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2023-09-27 12:51:29 | Les lacunes de sécurité et de confidentialité SMS montrent clairement que les utilisateurs ont besoin d'une mise à niveau de messagerie SMS Security & Privacy Gaps Make It Clear Users Need a Messaging Upgrade (lien direct) |
Posted by Eugene Liderman and Roger Piqueras Jover
SMS texting is frozen in time.
People still use and rely on trillions of SMS texts each year to exchange messages with friends, share family photos, and copy two-factor authentication codes to access sensitive data in their bank accounts. It\'s hard to believe that at a time where technologies like AI are transforming our world, a forty-year old mobile messaging standard is still so prevalent.
Like any forty-year-old technology, SMS is antiquated compared to its modern counterparts. That\'s especially concerning when it comes to security.
The World Has Changed, But SMS Hasn\'t Changed With It
According to a recent whitepaper from Dekra, a safety certifications and testing lab, the security shortcomings of SMS can notably lead to:
SMS Interception: Attackers can intercept SMS messages by exploiting vulnerabilities in mobile carrier networks. This can allow them to read the contents of SMS messages, including sensitive information such as two-factor authentication codes, passwords, and credit card numbers due to the lack of encryption offered by SMS.
SMS Spoofing: Attackers can spoof SMS messages to launch phishing attacks to make it appear as if they are from a legitimate sender. This can be used to trick users into clicking on malicious links or revealing sensitive information. And because carrier networks have independently developed their approaches to deploying SMS texts over the years, the inability for carriers to exchange reputation signals to help identify fraudulent messages has made it tough to detect spoofed senders distributing potentially malicious messages.
These findings add to the well-established facts about SMS\' weaknesses, lack of encryption chief among them.
Dekra also compared SMS against a modern secure messaging protocol and found it lacked any built-in security functionality. According to Dekra, SMS users can\'t answer \'yes\' to any of the following basic security questions:
Confidentiality: Can I trust that no one else can read my SMSs?
Integrity: Can I trust that the content of the SMS that I receive is not modified?
Authentication: Can I trust the identity of the sender of the SMS that I receive?
But this isn\'t just theoretical: cybercriminals have also caught on to the lack of security protections SMS provides and have repeatedly exploited its weakness. Both novice hackers and advanced threat actor groups (such as UNC3944 / Scattered Spider and APT41 investigated by Mandiant, part of Google Cloud) leverage the security deficiencies in SMS to launch different |
Vulnerability Threat Studies | APT 41 | ★★★ |
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