This list covers security testing companies that assess wireless networks, IoT and connected devices, embedded hardware and firmware, and is written for device makers, product security teams and enterprises that need an independent IoT or wireless penetration test.
Real attacks don’t wait for release schedules. Wireless and IoT products ship fast, integrate dozens of components, and expose new attack paths the moment they connect. Teams that test early — and keep testing — ship safer devices, avoid recalls, and protect customers’ trust. Here’s where top wireless security testing companies make the difference.
The leaders below combine deep research backgrounds with hands-on device work: protocol reversing, PCB analysis, firmware teardown, and live adversary simulation. You’ll see how each group approaches risk, what results they can point to, and why their processes suit both startups and global brands. Use this as a practical map to short-list partners among best IoT security testing firms.
Wireless And IoT Security Testing Companies At A Glance
1. Company
Location
Testing focus
1. White Knight Labs
Guys Mills, Pennsylvania, USA
Manual offensive testing, including wireless, cloud and mobile
2. Bishop Fox
Tempe, Arizona, USA
Wireless, Bluetooth, hardware and red team testing
3. IOActive
Seattle, Washington, USA, with labs in Seattle and Madrid
RF, hardware and firmware testing, including medical and automotive devices
4. River Loop Security
Washington, DC, USA
Wireless, RF, embedded hardware and firmware reverse engineering
5. Atredis Partners
St. Louis, Missouri, USA
Bespoke hardware and embedded research, including automotive
6. GRIMM
Washington, DC and Grand Rapids, Michigan, USA
Vulnerability research with custom tools and sensors, including wireless
7. Red Balloon Security
New York City, USA
Firmware and embedded device security
8. Blackwing Intelligence
New York, USA
Boutique research on complex software and hardware, including wireless
9. Iterasec
Lviv, Ukraine and Rzeszów, Poland
Embedded, firmware, automotive, cloud and mobile testing
10. Blaze Information Security
Porto, Portugal
Application, network and cloud testing, red teaming
Best Wireless Security Testing Companies For Real-World IoT Risk
White Knight Labs (WKL) is an offensive security consultancy built around manual testing — roughly 80% hands-on to surface novel bugs that scanners miss. The team includes ex-NSA engineers, Microsoft veterans, and U.S. Army special operations alumni who tailor every engagement to business objectives. Clients consistently highlight tenacity and detailed reporting that translate findings into fixes.
Expect targeted wireless and IoT penetration tests alongside web, mobile, cloud, and social engineering simulations. Engagements are scoped to fit your roadmap, from focused assessments to broader attack simulations that stress test people, process, and tech — a practical stance for buyers comparing best wireless network penetration testing companies.
One of the largest offensive security firms in the market, Bishop Fox covers classic penetration tests, red teaming, and product security with a long track record across the Fortune ranks. Their COSMOS platform adds continuous attack surface monitoring to identify exposure between test cycles. Public research, dozens of advisories, and open-source tools back the team’s engineering depth.
Hardware and IoT reviews sit squarely in their wheelhouse, with a published case study on Sonos’ Move speaker that spanned Bluetooth, USB, and voice assistant features through to coordinated remediation. This scale plus product-specific chops puts Bishop Fox in the conversation when short-listing best wireless security testing companies.
Services & expertise: Penetration testing, red teaming, attack surface management, product security assessments, cloud and application security
Location: Tempe, Arizona, USA
Founded: 2005
Team size: 235 experts
Portfolio: Fortune 100 programs; product security review for Sonos’ Move speaker including hardware and wireless testing
IOActive is a research-driven shop known for uncovering high-severity bugs in complex systems — from smart cities and LoRaWAN to satellites and automotive platforms. Global labs in Seattle and Madrid enable deep hardware/firmware analysis backed by responsible disclosure history. Leadership priority on offensive research keeps the work grounded in real-world attack paths.
For device makers, that translates into assessments that don’t stop at the app: they follow the signal through radios, stacks, protocols, and supply-chain components. The firm’s long record of publishing impactful findings makes it an easy pick among top IoT penetration testing companies.
