efani – A Comprehensive Guide on Silent SMS Denial of Service (DoS) Attack

When delivered to a mobile handset, silent messages, also known as Silent SMS or Stealth SMS “stealth ping”, or “Short Message Type 0”, are not indicated on the display or by an acoustic alert signal. This guide will concentrate on the technicalities of sending a silent SMS, as well as sending multiple incessant silent SMSs to perform a silent SMS denial of service (DoS) attack. These silent messages are increasingly being sent not only to perform DoS attacks but also to force the constant update of users’ or victims’ location (tracking) information.

What is Silent SMS or Flash SMS?

Silent SMS was originally intended to allow operators to detect whether a mobile phone was turned on and test the network without informing the user. They have, however, proven useful in the tracking down of suspects by police in a number of countries.

Using the GSM Network, silent SMS can pinpoint the exact location of a mobile phone. We can find a user by identifying the three antennas closest to him and then triangulating the distance based on the time it takes for a signal to return. When a person moves, their phone’s location is updated; however, the information is not updated immediately. The location of the mobile is instantly updated when a Silent SMS is sent. This is extremely useful because it allows you to locate someone at a specific time based on the airwaves.

ICYMI – In cellular communication networks, the SS7 (Signaling System No. 7) protocols are critical. Unfortunately, SS7 has a number of flaws that a malicious actor can exploit to launch attacks. Location tracking, SMS interception, and other types of signaling attacks are significant examples of these.

[TIP: EFANI’s Black Seal Protection against such hacks such as SS7, location tracking, DDoS, Silent SMS, IMSI Catchers and so on]

The Silent SMS Denial of Service (DoS) attack is one of the more intriguing attacks. A typical DoS attack floods a network with excessive traffic, rendering its computer resources inaccessible to users. The same concept applies to mobile devices.

Source: Croft, N. J., & Olivier, M. S. (2007). A silent SMS denial of service (DoS) attack

The Silent SMS Denial of Service (DoS) attack is one of the more intriguing attacks. A typical DoS attack floods a network with excessive traffic, rendering its computer resources inaccessible to users. The same concept applies to mobile devices. Without the victim’s knowledge, a device can be flooded with silent SMS messages. Texts swamping the victim’s device will utilize the battery abnormally while preventing the device from receiving calls.

Targets Location Tracking

Malefactors who exploit SS7 protocol vulnerabilities frequently target location information and tracking. A silent SMS could be sent to the target mobile device to force it to update the existing (normally the closest) serving base station onto the mobile network in order to identify the target’s location.

The device user will not be notified if a message is received, as in a Silent SMS DoS attack. However, unlike a DoS attack, there are no visible signs that an attack is taking place. As a result, the victim is completely unaware that they are being followed.

SIM cards are also a major target because they use Wireless Internet Browsers (WIB), that are not adequately secured. Telecommunications companies use Over the Air (OTA) technology to communicate with WIBs in order to manage SIM cards.

Evil people can essentially send a silent SMS containing WIB instructions. The instructions are executed once they have been received on the victim’s device. At this point, the malefactor has several options, including obtaining location data, initiating a call, sending an SMS, or even launching a web browser with a particular URL.

The Culprit: Who is behind the Silent SMS attacks?

Though it has reportedly been used by authorities and governments in the past, the decreasing costs of equipment and broadband access have made this attack vector accessible to malefactors with little technical knowledge.

Why are silent SMS attacks so risky?

Cellular attacks that take advantage of the SS7 protocol are nothing new. However, due to the covert nature of silent SMS attacks, it is difficult to detect them before it is too late. As a result, silent SMS attacks are a compliance nightmare. A breach cannot be detected and, as a result, cannot be reported in accordance with the law. Invisible DoS attacks, OTA malware, and unauthorized location tracking are all dangerous, if not disastrous.

It is incumbent to bring this to readers’ attention that not only SS7 attacks are next to impossible to detect when they take place, but they also leave practically no traces in terms of forensics. The forensic investigator has little to no data to extract and analyze from the victim’s device.

This is, of course, unless the victim has an application on their mobile devices that is specifically supposed to detect and triangulate silent SMS.

