Security as RSP Scales: Combating Profile Fraud

As the rapid global adoption of eSIM and RSP tech introduces oblique new fraud vectors, telco operators face sophisticated threats to their revenue, brand integrity, and regulatory compliance.  

In this article, we’re looking at the most effective strategies to combat these risks at scale, such as how operators are transitioning to Zero Trust models and leveraging AI-powered dynamic risk scoring, and using next-generation IoT standards like SGP.32 across advanced entitlement platforms. 

New Tech. Old Problems.  

Guglielmo Marconi of Bologna, Italy, changed the world in the 1896 with his system of ‘wireless telegraphy’ and is known today as the ‘father of radio.’ 

While a technical genius, he wasn’t necessarily a cautious man. He very loudly claimed his new radio messaging system was the greatest privacy tool ever invented, was entirely secure and could transmit utterly confidential messages over indefinite distance without interference. 

In 1903, during a highly publicized demonstration in the Royal Institution of London, Marconi was to receive a technical test phrase from a colleague 300 miles away. In front of a packed audience, the machinery instead started tapping out…  

"There was a young fellow of Italy,  
Who diddled the public quite prettily…." 

The rest of the message was allegedly Shakespearian cursing and just the word ‘rats’ over and over.  

It turns out that successful British magician, less successful inventor, and arguably ‘father of hacking’ Nevil Maskelyne decided to upstage Marconi by reverse-engineering his technology and working out how to use a second transmitter to hijack the signal. 

The lesson here is that the entire history of telco, from its very earliest days, serve to illustrate that as soon as a new network or protocol is released, someone will immediately get busy figuring out how to exploit it – if not for profit, then simply to show that they can.  

Today, the global telco architecture is deep into a digital transformation, shifting from physical hardware supply chains to virtualized, over-the-air connectivity pipelines.   

This structural decoupling of digital identity from physical asset means that remote SIM provisioning (RSP) now offers businesses unprecedented scalability, logistical efficiency, and frictionless onboarding. It also means an exponentially enlarged attack surface available to ever-more sophisticated and motivated bad actors.  

It’s no longer enough to invest in new tech, believe the marketing hype that it’ll solve all security problems forever, and delegate vigilance as problem for the folks down in the IT Dept. Instead, it’s a constantly evolving strategic imperative, intrinsically tied to enterprise’s ongoing revenue assurance, strict regulatory compliance, and tomorrow’s brand integrity.    

The Shifting Threat Landscape 

That 1903 network intrusion wasn’t just a pioneering hack for the love of mischief. It was also one of the earliest recorded examples of professional cybercrime. It was later discovered that Maskelyne had been bankrolled by the Eastern Telegraph Company, who weren’t big on business ethics but had a prescient understanding of what abstracting the digital signal from the hardware would eventually do to entrenched cable industries.     

Today, as remote provisioning reaches mainstream adoption, the telco industry is witnessing a matching evolution in the professionalization of intrusion and fraud operations. Bad actors and cyber-criminals, realizing the immense value of digital identities, are effectively repeating Maskelyne’s tactic of targeting the precise moment of initial connection, activation, and lifecycle state changes.  

These modern dark forces, some of whom are bankrolled by much larger organizations, exploit weak identity verification protocols, endpoint device compromises, and underlying legacy signaling vulnerabilities. The era of localized, manual SIM swapping has been replaced by automated, digital account takeovers. Forensic data published by white-hat hackers DeepStrike reported a terrifying 1,055% surge in SIM swap cases within the UK alone over just the past year.    

The technical architecture of eSIM remote SIM provisioning standards relies on the interaction between the Subscription Manager Data Preparation (SM-DP+) server and the Local Profile Assistant (LPA) software on the user's device. Security analysis by the GSMA has demonstrated that if the underlying Transport Layer Security (TLS) implementations aren’t properly configured, attackers can exploit this to intercept communications and clone a profile.  

Beyond intercepting the channels, attackers are currently deploying specialized software-level exploits unique to the eSIM ecosystem. For example, IBM has described the ‘memory exhaustion’ and ‘inflated profile’ methods, which are a variety of brute-force attack when bad guys bombard an eSIM with excessive digital profile downloads, permanently preventing the addition of legitimate network operators.  

Similarly, in ‘locking profile’ attacks, hackers alter settings to digitally lock the eSIM to a fake provider. The supply chain for setting up eSIMs can make it hard to track who’s handling your data, and low-end travel eSIM providers often route user information through third-party networks in other countries, during which subscriber data is exposed.  

