardoned him at Hun Sen’s request.

Last month, a 20-year-old fruit vendor was arrested in western Cambodia and reportedly charged with incitement and public insult for Facebook posts said to defame Hun Sen and the Queen Mother Norodom Monineath Sihanouk.

“The situation of internet freedom in Cambodia is of increasing concern,” said Ramana Sorn, who coordinates the Protecting Fundamental Freedoms Project of the Cambodian Center for Human Rights, adding that the government’s technological ability to collect the communications and social media data from individual users has expanded exponentially.

“In the current political climate, social media users must be keenly aware of the risks related to what they are posting and sharing on Facebook and other web platforms,” Ramana Sorn said.

Nop Vy, media director of the Cambodian Center for Independent Media, echoed these concerns, saying, “Human rights and social workers who are using the social media platforms feel insecure in communicating and publishing their information.”

​Government plays down concerns

Government spokesmen told VOA Khmer that the activists’ criticism was overblown and that prosecutions over online content concerned only those who defamed others or posed genuine threats.

“We need those multiple opinions, but we do not want those insulting or organizing any subversive campaigns against other people’s reputations — they will face legal consequences,” said Phay Siphan, spokesman for the Council of Ministers.

“Only those having a hidden agenda are concerned about it,” CPP spokesman Sok Eysan said. “Those who have nothing to hide, they need not worry about being surveilled or monitored.”

The rising online repression comes, however, amid a nationwide crackdown on political opposition and independent media ahead of the July 2018 national elections.

On September 3, CNRP Chairman Kem Sokha was arrested and charged with treason.

Hun Sen announced the CNRP would be dissolved, and many party members, including deputy party leader Mu Sochua, have fled Cambodia since the first week of October, fearing arrest.

Also in September:

The 24-year-old independent English-language newspaper The Cambodia Daily closed after receiving a $6 million tax bill;
The Phnom Penh office of U.S.-funded Radio Free Asia Khmer-language news broadcaster was closed;
Local FM radio stations were ordered to stop carrying the Khmer news broadcasts by RFA and the Voice of America; some independent FM stations were shut down;
And the U.S.-funded National Democratic Institute was expelled after years of operation. 

This crackdown, seen as the worst in 20 years, prompted widespread international condemnation and threats of action from the European Union and the United States, but Cambodia, which relies on China’s political support and largesse, appears unmoved.

​Greater access to information

Despite the broad crackdown, millions of Cambodians are now on Facebook and connected through digital communications apps, sometimes encrypted.

Experts said any repressive government will find it hard to check the spread of independent information that can inform the public of politically sensitive issues.

In 2015, internet/Facebook became the main information channel for Cambodians, with 30 percent of netizens using it to access information, surpassing the more state-controlled TV (29 percent) and radio (15 percent), according to an Asia Foundation report.

The improved access to online information “often wakes people up and makes [them] more likely to be critical of the government,” said Mike Godwin, an internet freedom expert and a senior fellow with the U.S.-based R Street Institute.

“In fact, efforts to suppress [online] dissent probably will not work as well as they had hoped because they may have the effect of awaking citizens to their unhappiness,” he said.

When popular political analyst Kem Ley was assassinated last year, his funeral march in the capital, Phnom Penh, drew hundreds of thousands of people, many of whom reportedly learned of the event through online messages and posts that quickly went viral.

Cambodia’s capacity and effort to control online content, however, are still less than those of its mainland Southeast Asian neighbors, according to Freedom House, which ranked the country on its 2016 Freedom on the Internet Index as “partly free.”

​Strongman seeks ‘likes’

Amid the tightening government control on online dissent, Hun Sen and his CPP have sought to expand their social media use to reach out to the public ahead of the national elections next year. In 2013 elections, the CPP narrowly beat the CNRP in a disputed result.

The 65-year-old strongman has urged officials to use Facebook, and he has presented a warm, revitalized image on his Facebook page, which he began in 2015 and has 8.5 million followers. Some photos show him driving passenger cars, attending family outings and frequently exercising.

Some researchers have said that the Cambodian government has formed a nationwide program with “cyberunits” run at local levels, which spread countless pro-CPP messages, denounce the opposition and attack government criticism on social media.

Ngeth Moses, the tech-using activist, said the CPP’s recent embrace of social media only belied the worsening freedom of expression in Cambodia, as could be seen in the controls exercised over pro-CPP Facebook pages. 

