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Anonymous SIM card scam

5/31/2015

14 Comments

 
Anonymous SIM cards: are really anonymous?

Well, the list of so-called benefits of using an anonymous SIM card is apparently quite long, as the scammers pretend:
- Calls can be made or received from anywhere in the world. Full list of countries (it's not every single country included, we just let you know) is offered to the buyer only after payment. Which obviously is an unfair approach.
- No deposits.
- No ID required.
- Without full written requests.
- No monthly bills.
- Additional SIM cards available at the same price.
- Online top-up at anytime.

All above mentioned are true. But not these "advantages" consists the scam.
These are actually the standard features of a prepaid SIM card. In fact, anonymous SIM cards are nothing but prepaid SIM cards purchased from countries where you do not need an ID to purchase a SIM and international roaming charges are relatively low. In general these SIM cards come from Asian countries and some EU countries including Belgium, Denmark, Cyprus, Estonia, Latvia, Czech Republic, Finland, Lithuania, Romania, .Bulgaria, Andorra, Monaco, Belarus etc.
This business has a relatively success only in countries that can not be purchased a prepaid SIM card without showing an photo ID. Not just scammers but even serious and reputable companies rely on such scams, unfortunately.

Anonymous SIM cards are really anonymous? The short answer: are not at all anonymous.
Extended answer: a prepaid SIM card is anonymous only to the common people who can not find easy the SIM user details. A simple phone number will not lead to user identification unless he will make serious mistakes or if it does not intend to protect his identity. If the SIM card is used for a sufficiently long period (months or years), there is a possibility that the user identity to be determined by using simple investigative techniques, which are readily available to every detective or skilled people.

But when it comes to the law enforcement agencies that will want to find a prepaid ("anonymous") SIM card user's identity, the situation changes radically: no chance to hide your identity. Whether using the network operator or through lawful interception systems, finding the identity of any prepaid SIM user is a matter of a few days or even hours.

What exactly can not hide an  "anonymous" SIM card?

- Can not hide the phone location and default user. The explanation is simple: to be used (to make any calls), any SIM card have to register on the local GSM network, no matter the country and carrier that issued the SIM. This means that the SIM card will be permanently connected to the GSM network. The operator can quickly perform localization procedures (GSM triangulation), at the law enforcement request. In urban locations the location tracking accuracy is 50 meters or less. Moreover, there are plenty of GSM interceptors that are having location tracking capabilities.
If the situation requires, the suspect can be identified, located and arrested based on location tracking.

- Voice calls, SMS and data traffic cannot be hidden. When an anonymous SIM card user will attract the law enforcement agencies attention, that particular user will not be anonymous anymore: they will know the call list, voice calls content, text content of SMS, persons with whom he communicated, will would make a profile of the target user based on its habits an communications pattern, etc. And all this after a few days of using the "anonymous" SIM card.
Depending on performance of GSM interception systems  and network equipment, law enforcement agencies and  the carrier will have access to various data: target GPS location (more accurate than GSM location), phone book, data traffic etc.

At this point you can draw a conclusion: an anonymous SIM card is not at all anonymous. The fact that the average person can not find information about the prepaid SIM user, does not make that SIM to be anonymous. Without hiding around the bush any user of such a SIM card is hoping not only to remain anonymous to the average Joe, but also to stay anonymous to the law enforcement agencies. Is that possible? Not at all.
Basically, selling prepaid SIM cards pretending to be anonymous SIM cards is just another scam, and resembles (in a funny way) selling a nanny cam as a spy cam. Which you have to agree, is hilarious.
untraceable sim card scam
Untraceable SIM card scam, on antitap.com
More blog entries about the scams on antitap.com, imeichanger.com and gsmsecret.com:
  1. Another seller, busted: fake stealth phones for sale
  2. The truth about antitap.com, imeichanger.com and secretgsm.com
  3. A comprehensive view on stealth phones scam
anonymous sim card scam
14 Comments
Pigreco san
3/2/2019 06:07:28 am

Hi good post. This for call but if I use a Sim prepayd card only for connect to internet via proxy or VPN it possible for police to get me?

Reply
Anders link
3/2/2019 10:40:26 pm

As long as you are using carrier servers (which you have to, when using a prepay SIM), law enforcement have access to all data that is passing trough servers, based on a judge warrant. Simple as that.
Proxy and VPN will protect you only against hackers.

Reply
Thomas
1/7/2021 01:13:42 pm

Ever heard of TOR? Every piece of anonymity is only part of the solution. TOR + VPN + anon SIM can protect you (from everything but yourself)

Sunnehnl
1/29/2021 12:06:31 pm

I think the question is if never have my phone connected to a tower but only use the phone number to validate a whatsapp for example and not use the phone for anything else. Maybe only through wifi and VPN would you than be safe?

Anders link
3/31/2021 08:21:00 pm

@Thomas:

After this reading you should change your opinion regarding TOR, VPN and anonymous SIM cards: https://www.stealth-phones.com/s/stories

Eli Jenkins
8/9/2020 12:56:33 am

What about using a prepaid sim for data only in a Chinese wireless camera. Will the data streamed to the encrypted cloud be found or lead back to whomever set the camera up?