Services & expertise: Research-driven penetration testing, vulnerability research, hardware/firmware security, compliance and advisory across smart grid, automotive, medical, and aviation
Location: Seattle, Washington, USA, with global operations and labs in Seattle and Madrid
Founded: 1998
Team size: ≈90 experts
Portfolio: Discovered high-severity vulnerabilities in smart city and LoRaWAN tech; hardware audits for automotive, medical, satellite systems
Specialists in embedded and IoT security, River Loop’s engineers reverse engineer RF protocols, tear down PCBs, and dig into firmware at scale. Services span the full product lifecycle, including cryptography design/review, hardware supply-chain assessments, and disclosure response consulting. The team’s acquisition by Two Six Technologies underscored its depth in wireless systems and specialized R&D.
River Loop also builds automation into the process via its Pilot Security platform for firmware analysis, helping teams maintain momentum between major test windows. The blend of deep manual work and pipeline automation fits buyers seeking best IoT penetration testing services that plug into CI/CD without friction.
Atredis is worker-owned and built by researchers with a long history of finding bugs in widely deployed products. The firm focuses on bespoke engagements: embedded and automotive assessments, advanced vulnerability research, and hands-on risk advisory. Public credits include discoveries in products from major tech brands and induction into Qualcomm’s Product Security Hall of Fame.
Because the company avoids a sales-heavy model, projects are staffed by the engineers who do the work, creating a direct line from scoping to exploitation to fix guidance. For organizations that want depth over volume, Atredis stands out among top IoT penetration testing companies.
Portfolio: Research on vulnerabilities across major vendors; Qualcomm Product Security Hall of Fame; DARPA research; frequent BlackHat and DEF CON talks
GRIMM brings a security engineering mindset to testing, pairing vulnerability discovery with custom tools, sensors, and analytics. The firm supports government agencies and critical infrastructure while also serving private-sector teams in finance and manufacturing. A footprint in Washington, DC and Michigan keeps talent close to both policy hubs and industrial corridors.
Their team has CTF roots and publishes original research, which shows in the way they structure assessments to prove exploitability, not just find CVEs. That combination of engineering and operations earns GRIMM a place on any short list of top wireless security testing companies.
Services & expertise: Advanced threat analysis, vulnerability discovery, cybersecurity tools and analytics, automated testing, penetration testing, technical training
Location: United States; presence in Washington, DC and Grand Rapids, Michigan
Founded: 2013
Team size: ≈30 experts
Portfolio: Cybersecurity tools, sensors, and analytics for government and critical infrastructure; new headquarters investment in Stafford County, Virginia
Born from Columbia University research, Red Balloon secures devices from the firmware up. Its Symbiote and OFRAK technologies harden runtimes without source code, which matters when vendors can’t or won’t expose internals. For teams seeking best IoT penetration testing services alongside runtime protection, this is a pragmatic option.
Work spans consulting for embedded defenses, FPGA security, and automated hardware reversing, with customers across defense, aerospace, telecom, and Fortune-level enterprises. The company pairs research disclosure with production deployments, closing the loop between finding and fixing. Projects are goal-driven and modular — easy to align with certification deadlines or program milestones.
Services & expertise: Firmware hardening, runtime protection and monitoring (Symbiote/OFRAK), security consulting for embedded devices, FPGA security, automated hardware reversing
Location: New York City, USA
Founded: 2011
Team size: 28 experts
Portfolio: Symbiote and OFRAK protections deployed in mission-critical embedded systems; clients include U.S. defense and aerospace agencies and Fortune 500 firms
Blackwing is intentionally small — a boutique research group that takes on complex software and hardware problems when there’s a strong technical fit. The founders’ roots in DEF CON CTF (two wins) set the tone: rigorous analysis, clean exploitation, and concise reporting. Media coverage from major outlets reflects the impact of its research over time.