“Commenters on the prime minister’s [Facebook] page have been followed and if these comments contained inappropriate words, there were people who got the commenters to apologize,” he said. “On the surface, the internet freedom in Cambodia looks better than in some other countries in ASEAN [the Association of Southeast Asian Nations], but in practice it is not.”
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The World Robot Olympiad, being held in Costa Rica this weekend, shows human athletes still have little to worry about: Sweat and glory do not compute well when relegated to faceless automatons.

But the same may not be true for workers, especially those in menial or transport activities where robots are steadily taking over. Think factory assemblers and sorters, or even self-driving cars.

Some of the technology behind the robot revolution could be seen in the Olympiad, which gathered more than 2,500 people from more than 60 countries in a vast hall on the outskirts of Costa Rica’s capital, San Jose — the first time the event, now in its 14th year, has been held in the Americas.

Pint-sized robots packed with sensors and rolling on plastic wheels showed their football skills by battling rivals on miniature soccer fields.

Others rolled across tables seeking out blocks of certain colors and sizes to grab and place within demarcated zones.

It was all more than child’s play for the contestants representing their countries, aged from 6 to adult.

“It’s so difficult,” said Hassan Abdelrahem Alqadi, 17, from the United Arab Emirates.

“We have to do it in the system and make the robot take the color and go to the pieces that we want. So it’s very difficult,” he said.

The teen, who hopes to be a mechanical engineer in the oil industry, admitted he had picked up tips from watching other competitors’ practice sessions. He and other tech-savvy youngsters crowded around dozens of tables — computers or robots in their hands — to observe.

Environmental theme

At one table, a group of Australian teens fine-tuned their contraptions trying to win possession of a palm-sized transparent “soccer” ball containing a sensor. The robots were able to detect the ball, grab it while fending off rivals, and protect the goal area.

Being at the Olympiad, surrounded by equally bright peers from around the world, was eye-opening for the teens.

“We’ve never been to an international competition before, so it’s a new experience. I can really only compare it to the competitions we’ve had in Australia — in Australia, we’ve done pretty well,” said Tiernan Martin, 13.

The competition over the weekend was being judged in several age categories, as well as in the football, university and open tournaments.

This year, the environment was the overriding theme — an area in which Costa Rica is at the forefront.

Thus, robots had to show their usefulness in sustainable tourism (identifying protected areas), carbon neutrality (planting trees) and clean energy (seeking out the best places to set up wind turbines.

Robots ‘help humanity’

Costa Rica’s science and technology minister, Carolina Vasquez Soto, told AFP her country won the right to host the Olympiad — hitherto held mostly in Asia — “for the participation we’ve had in sustainability, because we are contributing to that with more and bigger resources.”

On the larger question of what robots and artificial intelligence now represent for human workers, the national organizer for the World Robot Olympiad, Alejandra Sanchez, was upbeat.

While some see robots as a threat to jobs, she said she saw them as an opportunity.

“I think it’s really good. It’s good they replace human beings in some tasks. But we are not being discarded — we’re changing the functions for human beings,” she said.

“Before, a human being was the one painting cars, for example. Now we have a robot painting vehicles and a human being controlling the robot. … So, it’s a personal opinion, but I believe robots are here to stay, and here to help humanity.”
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Some foreign students in U.S. schools find it challenging to submit grammatically correct, idiomatically accurate papers. So two former Ukrainian graduate students launched an artificial intelligence-driven grammar-proofing program that goes well beyond spell-check. Today, their 8-year-old startup, Grammarly, whose first venture round netted $110 million in May, has offices in Ukraine and the U.S. VOA Ukrainian Service correspondent Tatiana Vorozhko has the story.
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Aerial surveillance can be an indispensable part of police or security work. But small police forces certainly can’t afford planes or helicopters to help them do their jobs. So increasingly, drones are filling the gap and providing eyes in the sky. VOA’s Kevin Enochs reports.
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The United Nations is set to host talks on the use of autonomous weapons, but those hoping for a ban on the machines dubbed “killer robots” will be disappointed, the ambassador leading the discussions said Friday.

More than 100 artificial intelligence entrepreneurs led by Tesla’s Elon Musk in August urged the U.N. to enforce a global ban on fully automated weapons, echoing calls from activists who have warned the machines will put civilians at enormous risk.

A U.N. disarmament grouping known as the Convention on Certain Conventional Weapons (CCW) will on Monday begin five days of talks on the issue in Geneva.

But anything resembling a ban, or even a treaty, remains far off, said the Indian ambassador on disarmament, Amandeep Gill, who is chairing the meeting.