The investigator may be able to examine the traffic on the cellular network and possibly detect the unprecedented number of messages sent. Sadly, the investigator must have the victim’s mobile in hand to confirm a real-time attack.

Who is vulnerable to a Silent SMS attack?

It is not critical for most users to have their location tracked or to lose wireless access due to a DoS attack. Attackers are most likely to target executives, VIPs, celebrities, crypto enthusiasts, and governments.

Attacks will almost certainly result in significant financial losses for enterprises, whereas national defense is at stake for governments. They must also consider the possible harm that could be accomplished if an attacker is able to install malware on the device by exploiting WIB vulnerabilities on SIM cards.

The much-needed protection

The one and only effective way to identify and prevent such attack vectors is at the network level (speaking of mobile here). This necessitates the use of EFANI’s Black Seal Protection aimed at “plugging” the security vulnerabilities left by the primitive SS7 protocol, which is still in use presently.

Currently, most of the defense against silent SMS DoS attacks is left to individuals (going through such emotional stress) and cybersecurity professionals in companies, who (unfortunately) have little or no tools to do so. For telecom companies since this pandemic means taking a global approach to SS7 protection. It thus necessitates the implementation of appropriate safeguards and security mechanisms to prevent their networks and registered user devices from such hacks.

Unfortunately, traditional cell phone companies are not doing much to protect you. But it is not all bad news, there is a cellular phone company named efani that has stepped up and made it more difficult for hackers. efani offers the nation’s most secure mobile service and claims a 100% success rate.

The SAFE plan comes with a 100% money-back guarantee for 60-days. and includes:

*11 Layer Proprietary Military Grade Security
*Unlimited Call/Text/Data within US/Canada & Mexico
*5G Access on America’s Largest & Fastest Network
*Wi-Fi Calling
*Keep your Current Number
*International Data-Roaming
*$5 Million Insurance Coverage (includes: Crypto, Banking, Brokerage & Other Losses)

Try efani RISK-FREE for 60 days with a 100% Money Back Guarantee!

Take action NOW and secure your assets, privacy, and your phone by calling toll free 1-833-693-3264 or visit the website below

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Recently, T-Mobile & Robinhood customers, over 60 million combined, became victims of a data breach. These customers are now potentially at risk of identity theft and fraud for many years to come.

What Is SIM Hacking?
SIM hacking is when a person gets their hands on a new SIM card that’s tied to you. Here’s how they typically operate:

The hacker contacts your mobile provider and requests a new SIM without your permission.

The operator asks questions to verify your identity, which the hacker has obtained from the recent data breach, dark web, or other sources.

Once the hacker has gained control over your SIM/Phone number they can gain access to all of your personal and financial accounts. We are talking about banking accounts, stock accounts, and all of your social media accounts.

If your Identity & Phone isn’t SAFE Secure do it NOW

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Bottom Line
If you’re looking for a mobile plan that also protects you from cybercrime, then Efani is the mobile service provider for you. Their state-of-the-art cybersecurity helps stop hackers from accessing your mobile phone.

Protect your identity today!

Most Secure Mobile Phone Service Prevent Eavesdropping, Remote Access & Location Tracking SAFE Encrypted Secure Your Identity & Phone NOW AT&T, T-Mobile, Verizon, Tracfone and US Mobile – are susceptible to SIM swap scams

If your Identity & Phone isn’t SAFE Secure do it NOW at efani

This Video will Explain just how simple it is for a hacker to cause chaos and havoc on your life, finances, and more.


 

 

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Tracking Hacks U.S. Accuses Russian of Money Laundering

Robert McMillan and Kevin Poulsen report: A Moscow entrepreneur was detained during a vacation abroad this month and is now facing extradition to the U.S. on charges that he helped a notorious Russian ransomware group launder payments. The case marks the first arrest in connection with the Ryuk ransomware group, which gained notoriety with a string of attacks last year targeting U.S. hospitals already strained by the Covid-19 pandemic. Denis Dubnikov, a Russian citizen, was expelled from Mexico and placed on a plane to Amsterdam, where Dutch police arrested him on Nov. 2 on a U.S. charge of conspiracy to commit money laundering, according to his lawyer Arkady Bukh. Read more on WSJ.

 

Costco Alerts Customers about Credit Card Breach | efani SAFE?

