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Questions tagged [sms]

Short message (or messaging) service, a system that enables cellular phone users to send and receive text messages.

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What is "JavaGhost - Mass Twilio Checker"?

Over the past week, the account credentials for my organization's Twilio account were stolen and used to send ~10,000 fraudulent SMS messages claiming to be from a major bank. The passwords have all ...
Moshe Katz's user avatar
  • 1,370
2 votes
0 answers
125 views

Receiving phishing text messages

I get a phishing messages on SMS every now and then. I'm not sure if it's from anyone that knows me. What information can I get about the sender of the SMS?
Elec Hill's user avatar
2 votes
0 answers
145 views

How can I go about securing services that require SMS tokens as backups?

I use 2FA on all services that support it. I generate backup codes and store them in a secure encrypted location. Most services unfortunately require a SMS backup, which represents a security issue as ...
Steve Rukuts's user avatar
2 votes
0 answers
166 views

Could an attacker delete messages using an MMS exploit?

My SMS messages are getting deleted. What I noticed is, that some number keeps sending me MMS messages, mostly pictures. Yes, I had the "accept MMS automatically" turned on my Samsung device to ON. ...
balex's user avatar
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1 vote
0 answers
232 views

I'm receiving text messages that my family didn't send

Lately I've been receiving text messages from family members that they did not send. All 4 family members and I are a part of the SMS group where we send and receive messages related to our family. ...
MRPA67's user avatar
  • 11
1 vote
0 answers
245 views

How spammers are abusing 2fa SMS in web apps?

My webapp has an SMS 2FA option. When someone enrolls, it sends an SMS to the number specified by the user with hard coded text that contains a token that the user needs to then enter in the web app ...
Michael's user avatar
  • 223
1 vote
1 answer
263 views

Multiple SMS activation codes received by error

For several days now I am receiving activation codes by SMS that look like this: Your ToYou verification code is 8058 Some are from ToYou, that seems to be a delivery service, others are from similar ...
The Coder's user avatar
  • 111
1 vote
0 answers
167 views

A message sent to your phone to erase another message

After giving a new credit card to a client some banks send its PIN code with an SMS. Later they send another SMS that's only purpose is to erase the SMS with the PIN from user's phone. Does this trick ...
lim-lim's user avatar
  • 29
1 vote
0 answers
205 views

Cell phone receiving text messages between an acquaintance and his girlfriend

An acquaintance was staying with us a short time ago and I let him use my cell phone to text his girlfriend and listen to music. A week ago he acquired a cell phone of his own. Completely different ...
Prof_hippie's user avatar
1 vote
0 answers
161 views

Phone number stolen. What to do?

It seems a friend of mine got his phone number stolen. Someone got access to his Facebook account (where they tried to post ad campaigns) and to his WhatsApp account. The Facebook security page said ...
Anton's user avatar
  • 11
1 vote
0 answers
168 views

Safely Display Card PIN

We are currently sending the card PIN via SMS. We do not store them in any way, neither do we have the possibility to change it. The only way to change it is for the customer to go to an ATM and ...
eversor's user avatar
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1 vote
0 answers
410 views

Strange inbound MMS messages

We received some strange inbound MMS messages on our Twilio account today. Our account was not compromised, as there are no suspicious outbound messages sent from our number via Twilio. We first ...
Ben Morgan's user avatar
1 vote
0 answers
136 views

Is it possible for old text messages to be used in an SMS spoofing attempt?

Background The company I work for maintains an application that allows users to subscribe to notifications via SMS or email. SMS messages are sent to the user's SMS gateway as an email. The Issue ...
algernon's user avatar
1 vote
0 answers
348 views

Are my SMS messages being intercepted? Or is this some kind of issue with the app itself?

When getting verification codes, I've been getting weird messages, such as: YoUR siGnaL veRiFICATioN c(O(D(E(: ***-*** YOUR SIgNal VERiFICAtION c)O)D)E): ***-*** yoUR siGnaL veRificATiON ...
simplegamer's user avatar
1 vote
0 answers
363 views

PDU: SMS-DELIVER direct from a GSM Modem

My understanding of the SMS-DELIVER/SMS-SUBMIT is that when Bob wants to send a text on the GSM the following happens... Bob submits a request to send a short message to a short message service ...
otacat's user avatar
  • 11
1 vote
0 answers
411 views

Can someone trace the source of a text msg without a phone number, only a four digit code instead?

I am receiving phishing texts from someone claiming to be from Chase Bank. There is no return phone number at the top, only a four digit number instead. The police tell me that this text (which ...
Tuesday Afternoon's user avatar
0 votes
0 answers
66 views

How to make SMS-based 2FA safer?

This is a problem that many of us face: A surprising number of financial institutions' websites offer additional authentication only via SMS and/or phone call. But I will refer to my situation ...
NotAnAccountant's user avatar
0 votes
1 answer
83 views

Detecting SMS spoofing when there is multiple routing

How can SMS spoofing be detected? I know we can find it by message centre, but what if in the case of multiple routing?
Gayatri Kandula's user avatar
0 votes
1 answer
461 views

Would a spoofed SMS message show up in the same chat history as a legitimate SMS?

I received an odd SMS message from xfinity earlier. The message looks real, and the link they provided is real, but they said I ordered a movie through their service, which I did not. I am wondering ...
Zaku's user avatar
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0 votes
0 answers
155 views

Is ISP sending WiFi password in plain text to phone necessarily a bad sign?

The new router I was given by my internet and phone provider can only be configured via their website. I logged in and went to the page where you can set things like the SSID and password for the WiFi ...
insecure's user avatar
0 votes
0 answers
402 views

Every time I log into Facebook, the SMS based 2FA code appears to get intercepted (UK)

Historically, whenever I logged in I got a standard looking text from "Facebook" stating my login code. As of this morning, when I attempt to log in, I get a fake looking text from a random ...
ReflexReaction's user avatar
0 votes
0 answers
143 views

Would removing a SIM disable the phone number and block text scams

I have a PAYG basic Nokia mobile, not a smartphone, and have noticed on my EE A/c there is a transaction for a Text Service with a charge of 15p, appearing every so often, which is nothing to do with ...
user avatar
0 votes
0 answers
122 views

Is there some way to "fully delete" received and sent SMS messages (and any other "deleted" data") on my cellphone?

I have a cheap cellphone bought about ten years ago. It has a physical SIM card. I have in-phone "deleted" all sent and received messages, but very strongly suspect that these are still ...
C Pose's user avatar
  • 1
0 votes
0 answers
183 views

Blockchain 2FA by sms (wallet code) secure (hack)?

To keep a long story short, I got hacked on my PC by downloading and executing a wrong file. Programs as InterVPN, Cryptobot and HVNC (told by the hacker via google chat) were installed. My accounts (...
BLE's user avatar
  • 11
0 votes
0 answers
133 views

Mysteriously encoded SMSs from Ethiopia. Is it sinister?

Thought i'd try my luck here as i've not yielded any results in my Googling. I have received numerous SMSs from +251 (Ethiopia) that look like the following. I'm not sure if its a strangely encoded ...
Max's user avatar
  • 151
-1 votes
1 answer
236 views

Is a 2fa app really better than SMS 2fa with sim-pin?

A sim-pin safeguards against sim-swapping, which is the primary advantage of using an authenticator app instead of SMS, is this not so?
Ganon's user avatar
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