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The Cambridge Analytica scandal is far from over. New explosive details leaked by a whistleblower shows that the extent of the rot is far deeper than previously thought.

An anonymous Twitter account, @HindsightFiles, has started releasing the documents, apparently on behalf of Brittany Kaiser, a former employee of the now defunct British data analytics and consulting company Cambridge Analytica.

"Democracies around the world are being auctioned to the highest bidder. We release the documents that explain how," reads the biography of the @HindsightFiles.

The document will reveal previously unreleased emails, project plans, case studies, negotiations and more spanning over 60 countries.

"Over the past two years I have given evidence to investigators, journalists and academics to analyse what happened at Cambridge Analytica, and how our data was used to influence democracies around the world. In the name of shedding light on these dark practices, I am releasing documents and emails in full for the public good," Kaiser, who worked with Cambridge Analytica from 2014 to 208, was quoted as saying.

"I do this to strengthen the case for data rights and enforcement of our electoral laws online globally. We should all be seeking more ethical digital future for ourselves and our children," added Kaiser who starred in the Oscar-shortlisted Netflix documentary "The Great Hack".

The details released so far includes links to material on the firm's activities in Malaysia, Kenya, Brazil and Iran, an addition to the John Bolton archive.

Over the next months, more than 100,000 documents relating to work in 68 countries are set to be released, according to a report in The Guardian.

More than one and a half year after the Cambridge Analytica scandal first became public, US regulators last month said that the now-defunct British data analytics and consulting company engaged in deceptive practices to harvest personal information from tens of millions of Facebook users for voter profiling and targeting.

According to Kaiser, the Facebook data scandal was part of a much bigger global operation designed to manipulate people in collaboration with governments, intelligence agencies, commercial companies and political campaigns.

The unpublished documents contain material that suggests the firm collaborated with a political party in Ukraine in 2017 even while under investigation as part of Robert Mueller's investigation into Russian interference in the 2016 US presidential election, said The Guardian report.

"There are emails between these major Trump donors discussing ways of obscuring the source of their donations through a series of different financial vehicles. These documents expose the entire dark money machinery behind US politics," Kaiser was quoted as saying.

Similar tactics were deployed in other countries that Cambridge Analytica operated in, including Britain, she claimed.

The files released by Kaiser suggest that Cambridge Analytica offered to help United Malays National Organisation (Umno), the party of Malaysia's Former Prime Minister Najib Razak, to influence the voting of 40 parliamentary constituencies in the 14th General Election (GE14) in 2013.

Umno, according to the leaks, requested the company to prepare a proposal to regain 13 seats, The South China Morning Post reported on Saturday.

In 2018, Razak claimed that he had never engaged Cambridge Analytica in any way.

Kabul, Jun 12: A blast in a mosque during Friday prayers in the western part of capital Kabul has killed at least four people and wounded many more, Afghanistan's interior ministry said.

"Explosives placed inside the Sher Shah Suri Mosque exploded during Friday prayers," said a statement issued by the ministry, which added that the mosque's prayer leader Mofleh Frotan was among those killed.

Interior ministry spokesman Tariq Arian said police have cordoned off the area and helped move the wounded to ambulances and nearby hospitals.

No group immediately claimed responsibility for the attack but a mosque attack earlier this month was claimed by an ISIL (or ISIS) group affiliate, headquartered in eastern Afghanistan's Nangarhar province.

"Interestingly, every time you have the peace process gaining some momentum and pace, you have these kinds of attacks in the country," Habib Wardak, a national security analyst based in Kabul, told Al Jazeera.

"The Islamic State group claimed responsibility for the attack that happened last week on a mosque in Kabul, so despite the fact that you have these news and press conference from the government that they have eliminated ISIL, how can they conduct such sophisticated operations?"

Friday's blast had parallels to one earlier this month, when an explosion tore apart a famous Kabul mosque and led to the death of renowned Afghan cleric Maulvi Ayaz Niazi.

"In this attack, the imam seems to be the target, not the rest of the crowd. These are the imams who have supported the peace process with the Taliban movement," Wardak said.

"The other political aspect for these kinds of attacks is that there are peace spoilers trying to convey a message that peace with the Taliban will not eradicate violence in the country because you have ISIL."

Violence has spiked in recent weeks in Afghanistan with most of the attacks claimed by the ISIL affiliate.

The United States blamed the armed group for a horrific attack last month on a maternity hospital in the capital that killed 24 people, including two infants and several new mothers.

The ISIL affiliate also took responsibility for an attack on a bus carrying journalists in Kabul on May 30, killing two.

It also claimed credit for an attack on the funeral of a strongman loyal to the government last month that killed 35 people.

Meanwhile, the US is attempting to broker peace talks between the Afghan government and the Taliban to end 18 years of war.

Washington's peace envoy Zalmay Khalilzad was in the region earlier this week trying to resuscitate a US peace deal with the Taliban.

The peace deal signed in February calls for the withdrawal of the US and NATO troops from Afghanistan in return for a commitment by the Taliban to not launch attacks on the US or its allies.

Jun 13: Requiring the wearing of masks to prevent the spread of the novel coronavirus in areas at the epicenter of the global pandemic may have prevented tens of thousands of infections, a new study suggests.

Mask-wearing is even more important for preventing the virus' spread and the sometimes deadly COVID-19 illness it causes than social distancing and stay-at-home orders, researchers said, in the study published in PNAS: The Proceedings of the National Academy of Sciences of the USA.

Infection trends shifted dramatically when mask-wearing rules were implemented on April 6 in northern Italy and April 17 in New York City - at the time among the hardest hit areas of the world by the health crisis - the study found.

"This protective measure alone significantly reduced the number of infections, that is, by over 78,000 in Italy from April 6 to May 9 and over 66,000 in New York City from April 17 to May 9," researchers calculated.

When mask-wearing went into effect in New York, the daily new infection rate fell by about 3% per day, researchers said. In the rest of the country, daily new infections continued to increase.

Direct contact precautions - social distancing, quarantine and isolation, and hand sanitizing - were all in place before mask-wearing rules went into effect in Italy and New York City. But they only help minimize virus transmission by direct contact, while face covering helps prevent airborne transmission, the researchers say.

"The unique function of face covering to block atomization and inhalation of virus-bearing aerosols accounts for the significantly reduced infections," they said. That would indicate "that airborne transmission of COVID-19 represents the dominant route for infection."

The U.S. Center for Disease Control and Prevention on Friday urged organizers of large gatherings that involve "shouting, chanting or singing to strongly encourage the use of cloth face coverings to lower the risk of spreading the coronavirus."