Costco customers at four of the retailer’s Chicago-area warehouses may have had their payment information compromised after employees discovered five card-skimming devices during routine PIN pad inspections at the end of August.

“We promptly removed the skimmers, notified law enforcement, and engaged a forensics firm to analyze the devices,” A Costco spokesperson told FOX Business in a statement. “It appears that these skimmers had the ability to capture information on the magnetic stripe of a payment card, including name, card number, expiration date, and CVV.”

 

Report: Multiple data breaches common in past year | efani SAFE?

A new report from Cornell University and FreedomPay found that stakeholders were almost universally satisfied with internal risk assessment processes (96%) and cybersecurity systems (95%), despite the reality that one in three (31%) has experienced a data breach in the past. Among companies that had suffered a breach, most (89%) had experienced multiple breaches in a single year.

Consumer-facing businesses, like retailers, restaurants, and hospitality brands, have a major gap between their leaders’ confidence in their cybersecurity postures and the realities at hand. As businesses contend with growing and more frequent threats, prevention and remediation efforts are spurring complexity.

Three-quarters (74%) of companies report they use multiple cybersecurity systems, most (56%) have multiple systems spread across multiple locations, and a half (49%) say these systems are governed by multiple departments. Read the Full article here

CynergisTek Reports Supply Chain Risks Continue Driving Demand for Vendor Security

CynergisTek (NYSE American: CTEK), leading cybersecurity, privacy, compliance, and IT audit firm helping organizations in highly regulated industries navigate emerging security and privacy issues, announces a one-year Vendor Security Management service agreement with a nationally recognized children’s hospital with multiple locations.

The healthcare industry relies on third-party vendors to deliver a wide range of goods and services from cleaning services to cloud storage, Software-as-a-Service (SaaS) providers, and consultants. To provide fundamental support for patient care delivery, many of these vendors, also known as Business Associates, have access to an organization’s network through API connections or share critical information including Protected Health Information (PHI). Ransomware hackers either take down a third party, causing a domino effect, or use a third party to gain access to a Covered Entity’s (providers, health plans, and clearinghouses) environment. Complete article at Yahoo News

HPE Hackers Breached Aruba Central using Stolen Key

Lawrence Abrams reports: HPE has disclosed that data repositories for their Aruba Central network monitoring platform were compromised, allowing a threat actor to access collected data about monitored devices and their locations.

Aruba Central is a cloud networking solution that allows administrators to manage large networks and components from a single dashboard.

 

Manhasset School District continues to recover from September ransomware attack

Robert Pelaez has an update on the Manhasset School District ransomware incident that resulted in the dumping of numerous files on current and former employees and students on the dark web — many with personal and sensitive information. But what caught my eye in the update was this: Last month, district officials warned Manhasset students who held or shared files posted online by hackers they could face disciplinary action.

Files posted on the dark web ranged from documentation of disciplinary actions, student grade books, general staff information, and financial records. Seriously? They are threatening the students after they failed to adequately secure employee and student data going back years?

On what grounds can they discipline students who decide to go find what is publicly available? I wonder what the ACLU might have to say about that if they actually tried to discipline students for this.

MediaMarkt Still Blocked Ransomware Attack Intermittent Services

Zach Shipman reports: The MediaMarktSaturn group has suffered a heavy ransomware attack in recent days. It is difficult to say who did it: someone from Holland is ready to believe that it is the Hive group, which would have asked for 240 million dollars in bitcoin, however, at the moment there is no claim on the official “pr” page of the hacker group.

The signature left on some clients, however, is that of the group that has already been hit several times and has not even spared the hospitals:

“Your network has been hacked and all data has been encrypted. To regain access to all your data, you must purchase our decryption software

Waikato DHB warned a cyber attack ‘catastrophic for patient safety’

Natalie Akoorie reports: The Waikato District Health Board was warned it’s IT security was inadequate and severely compromised just months before a massive ransomware attack that brought Waikato Hospital to its knees. The internal cyber security document dated December last year also warned that a lack of training meant staff posed an unintentional threat to its systems.

However, Waikato DHB said the strategy was only a draft that was part of a wider digital strategy about to be heard by the DHB’s commissioners when hackers struck on May 18. Read more of the draft report’s findings on Stuff.