Meanwhile, attackers will always look for outdated infrastructure and will take advantage of older cellular systems (like SS7) to intercept text messages used for two-factor authentication, completely side-stepping the eSIM's otherwise excellent built-in security. 

The True Cost of Compromise 

The cumulative financial, operational, and reputational costs of profile fraud are eye-watering and consume a significant chunk of the entire global telco economy.  

Global business losses attributed to digital fraud reached an estimated €491 billion over the past year, according to figures published by ecommerce analyst TransUnion.  

The telco industry absorbed about €38 billion of this, representing a €2.7 billion increase in just two years thanks to a spike in identity-enabled scams, subscription fraud, and automated ecosystem exploitation. The telco sector has also seen the unwelcome return of robocalling, resurrected by advances in AI supercharging the realism of voice and text scams, although Juniper Research believes the worst to be over with damages peaking at €70 billion last year and now declining as countermeasures start to catch up.    

When attackers do successfully exploit eSIM provisioning vulnerabilities at the enterprise level, the most popular go-to method of monetizing the intrusion is currently International Revenue Share Fraud (IRSF). This is where hackers break into a business’s voice-call controls and have the device fleet make thousands of rapid-fire calls to premium-rate phone numbers they themselves own. Most companies won’t even notice until a massive phone bill comes in, by which time the hackers have already stopped the calls, collected their cut from a go-between or broker, and abandoned the shell identity the premium numbers were purchased under. 

The irony is that there’s almost as much threat coming from the cops as the robbers. Regulatory compliance can represent an equally severe risk as governments worldwide are aggressively tightening oversight on the corporate handling of digital identities.  

The EU’s revised Network and Information Systems Directive (NIS2) and Cyber Resilience Act now obligate businesses to implement stringent and sweeping risk-management measures with immediate formal incident reporting requirements for critical infrastructure. Failure to secure your eSIM provisioning pipeline can result in massive regulatory fines, even if a breach never actually occurs.  

Meanwhile, operators are also obligated under Lawful Intercept (LI) rules to provide law enforcement with access to private communications. Should a business’s routing practices be opaque and hinder an LI investigation, the thwarted authorities are going to make up for their disappointment by turning their scrutiny on the operator instead.    

Predictive Defense through AI 

The magnificent speed, scale, and geographic range at which eSIMs can be provisioned rendered the old traditional, rule-based fraud detection systems effectively obsolete almost overnight.  

Today’s attackers are very well quipped indeed, and should they not be willing or competent to develop their own distributed proxy networks with automated residential IP spoofing and credential stuffing tools, they can simply purchase them off-the-peg, turnkey ready.  

To secure the modern provisioning ecosystem without destroying the frictionless user experience that made it a success in the first place, MNOs have to leverage machine learning (ML) models capable of generating dynamic risk scores in real-time. These scores are made by continuously correlating vast datasets of device telemetry, network behavior, location change, and historical activity  – all with the goal of detecting suspicious provisioning attempts before a malicious profile is ever downloaded.    

ML models' main advantage is their ability to do sophisticated behavioral analytics in as close to real-time as counts. When an AI-driven SIM profile selection and provisioning oversight engine is deployed, it immediately begins establishing a unique, cryptographically secure ‘normal’ baseline for every subscriber and device on its network.  

During a live provisioning event, the ML system evaluates the request against this personal baseline. If a user suddenly requests an eSIM profile transfer to an unfamiliar hardware ID with an IP address and location-tag thousands of miles away from where the user was just a few minutes ago, the model instantly flags the deviation.  

The unique risk score will spike and automatically trigger step-up authentication mechanisms, like live biometrics or 2FA, well before authorizing the release of any sensitive profile data.    

ML is not just useful but effectively obligatory for identifying coordinated, industrialized attacks such as large-scale SIM Box farms, which involves fraudsters activating thousands of eSIM profiles simultaneously in one place. Machine learning algorithms can identify these micro-anomalies in signaling traffic long before a human analyst could work out what was happening on their screen or parse the data. The system can then automatically cut the localized hardware off from the network entirely, actively preventing cloning or rapid profile reuse.    