Because the firm stays lean, clients work directly with senior researchers from scoping through final verification. That focus on depth makes Blackwing a good match for organizations comparing best wireless network penetration testing companies where quality outweighs headcount.
Founded in Lviv and now also in Rzeszów, Iterasec has grown quickly while keeping a manual, human-centric approach. The team covers web and mobile through to networks, cloud, IoT, and automotive, and runs red team simulations for organizations that want full-path attack views. Rapid growth to roughly 30 specialists and 60+ projects per year signals a process that scales.
Iterasec’s engineers adjust scope and depth to each client’s risk profile, whether that’s a targeted embedded review or a broader adversary simulation. The blend of device and cloud expertise positions Iterasec well for buyers seeking best IoT penetration testing services that span the full stack from firmware to Kubernetes.
Blaze delivers application, network, and cloud testing along with red teaming and secure SDLC consulting from its Porto headquarters and satellite offices. The company has served more than 200 organizations across 25 countries, backed by ISO 9001 and ISO 27001 certifications. After its 2021 acquisition by Accenture, Blaze retained a boutique engagement style and an international reach — applied to both devices and their supporting platforms.
Beyond classic pen tests, packaged assessments like RWESA and the Blaze Continuum subscription offer structure for distributed workforces and ongoing assurance. Reports are clear, engagement staffing is senior-heavy, and teams can ramp quickly without multi-year lock-ins. Financial services, energy, retail, and ecommerce references help de-risk selection cycles.
Location: Porto, Portugal with satellite offices in Brazil, Germany, Poland, and the Netherlands
Founded: 2016
Team size: 10–49 experts
Portfolio: Served over 200 organizations in 25 countries across banking, fintech, energy, IT, retail, and ecommerce; acquired by Accenture in 2021
Choosing A Wireless And IoT Testing Partner That Fits
Match the scope to the risk. Hardware-heavy products need teams that speak PCB, RF, and firmware, while connected apps and cloud backends demand mobile, API, and container expertise. Ask for sample reports, timelines, and how the testers validate exploitability in your environment — the best answers often come from teams recognized among best IoT security testing firms.
Funding cycles and release dates change, so favor partners who can run tight sprints and revisit high-risk components before shipping. Whether you need deep hardware research or scheduled attack simulations, use this list to shortlist, meet the engineering leads, and pick the group that will help your team move fast without leaving gaps.
If you want to feature your wireless and IoT security testing company on this list, email us or submit a form in the Top Choices section. After a thorough assessment, we’ll decide whether it’s a valuable addition.
IoT security testing is the process of checking connected devices and their ecosystem for vulnerabilities an attacker could exploit. It covers the hardware, firmware, wireless interfaces, network services, companion mobile apps and cloud APIs. The goal is to find and fix weaknesses before a product ships or before attackers find them in the field.
How much does IoT penetration testing cost?
The cost depends on scope: how many devices and firmware versions are tested, how many wireless protocols are in play, whether the mobile app and cloud backend are included, and how deep the hardware work goes. Most firms quote a fixed price per engagement after a scoping call, based on the number of testing days required. Retesting and compliance reporting are sometimes priced separately.
What is wireless penetration testing?
Wireless penetration testing assesses the security of wireless networks and radio links, such as Wi-Fi, Bluetooth and BLE, Zigbee or proprietary RF. Testers look for weak encryption and authentication, rogue access points, insecure pairing, and ways to intercept, replay or inject traffic. It can be performed on a corporate network, a facility or an individual connected product.
What are the most common IoT vulnerabilities a penetration test looks for?
An IoT penetration test usually looks at the device, its radio links and the cloud or mobile services it talks to. Common findings include weak or default credentials, unprotected firmware that can be extracted and modified, insecure radio protocols such as Bluetooth, and exposed debug interfaces on the hardware. On this list, River Loop Security states it reverse engineers RF protocols, tears down PCBs and digs into firmware, while Blaze Information Security states its testing covers both devices and their supporting platforms.