Reply
Anders link
4/1/2021 10:17:03 pm

Any SIM (no matter if voice/SMS or data only) need a cell tower to connect to a mobile network. If not your device is vulnerable, then the network itself is pretty vulnerable to remote exploits and attacks such SS7 attack, used both by hackers and govt. One way or another, someone will get what he want, with proper hardware, knowledge and connections. Have a look here: https://www.stealth-phones.com/govt-grade-spyware

Reply
Anders link
1/29/2021 01:22:37 pm

@Sunnehnl:
Your cell phone has never been connected to a cell tower? Well, think again:
Once you power up your cell phone (no matter type, brand or which network is using), there is no escape: your cell phone will be "seen" by at least 6 surrounding cell towers, even if you didn't inserted a SIM card. Simple as that. Once seen by any cell tower, your phone IMEI (and eventually IMSI of your SIM if you have inserted a SIM) will be collected and stored on mobile network servers (HLR-VLR level) for further use. From there, IMEI and IMSI can be also collected and analyzed by law enforcement.
Just make a simple experiment: power up your cell phone and place a call to any emergency number (112, 991, etc.). Your phone call will go trough even if you didn't inserted any SIM card on your cell phone. This is because this is the way that any cell phone is built.
Now, since you can make a call from your cell phone, that means your cell phone has been registered (using its unique IMEI) to a mobile network. Hence, your phone IMEI, phone location and route are not a secret for network providers and law enforcement, even if you didn't use a SIM card. Simple as that.
I hope that I have enlighten you regarding this matter. And I also hope that you have understand that so called "Anonymous" SIM cards are only a gross scam, the same as "secure" cell phones that pretend using only data connection in order to send/receive encrypted messages and calls. Once you power up the phone, will be "seen" by all surrounding cell towers and at least your phone IMEI will be collected and stored.
Cheers,
Anders.

Reply
Brian Rupe
2/16/2021 08:32:08 am

This says different Anders. what do you think?

https://www.endoacustica.com/anonymous-sim-card.php

Reply
Anders link
3/31/2021 07:55:58 pm

Hi Brian.
I only have a comment: https://www.stealth-phones.com/s/stories/beware-anonymous-sim-scams-2

Reply
Whatsitmatter
9/22/2021 02:20:17 pm

Does it matter if it’s not anonymous if you only use it occasionally and then turn it off? Like say I turned on a phone with a sim not registered in my name. I get seen by 6 cell towers, do what I gotta do and then turn it off. My sim and dumb-phone have been seen, but they still don’t know who it is? Surely I am still anonymous then?

Reply
stealth-phones-guide link
4/9/2022 02:08:45 pm

Hi Whatsitmatter.
There will remain on carrier servers consistent traces every time when you power up your cell phone: geo-location, IMEI/IMSI pair, phone calls and SMS data, etc.
If a cell tower can "see" you, then a GSM Interceptor can "see" you. In matter of minutes, a GSM Interceptor can tamper and manipulate a cell phone to extract sensitive data as call history, SMS texts, agenda, photos, phone book, etc.
Please do not make confusion between hackers and law enforcement. Maybe a hacker cannot find out who you are, but law enforcement will do. Because they have enough technical and human resources to do that, along with plenty of intelligence methods. They don't simply stay and listen a cell phone. They are paid (by you, as citizen and tax payer) to find you and finish the case. And they do that successfully, trust me.
If you turn on the phone for few seconds and immediately turn off, then no reason to have that cell phone on you, since no communications are made.
Cheers,
Anders

Reply
Giorgio
4/9/2022 02:44:40 am

Hi, great article for newbies like me to know the real limits of an anonymous sim card, apparently more limited than I expected...
I wanted to know for example if an anonymous sim installed in a device such as a fixed camera trap in a permanent place that sends messages to a telephone (also with anonymous sim card) connected to a siren alarm system and permanently fixed in the same place or area can be by any chance connected to me personally in case the camera trap one day would be discovered, by someone... From what I read in your article there is no way that they can connect me to the camera trap or to the phone (also equipped with an anonymous sim) which will always be in the vicinity of the camera trap, it is correct ? Because there will be no audio recordings, no movements of the two sim cards (both that of the phone and that of the camera trap), nor of other calls other than those between the camera trap and the mobile phone that will be always near and in the same exact area.
Sorry for my bad english and thanks in advance for your kind reply! :)

Reply
stealth-phones-guide link
4/9/2022 01:50:03 pm

Hi Giorgio.

If that camera and cell phone will be discovered and removed by a private person, there is no way to find out who installed that trap camera. Even a private investigator have no technical resources to find you, unless the camera and cell phone are not removed and Police will open a case. You have to admit that law enforcement and intelligence agencies are anything but not stupid. In this last case yes, the system you have used can lead to you in the end, if you have no solid counter-intelligence knowledge and skills. This is how will work:

Both camera and cell phone using "anonymous" SIM cards will not move. But you do (with your personal cell phone on you). So, there will be enough few days of GSM surveillance on the area where trap camera and paired cell phone are installed. A GSM Interceptor will collect all IMEI/IMSI pairs that will pop up on that specific area. Since you will be there from time to time to collect/download captured images or movies, it is trivial to find IMEI/IMSI pair used by your personal cell phone, which will lead directly to you in no time, no matter if contract or prepaid SIM card is used on your personal cell phone. Moreover, by cell dump techniques, your visits to trap camera will be available also from the past (since the moment you have installed the camera), and not only for the future (from the moment that GSM surveillance starts).
You can avoid this for a while if you have no cell phone on you, when approaching the area for image collecting. But if a surveillance van will wait for you in the area, you can be busted.

Cheers,
Anders

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