STIR/SHAKEN: The shield against caller ID spoofing attacks

Business Development and Pre-Sales Director DACH at Italtel Deutschland GmbH

In the digital age, the telephone network, once a direct communication channel, has become a battleground against identity deception. Caller ID spoofing, the practice of masking or falsifying the originating phone number on caller identification systems, has become a widespread issue. This deceptive practice is not just an annoyance but a serious threat, often used in scams and fraudulent schemes to extract personal information or money from unsuspecting victims.

The Issue

The crux of the problem lies in the ease with which robocallers and fraudsters can manipulate Caller ID information. With the advent of Voice over IP (VoIP) technology, it has become trivial for malefactors to impersonate banks, government agencies, or even individuals’ own phone numbers. This has led to a significant erosion of trust in telephone communication and a substantial increase in successful phone scams.

The statistics are alarming: billions of robocalls are made each year, with a significant portion being fraudulent. The Federal Trade Commission (FTC) in the United States, for example, received 5.7 million complaints about unwanted calls in 2021 alone. These calls are not just a nuisance but represent a serious security risk, with the potential for substantial financial losses.

The STIR/SHAKEN solution

To counter this, the telecommunications industry, in collaboration with regulatory bodies, has developed the STIR/SHAKEN suite of protocols. STIR/SHAKEN is a set of standards that allows telephone networks to verify the authenticity of Caller IDs using digital certificates, akin to those that protect websites, ensuring that the incoming call is indeed from the displayed number.

Global Efforts and Implementation

The implementation of STIR/SHAKEN has been mandated by regulatory agencies. These efforts aim to create a safer telecommunications environment, although the transition presents its challenges, including the need to update or replace legacy systems.

The Potential Impact

The introduction of STIR/SHAKEN is a critical move to protect individuals from the pervasive problem of Caller ID spoofing. As the system is adopted more widely and its standards evolve, the hope is that the tide will turn against robocallers and fraudsters, leading to a future where telephone calls no longer carry the risk of deception.


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Mohamed Fouly
Business Development and Pre-Sales Director DACH at Italtel Deutschland GmbH Long experience in telco, offering services ,solutions to both Service Provider and Enterprise in EMEA and LATAM markets. Expierience in managing team, devoloping business, leading complex project delivery, managing P&L
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