The most secure IoT connectivity provider depends on what you need to protect. Eseye publishes the most detailed private-networking controls, Soracom protects devices that also use Wi-Fi or Ethernet, 1NCE focuses on SIM-based onboarding, and KORE centralizes SIM operations across carriers. Kajeet Sentinel (our platform) combines fleet policy, filtering and SIM alerts for US deployments.
Each provider documents a different slice of security, so the table lines them up by what they publish and where each one stops.
| Provider | Best For | Documented Security Controls | Main Limit |
|---|---|---|---|
| Kajeet Sentinel (ours) | US fleets wanting policy and alerts in one console | Content filtering, firewall protection, SIM-removal and unauthorized-use alerts | No private APN or IMEI lock listed |
| Eseye Infinity | Multi-country fleets needing private networks | Private APN, VPN, pre-allocated IPs, IMEI locking, firewalls | No US detail or pricing published |
| Soracom | Fleets mixing cellular, Wi-Fi and Ethernet | WireGuard tunnel with virtual SIM | Tunnel lacks IMEI Lock and SMS |
| KORE | Large fleets spread across carriers | Cross-carrier SIM lifecycle control, APIs | No specific security controls listed |
| 1NCE | Products needing SIM-based onboarding | Device Authenticator using the SIM as identity | Covers onboarding identity, not data protection |
No row wins every column. Eseye’s list is the longest, but a private network solves a different problem than Soracom’s tunnel or 1NCE’s onboarding identity, so the right pick follows the threat you face.
Kajeet Sentinel (our platform) runs a fleet from one console, with bulk activation, remote suspend and restore, and policy and rate-plan changes. Its notification center flags SIM removal, unauthorized use and data usage anomalies, and the Sentinel platform adds customizable content filters. Kajeet also describes SIM Protect, which can suspend a SIM that has been moved to another device.
The connectivity side is smartSIM, a single eSIM with access to every major North American carrier, plus built-in firewall protection and malware detection. SentinelOS adds a REST API, and a CLI and MCP server in Public Beta, for teams that automate fleet operations in code. Kajeet’s smartSIM page lists $2.50 per SIM per month, with pricing varying by use case and data needs.
The gaps are specific. Kajeet’s pages don’t describe a private APN, IMEI lock or published security certification, and the SentinelOS page says nothing about API access controls, so buyers who need those should request them in writing.
Best for: US fleets in education, healthcare, public sector and transportation that want policy and security alerts together.
Eseye Infinity has the most detailed security list of the five. Eseye publishes private APN, VPNs, pre-allocated IP addresses, IMEI locking and bespoke firewalls, and its footer lists ISO 27001 certification. Coverage spans 190 countries and more than 800 networks, with eUICC-compliant switching between providers that Eseye says delivers over 99.5% device uptime.
Eseye describes its private APN, VPN and addressing as complete security, which overstates what a network layer can do. A private APN changes the traffic path; it doesn’t secure device firmware, application logins or administrator accounts.
The practical weak spots are US detail and cost. The page doesn’t mention US coverage specifically and publishes no pricing, so American buyers should get carrier configuration and quotes in writing.
Best for: multi-country fleets that want private networking and IMEI locking.
Soracom’s security story centers on Soracom Arc, a WireGuard-based link. Arc lets any device that supports WireGuard reach Soracom platform services over Wi-Fi or Ethernet, using a virtual SIM that makes the connection appear cellular.
By default only traffic to Soracom services uses the tunnel. Everything else keeps the device’s existing route, so Arc secures a defined path rather than every packet a device sends.
Arc also gives up some cellular features. IMEI Lock, SMS and USSD, CHAP authentication and SIM packet capture aren’t available, only one virtual SIM can attach to an IoT SIM, and the documentation lists no Arc pricing.
Best for: fleets where some devices connect over Wi-Fi or Ethernet and still need a protected path to the platform.
KORE’s connectivity management platform puts SIM activation, suspension, usage monitoring and troubleshooting in one dashboard across hundreds of networks, with APIs for batch activations and suspensions and consolidated billing. Named products include Super SIM, OmniSIM and SGP.32 eSIM.
That operational control reduces the chance of a forgotten SIM staying live, but the page lists no specific security controls. Buyers should get encryption, access roles and logging written into the contract. KORE also publishes a smart-security case study in which cellular is the primary link for building-entry intercoms and a router provides Wi-Fi backup. It shows a use case, not an audit.
Best for: large fleets that need one operations view across several carriers.
1NCE’s Device Authenticator uses the SIM as a fingerprint to onboard devices. Devices are identified by ICCID, the cloud trusts 1NCE’s managed service rather than each device, and the product needs no assembly-line changes. Optional administrative logs report new SIM purchases and newly onboarded devices.
