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Irish researchers use network analysis to help Brazilian police identify dark web paedophiles

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identify dark web paedophiles

A team of researchers from Ireland’s University of Limerick is helping police in Brazil disrupt the distribution of indecent images and videos of children on the dark web.

The group of mathematicians led by Dr Bruno da Cunha used network analysis to assess the effectiveness of Operation Darknet, a Brazilian Federal Police operation that targeted one of the largest dark web paedophile networks ever discovered.

The crackdown, which took place between 2014 and 2016, resulted in the identification and arrest of 182 users of the forum, 170 of whom were distributors, and the rescue of six children.

In research published in Nature’s Scientific Reports journal, Da Cunha and his team explain how effective the police operation was at identifying offenders.

While examining this, the researchers identified patterns that could help investigators determine which paedophile offenders to go after when probing similar dark web forums in the future.

In a statement, Dr Pádraig MacCarron, a postdoctoral researcher who worked on the analysis, commented: “Network analysis has previously been applied to drug trafficking networks and terrorist networks to identify structural weaknesses and key figures in these illicit networks.

“The dark web network in this study, however, was much more dense – as in there were more connections between users than normal – making it more difficult to breakdown using traditional network methods. It was found that the 60% of those core 766 distributors would need to be removed to completely fragment the network. This makes the network highly robust.”

The collaboration is believed to have been the first between a Brazilian law enforcement agency and Irish mathematicians.

Operation Darknet, which was launched simultaneously across 18 Brazilian states and the federal district of Brasilia, marked the first time investigators outside of the UK and America had been able to crack a dark web paedophile forum.

Suspects detained during the operation were reported at the time to include retired police officers, civil servants, prison guards and youth football club managers.

The indecent material posted on the site by users in Brazil was shared with paedophiles in countries including Portugal, Italy, Colombia, Mexico and Venezuela.

Speaking with Vice News when news of the site takedown first emerged, Rafael França, Coordinator of Operation Darknet, said: “This is the first time that the Brazilian police has done an operation like this, seeking targets in the darknet.”

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Oligarques russes et pétrole vénézuélien

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oligarques russes et vénézuéliens

Des oligarques russes et vénézuéliens sont accusés de blanchiment d’argent, de trafic de pétrole et de corruption

Le Tribunal fédéral de New York accuse sept personnes d’êtres responsables de contrebande d’essence et du blanchiment de dizaines de millions de dollars. Ces personnes sont aussi accusées d’avoir tenté d’acheter des technologies militaires états-uniennes sensibles. Parmi ce groupe, on trouve notamment des oligarques russes et vénézuéliens. Ces derniers s’organisaient notamment pour contourner les sanctions mises en place par les États-Unis. Ils passaient par des entreprises-écrans hongkongaises, des livraisons d’argent liquide massives, des pétroliers fantômes et l’utilisation de cryptomonnaies pour obscurcir leurs activités.

Le blanchiment d’argent des oligarques russes et vénézuéliens

Cette affaire vient souligner également l’importance des liens entre oligarques russes et leurs alliés vénézuéliens. Les deux pays étant interdit de participer au système financier occidental, les riches des deux pays s’entendent pour protéger leurs fortunes. Au cœur de cette conspiration, on trouve deux Russes : Yury Orekhov et Artem Uss. Le premier travaillait pour une grande entreprise d’aluminium approuvée par les États-Unis. Le deuxième est le fils d’un riche gouverneur allié du Kremlin. Ces derniers sont partenaires dans une entreprise d’équipements industriels allemande basée à Hambourg. Cette entreprise est accusée d’avoir joué un rôle important dans le contournement des sanctions imposées après l’invasion de la Crimée dès 2014. Les deux hommes ont été arrêtés, l’un en Italie et l’autre en Allemagne.

De l’autre côté, on trouve Juan Fernando Serrano, le PDG de la start-up Treseus, basée à Dubaï, en Italie et en Espagne. Les communications des trois hommes, interceptées par la police, illustrent leurs connexions avec des partenaires puissants. Serrano serait le contact pour des oligarques vénézuéliens, dont un proche du vice-président. Cette personne est aussi recherchée par les États-Unis pour corruption et blanchiment d’argent. Aucun des partenaires des trois hommes n’a pourtant été inquiété, leurs liens n’ayant pu être prouvés.

Argent liquide et sociétés-écrans

Le pétrole vénézuélien est ici au cœur de l’affaire. Ce dernier se vend en moyenne 40 % en dessous du prix du marché et doit suivre des circonvolutions compliquées pour être exporté. Il est par exemple impossible d’effectuer un simple transfert bancaire et l’argent doit donc trouver d’autres chemins. Les trois personnes sont par exemple accusées d’avoir acheté un pétrolier plein de pétrole vénézuélien pour la somme de 33 millions de dollars. Le paiement est passé par une entreprise de Dubaï, puis par des comptes-écrans à Hong Kong, en Australie et en Angleterre. Des documents ont aussi été falsifiés et la cargaison était censée être des petits pois et du riz. Cependant, l’essentiel des transactions semble être fait en liquide.

