Market Overview

TNS Call Guardian App Addresses Growing Use Of Neighbor Spoofing Robocall Tactic


By analyzing 1 billion call events per day across over 500 telecom
operators, TNS' robocall detection solution enables carriers to better
protect subscribers from local number caller ID spoofing

Transaction Network Services (TNS),
whose Call
robocall detection solution is used by leading US wireless
service providers as well as US landline providers, today announced that
its Neighbor Spoofing feature is enabling carriers to protect their
subscribers from the increasingly popular neighbor spoofing robocall

This press release features multimedia. View the full release here:

TNS Call Guardian Neighbor Spoofing Feature (Photo: Business Wire)

TNS Call Guardian Neighbor Spoofing Feature (Photo: Business Wire)

With neighbor spoofing, no matter where the call originates, the
information on the receiver's phone matches or closely matches the area
code and a number of digits from his or her own phone number – which
makes the consumer more likely to trust the call and pick up. TNS'
neighbor spoofing feature analyzes 1 billion call events per day across
over 500 telecom operators to detect and establish a reputation for
phone numbers and phone calls to help consumers evaluate if a phone call
with a familiar area code is legitimate.

The FTC received
4.5 million robocall complaints in 2017, up from 3.4 million the prior
year. Robocall bad actors continue to adjust their strategy to elude
detection, and Neighbor Spoofing has emerged as a top tactic. While some
Over-The-Top (OTT) robocall blocking apps claim to address neighbor
spoofing, the effectiveness of these apps is severely limited by lack of
real-time visibility into telecom network call activity and call

"In early 2017, TNS started to see a sizable increase in the use of
neighbor spoofing as a way for bad actors to evade measures put in place
to detect traditional call spoofing," said Bill Versen, Chief Product
Officer at TNS. "Due to our unique position within the telecom industry
as one of the largest independent inter-carrier call signaling, routing,
and end-point discovery providers, carriers leveraging TNS Call Guardian
can detect neighbor spoofing calls with greater accuracy than OTT apps.
In a recent study
by Mind Commerce, TNS Call Guardian correctly identified spoofed numbers
98% of the time during testing compared to 64% of our nearest

When a call comes through, TNS Call Guardian is able to determine
whether the number is invalid, unallocated, or unassigned, including
toll free numbers. If the number is not valid, TNS Call Guardian is then
able to alert the user on the receiving line that they should not
answer. If it is a valid number, then another level of analysis is

TNS Call Guardian performs additional analysis including review of
attestation level of the call if the service providers have implemented
the latest call authentication standards such as STIR/SHAKEN.
Additionally, an examination of signaling events for that particular
call is performed and if there are signaling events that indicate that
call has traversed an unlikely route or originated from a network that
does not own the number, that single call is tagged as suspect spoofing.
When a call comes through, the receiver is alerted of the phone number's
reputation, and is advised whether or not it is likely safe to answer.

Bill Versen, adds: "Neighbor spoofing is more than a nuisance. If
consumers stop answering calls from local numbers, they could miss an
important call from a hospital, pharmacy, school, or loved one. With
neighbor spoofing detection, carriers can offer even greater protection
to subscribers."

For additional information on TNS Call Guardian, visit here.

About TNS

From small rural operators in the US to the largest multi-national
carriers, TNS has over 500 operator customers and addresses the full
needs of wireless and wireline operators in the US and globally. The TNS
Call Guardian
robocall detection solution is used by leading US
wireless service providers as well as US landline providers, and is
accessible via numerous types of signaling protocols, can be customized
by the individual operator, and is available to all types of service
providers, including wireless, VoIP, and TDM wireline. TNS analyzes over
1 billion call events across over 500 operators every single day, which
is why TNS Call Guardian app identifies 40-60% more unwanted robocalls
than competitors. For additional information visit here.

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