1NCE says it relies on the cellular authentication techniques found in every smartphone and gives no further detail on encryption. Treat it as an identity and onboarding tool, not a complete security stack.
Best for: product makers that want to provision devices from the SIM without integration work.
Four questions separate them: who can administer the fleet, where traffic travels, how SIM identity is protected, and what evidence backs an uptime claim.
When shortlisting IoT SIM providers, zero trust security starts with administration. NIST’s zero trust architecture rejects trust based only on network location or asset ownership and requires identity checks before access to a resource. For a connectivity platform, that means a least-privilege operator account, a restricted API credential and a credential that can be revoked quickly.
A role selector in a portal proves little. A demo in which a limited operator is blocked from suspending another business unit’s SIMs proves a lot.
Secure IoT connectivity ends where the provider’s responsibility ends, and the buyer owns the rest. IoT connectivity security covers the whole path from device through carrier, provider core, tunnel or private network, and cloud endpoint, so ask for a diagram showing where encryption terminates and who manages each firewall rule.
Eseye’s private network and Soracom’s Arc tunnel protect different segments of that path. Neither covers the device itself.
SIM and eSIM IoT connectivity issues and security risks reach beyond the form factor. Provisioning access, profile changes and account recovery matter more than whether the credential sits on a removable card or an embedded chip.
Kajeet’s explainer on SIM-jacking and how to avoid it covers phone-number takeover, which differs from the IoT risk of a stolen SIM moved into another device. IoT SIM security therefore starts with an inventory tying each SIM to its intended device, plus alerts when that pairing breaks. Sentinel’s SIM-removal notifications target that second case.
Lists of the most reliable IoT connectivity providers, uptime and security reviews included, often blend two kinds of evidence that should stay separate. A connection can stay up while granting excessive permissions, and a tightly controlled service can still go down. A percentage on a vendor page, such as Eseye’s 99.5% device uptime, is a marketing figure until it appears in your contracted SLA with its measurement boundary and exclusions.
Security requirements change with the data and the consequences of failure. Connectivity selection never transfers the buyer’s regulatory duties to the provider.
The best secure connectivity solutions for healthcare IoT match the clinical workflow. Healthcare organizations should map which data crosses the link, who administers devices and whether a dropped connection interrupts care or merely delays an upload. Eseye’s private network suits multi-country programs; Kajeet’s policy and alerting suit a US-only fleet. Neither makes a workflow HIPAA-compliant by itself.
Teams looking for secure IoT connectivity for payment devices should trace the transaction path from terminal to processor and keep payment traffic apart from maintenance and guest access. Private networking from Eseye or filtering from Sentinel can help with separation, but no connectivity product establishes payment-security compliance on its own.
Secure industrial IoT connectivity has to respect production safety. An automated suspension that makes sense for a lost sensor SIM could halt a critical process, so define who may change policy and how an operator restores service. Plant segmentation and controller security sit outside any carrier’s scope.
The best secure IoT connectivity platforms for enterprise deployments make ownership explicit through account hierarchies, roles, integration credentials and change records. KORE’s cross-carrier dashboard and Kajeet’s single console fit that governance need, while 1NCE fits product makers onboarding devices at volume. Confirm that an integration account can read what it needs without gaining write access.
US availability is a configuration question, not a vendor claim. Eseye’s global footprint and a long feature list don’t guarantee a particular device will work at your sites. Use this sequence before signing a fleet-wide agreement:
Of the five, only Kajeet’s smartSIM page lists a price. Ask the others to itemize private networking, platform access, support and data charges.
No provider here is the most secure choice in every deployment. Eseye leads on private networking, Soracom on protecting Wi-Fi and Ethernet devices, 1NCE on SIM-based onboarding and KORE on cross-carrier operations, while Kajeet fits US fleets that want policy and alerts together.
If that describes your fleet, start with Kajeet’s IoT management platform and hold it to the same access, policy and incident questions as every other finalist.
No. The right provider depends on your threat model, geography, devices and who operates the fleet. Compare documented controls against your requirements, then test the proposed configuration.
No. A private APN changes the network path, but it doesn’t secure applications, administrator accounts or device software. Confirm routing, encryption endpoints and access controls separately.
Not automatically. Both need protected administration and recovery. eSIMs add profile-management considerations, while removable SIMs add physical-handling ones, so judge the whole service.
No. Connectivity is one part of the system. The organization still has to assess its applications, devices, agreements and operating controls against the rules that apply.
Check carriers, radio technology, device compatibility, traffic path and support ownership at your real locations. Then test the security controls before committing the fleet.