domingo, agosto 23, 2026
domingo, agosto 16, 2026
La Policía Nacional detiene a un cibercriminal que usaba DeepFakes para obtener Certificados Digitales gracias a un Glitch
Figura 2: Técnicas de IA en ciberseguridad y su impacto en Deepfakes
Publicado por
Chema Alonso
a las
8:23 a. m.
0
comentarios
Etiquetas: AI, cibercrimen, ciberestafas, ciberfraude, DeepFake, DeepFakes, e-crime, Estafas, fraude, GenAI, IA, Identidad, Inteligencia Artificial, KYC
sábado, agosto 15, 2026
El "Trick" del comprobante del Bizum hecho con IA para "ratear" un pago a los colegas
Publicado por
Chema Alonso
a las
6:01 a. m.
0
comentarios
Etiquetas: AI, antifraude, bizum, Curiosidades, fraude, Gemini, GenAI, IA
jueves, mayo 21, 2026
FEDEX & Eurosender Portugal: The Story of a "Fraudulent" Service that became a Nightmare #FEDEX #Eurosender
If FedEx and Eurosender Portugal had an information system that blocked the issuance of invoices for services they cannot carry out, customers wouldn't end up in this mess. But above all, they wouldn't be issuing misleading invoices.
Let me explain it to you. Imagine you go to a parcel shipping company and tell them you want to send six bottles of wine. The company's agent tells you there is absolutely no problem and asks you to write down exactly what you want to send so they can generate the invoice. You write exactly what you said: that you want to send six bottles of wine. Then, after reading what you want to ship, the agent creates a proforma invoice providing the retail price for sending those six bottles of wine. You pay the invoice, they come and pack the bottles, you write on the box that it contains wine, and you walk away happy because your colleagues are going to love the Christmas gift you are sending them.
Well, as it turns out, the company later tells you that they cannot ship wine, that it is stated in their terms and conditions, and that you have to pick up your package. But of course, to take your package back home, you have to pay—on top of the shipping costs you already paid—the fees of a customs broker, plus €10 for every day the bottles you sent are kept in storage at customs. To top it all off, you don't even know, nor will they tell you, the exact date the package arrived.
This is the story that a friend and I are currently caught up in with FedEx and their partner Eurosender, and I am sharing it with you so you can avoid ever running into these kinds of problems, which are anything but fun.
I've just given you the summary, but now I'm going to walk you through it with dates, invoices, and conversations so you can see how these companies operate—and, of course, to see if I can get my package with my wine bottles back. While I'm at it, let's see if I can raise awareness among some executives at FedEx or the Portuguese regulator to prevent this from happening again.
It all started on Three Kings' Day (January 6th), when I asked my colleague to help me with this. I had previously shipped several individual bottles from Spain to Amsterdam, Belgium, and Germany without a single issue. However, to ship them from Portugal to the United Kingdom, we chose FedEx and their partner company, Eurosender.
First, we called them by phone, and they told us there was no problem, that they could handle the shipment, and that we just needed to fill out the details on the website and they would take care of everything—from pickup to delivery, backed by the FEDEX GUARANTEE. So, that's what we did. We filled out the details and accepted the terms, as you can see in this image of the Proforma Invoice from January 6th: "Yes, we certify that the information is correct." As you can clearly see, the description explicitly states it is wine.
Nobody is tricking anybody here. If there is an issue entering the UK or leaving Portugal, the company can easily flag it. Moreover, if they simply do not ship those types of products, they should detect it and cancel the order. It's that simple. But no, they reviewed the invoice, and happy as clam, they sent us the corresponding invoice for us to pay.
As you can see on the invoice, they are billing us to ship Reference Code: 734836-26, which, as shown, goes from Portugal to Great Britain. In other words, they are invoicing us to ship WINE from PT to GB. Everything seemed correct, which is exactly what we intended to do.
The nightmare began
Until they collected the money for the service, everything was smooth sailing. But on January 23rd, more than two weeks later, the worst customer service I have ever seen began with a message stating that the package was supposedly arriving back in Portugal and we needed to go through a customs clearance process for the goods.
As you can see, my friend received a message stating that the goods are coming to Portugal, and that to get them out, we have to pay taxes for bringing alcohol into Portugal plus administrative costs (duties), and that’s it. In that same communication, they also provided us with the ruling from the United Kingdom, where, as you can see, it states it is WINE and must be returned to its origin.
In other words, it turns out you cannot ship wine without a special export process, even if it is a gift. Perfect. Nobody had told us anything, which is what we expected from FedEx, being a world leader in parcel delivery. After a week of not having the details entirely clear, I kindly asked them to explain the process to me step by step—something they should have done before shipping the package in the first place.
As a result of this, they told us we had to pay, but they wouldn't clarify how much. And, above all, they couldn't tell us when the goods would actually be back in Portugal. In fact, the conversation was so vague that we didn't know if paying meant they would send it to GB or not, nor did we know if it had already returned. Then they told us it wasn't there yet.
When we stated that we wouldn't pay until they clarified the process—just to know whether they were going to ship it or not—they threatened to "return it." Return it where? We are supposed to be the destination it's being returned to, and all we want is for them to give us our package and forget about this mess.
When I told her that I didn't understand, that what she was saying made absolutely no sense, and asked her to please explain what was going on, she replied very rudely, saying that "it seems I am very interested in knowing the whole process," and that only the declaration was missing to proceed with the clearance process, after which I would finally get my package back.