La discussion entre les trois hommes montre que des millions de dollars en liquide ont été déposés en personne à une banque de Moscou. Cette même banque était possédée par l’industrie pétrolière vénézuélienne. Elle a longtemps servi de lien principal pour les échanges entre les deux pays. Certains paiements discutés parlaient aussi d’effectuer des paiements simultanés en liquide à une banque du Panama puis un virement à Caracas. Enfin, les criminels semblent avoir une prédilection pour la cryptomonnaie Tethers. Celle-ci base sa valeur sur des monnaies stables comme le dollar. La complexité de ces transactions et les efforts mis en œuvre par ces criminels en col blanc rendent difficile de stopper les responsables, sans compter que ces derniers opèrent dans des pays qui les soutiennent.

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Crooked vendors exploiting flaw in eBay’s feedback system to con buyers into purchasing bogus and dangerous items

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crooked vendors exploiting flaw in eBay’s feedback system

Buyers on eBay are being duped into purchasing substandard and counterfeit products due to a flaw in the online auction platform’s seller feedback system, according to an investigation conducted by UK consumer group Which?

The watchdog found that dishonest vendors can take advantage of these flaws by linking positive reviews of genuine products manufactured by companies such as Apple and Samsung to fake and low-quality items.

Which? found that crooked sellers are able to link thousands of positive reviews to eBay listings they have nothing to do with.

The organisation discovered that real reviews can be associated with fake products that are potentially dangerous, such as counterfeit mobile phone chargers that can pose a fire risk.

Sellers are able to do this by using “product IDs” associated with genuine items when adding their products to eBay, subsequently benefitting from the positive reviews those items have attracted.

The system is intended to make the process of listing products on eBay quicker and easier by allowing sellers to pull information from similar items that have a linked product ID.

As part of its investigation, Which? purchased 20 bogus Apple and Samsung accessories such as chargers and USB cables that were supposed to be official and shared the same reviews as products manufactured by the two technology firms

Calling for online ecommerce platforms to be held accountable for flaws in their seller feedback systems that allow dishonest vendors to pull the wool over buyers’ eyes, Head of Home Products and Services at Which? Natalie Hitchins said: “Our investigation has uncovered yet another example of online reviews being manipulated to mislead people.

“eBay’s product review system is confusing for consumers and could even direct them towards counterfeit or dangerous products sold by unscrupulous sellers.

“Online reviews influence billions of pounds of consumer spending each year.

“The [UK Competition and Markets Authority] must now investigate how fake and misleading reviews are duping online shoppers, taking the strongest possible action against sites that fail to tackle the problem.”

Responding to the findings of Which?’s investigation eBay said in a statement: “The research does not fully consider that there are distinctions between product reviews (which provide buyers with a holistic review of the same product), and seller feedback (which can be used to see specific reviews of a seller’s performance and may reflect the item’s condition).”

Earlier this month, Bloomberg reported that US politicians had called on lawmakers to hold ecommerce companies such as eBay and Amazon to account if they fail to prevent third-party vendors selling counterfeit or substandard products on their platforms.

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Major ‘lover boy’ prostitution gang broken up by coalition of European law enforcement agencies

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A Romanian human trafficking and prostitution network that used the “lover boy” method to entrap young women before forcing them into sex work has been broken up a coalition of European law enforcement agencies.

The lover boy method, also known as the “Romeo pimp” method, involves young men seducing victims with the objective of coercing them into prostitution.

Lover boy traffickers groom their victims to believe they have entered into a serious romantic relationship before using emotional, psychological and sometimes physical abuse to intimidate them into working in the sex services industry.

Investigators from Spain, Romania, the Czech Republic and several other European nations were involved in the operation that resulted in the dismantling of the gang, which is said to have groomed and exploited at least 10 young women by forcing them to work as prostitutes.

The operation resulted in the arrest of 14 people in Romania and Spain, the safeguarding of 10 trafficking victims, and the confiscation of a number of items, including a quantity of cash, jewellery, expensive vehicles and several electronic devices.

In total, the agencies taking part in the effort raided 16 properties in the Czech Republic, Romania and Spain.

Having groomed their victims, Romanian members of the network would develop manipulative dependent relationships with the young women they targeted before forcing them into sex work.

Once under the traffickers’ control, victims would be abused and drugged before being sold onto other members of the network for as much as €6,000 ($6,632) each.

The women would then be moved between locations and countries on a regular basis as part of the gang’s efforts to avoid the attention of police.

Profits made by the network were laundered through the purchase of property, expensive jewellery and high-value cars.

Ongoing investigations into the network’s activities are focussed on the theory that it was working in cooperation with another gang.

Enquires have already resulted in the identification of more than 40 additional women who fell victim to the two criminal organisations.

In a statement, Europol said: “Europol facilitated the information exchange between the participating countries, provided coordination support and analysed operational information against Europol’s databases to give leads to investigators.

“Europol conducted a financial analysis based on the information provided which highlighted the extension of the criminal activity of the group and the presence and flow of illicit profits to other jurisdictions.”

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