Foundations of Secure Provisioning 

Securing the eSIM provisioning pipeline requires a comprehensive defense-in-depth approach that covers the entire profile lifespan, all the way from initial factory provisioning through to eventual deletion. Strong customer authentication, secure cryptographic key management, encrypted delivery channels, and continuous platform monitoring are core to ensure that only verified users and authorized devices get access to cellular networks.    

Briefly the gold-standard of verification, operators' authentication processes have had to rapidly evolve beyond legacy SMS-based one-time passwords, which are by now notoriously vulnerable to interception via SS7 exploits.  

Best practices now require Electronic Know Your Customer (eKYC) workflows integrated directly into the provisioning sequence, utilizing real-time government database lookups and biometrics. At the cryptographic level, next generation eSIM profile management uses robust key injection and dynamic management, while the GSMA enforces the Security Accreditation Scheme (SAS) that require what are essentially military-grade physical and digital security standards for hosting environments.    

Specifically in the IOT sector, as the industry hyperscales to support billions of new autonomous IoT sensors and connected vehicles, the legacy consumer-style provisioning frameworks had become a massive operational liability and bottleneck.  

Consequently, operators are now busy onboarding and implementing the SGP.32 spec overview to secure modern IoT fleets. Among an array of upgrades and improvements, SGP.32 revolutionizes the provisioning architecture by replacing the consumer-centric ‘pull’ model with a highly efficient server-driven ‘push’ orchestrated by an eSIM IoT Remote Manager (eIM). This drastically shrinks the exposed attack surface by centralizing profile policy enforcement in the cloud.  

The 1GLOBAL Security Advantage 

To counter the constant mutation and sheer volume of telco fraud, 1GLOBAL has engineered a definitive suite of entitlement and provisioning platforms that combine policy-based controls, real-time telemetry, and highly secure API frameworks. At its core is a highly secure, multi-tenant subscription management model that enforces hard data separation, encrypting all information both in transit and at rest.    

A paramount component of this secure ecosystem is the 1GLOBAL eSIM Entitlement Server (ES) architecture. Fully compliant with the exacting GSMA TS.43 spec, the 1GLOBAL ES is the secure gatekeeper between the mobile device and the core operator network. It securely authenticates and orchestrates advanced IP Multimedia Subsystem (IMS) services such as VoLTE and Apple Watch companion device pairing. Crucially, it executes real-time verifications of subscriber status, independently of general provisioning flows, so preventing unauthorized hardware from accessing network slices they’re not permitted in.    

For enterprise clients managing vast corporate mobile fleets, 1GLOBAL integrates easily and intuitively with Mobile Device Management (MDM) providers like Jamf Pro to enable fully automated, Zero Touch provisioning. This entirely removes the single most unreliable and error-prone component from each provisioning loop – the user. This approach allows Admins to securely push certified and pre-configured eSIM profiles directly to any of their devices, all covered by clear policy-based controls.  

1GLOBAL provides comprehensive real-time telemetry and advanced network switching controls, so Admins can easily enforce strict profile-limiting policies such as capping activations per hardware ID, deploy multi-IMSI switching and leverage predictive analytics to instantly isolate devices acting suspiciously, popping up where they shouldn’t be, or suddenly chugging through anomalous bandwidth.    

Securing Tomorrow's Networks 

As eSIM settles in to become the new normal, MNOs must recognize that digital provisioning infrastructure is the frontline of their network defense. Future-proofing operations against an increasingly industrialized threat requires telco providers to pivot to a Zero Trust architecture powered by AI, rigorous compliance, and relentless operational governance. 

First, MNOs need to get proactive about deepening eSIM interoperability and scalability through rapid, ecosystem-wide adoption of the GSMA SGP.32 standard, particularly for all and anything IoT related.  

Secondly, the integration of AI into the signaling and provisioning core is now a basic necessity. MNOs must systematically dissolve their siloed operations and get their data and telemetry routed into unified data lakes, where ML agents can get to work ingesting and sifting, all the better to dynamically throttle network access or quarantine hardware the moment it starts acting maliciously.    

Last, MNOs need to establish and abide by strategic operational governance that gets ahead of the impending big international regulatory mandates like the NIS2 Directive and the CRA.  

By combining standards compliance, advanced AI-driven risk intelligence, and proactive regulatory alignment, MNOs can decisively secure their networks, protect critical revenue, and forge a competitive edge in an eSIM ecosystem where the threats are now far scarier than mean limericks from rogue magicians.  

To discover more about how your business can deliver a secure, robust and resilient eSIM offering, contact a 1GLOBAL expert today.