In the end, we filled out the declaration they asked for—which was just a signed Word document stating it contains wine—thinking that with this, we would either be able to ship it or get it back. But it wasn't going to be that simple, as you can imagine.
After that, on February 11th, we asked our FedEx "Broker," and she told us she had no idea when our package would arrive, even though we had sent the requested declaration back on January 29th.
Suddenly, on February 19th, we received a message from FedEx UK stating that the deadline to return the goods they shipped from GB to PT was February 19th—meaning, the very day we received the message.
But the funniest part is that the next day, February 20th, we received a message from our FedEx Broker telling us that we needed to hire a broker.
To which, thoroughly surprised, I replied that we thought she was our broker, as indicated in the signature of every single communication we had with her from minute one.
But no, she told me that FedEx does not process those goods—the very goods they charged us for, and the sole reason we contacted them in the first place. To make matters more surprising, this person also works for the partner company and sometimes replied to us from Eurosender.
So, modern problems require modern solutions: instead of a broker, I have hired a lawyer. I am demanding the return of both the package and the money. To this, they replied on one hand that they would try to get it done, and on the other, that they have no intention of returning either the package or the money until we hire an external broker.
So right now, the package must be waiting for UK clearance to see if it enters the country or gets sent back to its origin in Portugal. It might just be traveling for eternity between Lisbon and London, all due to an infinite lack of professionalism and a misleading invoicing system that allows them to charge for services they will never perform.
I will keep you updated on this, because I am going to see this through to the very end. As you can imagine, the €200 that the bottles and shipping cost matter very little at this point in the chaos; what matters is knowing whether the law allows a company to have a system that bills and collects money for services it will not provide. I'll keep you posted.
Publicado por
Chema Alonso
a las
6:01 a. m.
0
comentarios
Etiquetas: antifraude, fraud, fraude, fraude online, personal
sábado, septiembre 06, 2025
Una Campaña de Smishing con SMS Spoofing usando a la Dirección General de Tráfico con la Operación Salida de Libro
- Un sitio de Phishing para mobile, con una típica URL de phishing.
- Habían hecho cloacking con el USER-Agent para evitar "curiosos" o "no provenientes del Smishing"
- Una campaña de envío masivo de SMS Smishing
- Habían utilizado SMS Spoofing para meterse en el hilo de DGT de los mensajes
- Habían enviado la campaña a finales de mes con el la urgencia del pago con descuento
- Habían puesto el motivo con algo que podría ser factible: Una multa el día 1 de Agosto.
- Habían conseguido saltar los filtros antiphishing de los navegadores. Apple Safari para iOS lo marca como caído, pero no como marcado.
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| Figura 8: Libro de Hacking iOS:iPhone & iPad (2ª Edicón) en 0xWord de Chema Alonso, Ioseba Palop, Pablo González y Alejandro Ramos entre otros. |
Publicado por
Chema Alonso
a las
12:07 p. m.
0
comentarios
Etiquetas: Android, antiphishing, cibercrimen, ciberestafas, Estafas, fraude, iOS, Iphone, Phishing, smishing, SMS
jueves, noviembre 14, 2024
Open Gateway: Cómo detectar a un ciberestafador que manipula el GPS con FakeGPS usando el API de Device Location Verification
En el presente artículo se quiere hablar del problema de la falsificación de la ubicación y las ciberestafas que se crean. Hay gran cantidad de aplicaciones y servicios que necesitan verificar la ubicación lo más cercana o real posible de un usuario para ofrecerle un catálogo de servicios. O algo más crítico, que alguien se haga pasar por ti, ya que ha extraído o robado tus credenciales y se hace pasar por ti desde una ubicación lejana como, por ejemplo, un país extranjero o una ciudad en la que no vives.
TERCERO: Ahora, en la siguiente imagen, se puede ver que (en este caso Google Maps) se obtiene la ubicación de Málaga. De esta forma si la aplicación hace restricción por ubicación para evitar algo se “bypassea” de forma sencilla por el atacante.
Esto debe ser tenido en cuenta, ya que no podemos fiarnos de dicha ubicación GPS, ya que puede ser modificada y evitar dicha restricción.
CUARTO: Ahora, con la API de Device Location Verification podemos acceder a información real sobre la ubicación, en un radio, dónde se encuentra el dispositivo, y verificar si de verdad se encuentra donde dice que se encuentra.
En otras palabras, lo que nos decía la aplicación anterior que había sido engañada con FakeGPS quedaría invalidado, ya que Device Location Verification nos indica que no se encuentra en Málaga. Para saberlo debemos ir validando diferentes radios que puedan cubrir varias zonas. El usuario tiene un consentimiento explícito en el uso de la API.
El ejemplo anterior, con un código en Python, se puede ver cómo se accede a Latitud y Longitud del GPS y luego se verifica con Device Location Verification para detectar el fraude. Además de ese API, Open Gateway tiene la API de Device Status con la que se puede validar si el número se encuentran en Roaming o no. Esto es interesante, ya que permite también sumarle una capa extra de seguridad para identificar que no se encuentra fuera del país.
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| Contactar con Pablo González |
Publicado por
Chema Alonso
a las
4:01 a. m.
0
comentarios
Etiquetas: antifraude, API, ciberestafas, fraude, GPS, GSMA, Open Gateway, OpenGateway, Telefónica
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