“It would be very easy to just legislate a ban but I think … rushing ahead in a very complex subject is not wise,” he told reporters. “We are just at the starting line.”

He said the discussion, which will also include civil society and technology companies, will be partly focused on understanding the types of weapons in the pipeline.

Proponents of a ban, including the Campaign to Stop Killer Robots pressure group, insist that human beings must ultimately be responsible for the final decision to kill or destroy.

They argue that any weapons system that delegates the decision on an individual strike to an algorithm is by definition illegal, because computers cannot be held accountable under international humanitarian law.

Gill said there was agreement that “human beings have to remain responsible for decisions that involve life and death.”

But, he added, there are varying opinions on the mechanics through which “human control” must govern deadly weapons.

Machines ‘can’t apply the law’

The International Committee of the Red Cross, which is mandated to safeguard the laws of conflict, has not called for a ban, but has underscored the need to place limits on autonomous weapons.

“Our bottom line is that machines can’t apply the law and you can’t transfer responsibility for legal decisions to machines,” Neil Davison of the ICRC’s arms unit told AFP.

He highlighted the problematic nature of weapons that involve major variables in terms of the timing or location of an attack — for example, something that is deployed for multiple hours and programmed to strike whenever it detects an enemy target.

“Where you have a degree of unpredictability or uncertainty in what’s going to happen when you activate this weapons system, then you are going to start to have problems for legal compliance,” he said.

Flawed meeting?

Next week’s U.N. meeting will also feature wide-ranging talks on artificial intelligence, triggering criticism that the CCW was drowning itself in discussions about new technologies instead of zeroing in on the urgent issue.

“There is a risk in going too broad at this moment,” said Mary Wareham of Human Rights Watch, who is the coordinator of the Campaign to Stop Killer Robots.

“The need is to focus on lethal autonomous weapons,” she told AFP.

The open letter co-signed by Musk as well as Mustafa Suleyman, co-founder of Google’s DeepMind, warned that killer robots could become “weapons that despots and terrorists use against innocent populations, and weapons hacked to behave in undesirable ways.”

“Once this Pandora’s box is opened, it will be hard to close,” they said.
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The results of three recent separate studies are staggering, the oceans are filled with about 5 trillion bits and bobs of plastic debris. Now, one English sailing team is doing its part, skimming plastic off the ocean’s surface, bucket by bucket. VOA’s Kevin Enochs reports.
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Bicycle highways, urban farms and local energy hubs — just some of the ways that yesterday’s smokestack cities are turning into tomorrow’s green spaces.

The Urban Transitions Alliance (UTA), a network that brings together cities in Germany, the United States and China, launched this week to help members learn regeneration tricks from each other.

“What to do with your brownfield sites, how to transition with citizens in mind, create new jobs — these cities have a lot of challenges in common,” said Roman Mendle, Smart Cities program manager at ICLEI, an international association of local governments.

As up to 70 percent of global greenhouse gas emissions are generated in urban areas, cities have to play a leading role in addressing climate change.

Experts from more than 20 countries met in Essen, Germany, this week to launch the UTA and thrash out how post-industrial cities can reinvent themselves in plans that will be submitted to the U.N. climate talks in Bonn this week.

Essen, once a coal and steel city known as Germany’s “Graue Maus” (grey mouse) for its polluted air and waterways, has gained a reputation as a trailblazer for sustainability, becoming the European Commission’s European Green Capital 2017.

“There is a lot of know-how in Essen on how to transition from the age of carbon to a post-carbon world,” said Simone Raskob, Essen’s deputy mayor and head of its environment department.

“No city can do this by itself. There are a lot of challenges,” Raskob, who leads the European Green City – Essen 2017 project, told Reuters.

Experts praise Essen for cleaning up its waterways, creating green spaces and turning grimy industrial sites into dynamic cultural centers, such as the Zeche Zollverein, a towering UNESCO World Heritage site that arose from a disused coal mine.

To ease traffic congestion, Essen built Germany’s first bike highway, connecting with a 100-km (62-mile) regional network.

Pittsburgh, Pennsylvania

Pittsburgh, once a dynamo of U.S. heavy industry, has shifted from a fossil fuel-based economy, reinventing itself as a hub for green buildings innovation and clean energy.

The former steel city has been switching over to LED street lights, retro-fitting municipal buildings for energy efficiency and developing district energy initiatives.

The city will also host the largest U.S. urban farm: 23 acres (9 hectares) on a site where low-income housing once stood.

“One of the key things we have recognized is that becoming greener also brings economic benefits,” said Grant Ervin, Pittsburgh’s chief resilience officer.

Founding UTA members include districts of Beijing and Shijiazhuang in China; Buffalo and Cincinnati in the United States; and Dortmund in Germany.
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An Australian museum has teamed up with computer giant International Business Machines to count the country’s native frog population, and they want amphibian enthusiasts to jump on board.

The Australian Museum and IBM say they developed the world’s first smartphone app especially designed to let users record and report frog calls, croaks and chirps — without disturbing them.

Australia has 240 named native species of frog, and the museum wants to use its FrogID app to identify what it believes are dozens more still ribbiting under the radar.

“One of the cool things about this is you can survey frogs just by listening,” said Jodi Rowley, the museum’s curator of amphibian and reptile conservation biology.

“It’s actually a lot more accurate than photos, and photos encourage people to handle or disturb frogs,” Rowley added. She noted that every frog species has a unique call.

While frog populations are in decline around the world, Australia’s frogs are especially vulnerable because of a combination of climate change, pollution, introduced species and urban development, the country’s Department of Environment and Energy says.

According to the Environment Protection and Biodiversity Conservation Act four frog varieties are extinct, five are critically endangered, 14 are endangered and a further 10 are considered vulnerable.

Scientists say the presence of frogs in an ecosystem is a sign of good environmental health, but the small amphibians are highly sensitive to changes in their habitat.

Rowley said she hopes campers, hikers and other serious nature lovers will help with the research, but she noted that even the humble backyard fishpond could provide valuable data.

“It might allow us to figure out which areas of suburbia are really good for frogs, why they are good and hopefully help create more frog friendly habitats in suburbia,” she said.

Rowley said amateurs who record previously unknown frog calls may even help discover a new type of frog or determine if any introduced species have gone unnoticed.

“All these things will help us — and help Australia — make sure that frogs don’t croak,” she said.
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The FBI has yet to gain access to data on Devin Kelley’s phone four days after the former airman killed 26 churchgoers in Texas in the deadliest mass shooting in the state’s history, Deputy Attorney General Rod Rosenstein said Thursday, blaming “warrant-proof encryption” for impeding criminal investigations.

The FBI’s San Antonio office sent Kelley’s encrypted phone to the bureau’s crime lab in Quantico, Virginia, earlier this week after agents were unable to unlock it, Christopher Combs, the special agent in charge of the FBI’s office in San Antonio, Texas, said Tuesday.

But Rosenstein, speaking at the BWI Business partnership organization in Maryland, said the FBI has been unable to access “the data inside because of encryption.”

“Nobody has a legitimate privacy interest in that phone,” Rosenstein said. “The suspect is deceased. Even if he were alive, it would be legal for police and prosecutors to find out what is in the phone.”

The FBI declined to say whether the bureau had been able to unlock the phone but unable to access its encrypted data.

Kelley killed 26 people and injured 20 others at a church in Sutherland Springs, Texas, on Sunday before turning the gun on himself.

The FBI has not identified the make or model of Kelley’s phone, but the Associated Press reported on Wednesday that it was an Apple iPhone.

Apple said on Wednesday that it “immediately” reached out to the FBI after “learning that investigators were trying to access a mobile phone.”

“We offered assistance and said we’d expedite our response to any legal process they send us,” Apple said in a statement.

Legal battle

Rosenstein said “strong encryption is good,” but he criticized technology companies for building devices and applications that make it difficult for law enforcement authorities even with a warrant to access encrypted data.

A 2016 legal dispute between the FBI and Apple over the bureau’s effort to gain access to the phone of San Bernardino mass shooter Syed Rizwan Farok fueled a national debate over privacy and public safety.

The FBI obtained a warrant to unlock the phone, but the data was encrypted and Apple refused to help the bureau gain access to the data.

The showdown ended after the FBI was able to open the device with the use of an unnamed third party.

FBI officials have long expressed frustration over increasingly sophisticated encryption technology that makes it harder for law enforcement to access devices and data.

In the first 11 months of the 2017 fiscal year, the FBI was unable to access the content of nearly 7,000 smartphones, more than half the total number of devices the bureau tried to access, FBI Director Christopher Wray said last week.

“And that’s a huge, huge problem,” Wray said. “It impacts investigations across the board — narcotics, human trafficking, counterterrorism, counterintelligence, gangs, organized crime and child exploitation.”
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