Cellular modems, RFID readers and wireless links can communicate outside the paths your network firewall monitors. The examples below explain those risks and the checks your team can make.
The FBI and EPA reported attacks on internet-facing water and wastewater controllers in at least seven states in July 2026. Some incidents disrupted water operations. This is an exposed-network example, not evidence that those attacks used radio.
Why it matters to you
Farm irrigation, building pumps and utility sites use controllers too. An exposed management connection can put those services at risk.
How Findavi helps
Findavi identifies exposed connections and weak credentials, then applies the response your team permits and checks the result.
Built in
Hidden radios inside equipment
What happened
Reuters reported undocumented communication devices in some solar inverters and cellular radios in some batteries. Our own team found a 4G modem back door into a control screen at an energy campus.
Why it matters to you
A separate cellular connection can communicate outside your building without passing through your network firewall.
How Findavi helps
Flags unlisted wireless devices in range of its RF switch, and sees cellular devices that also connect to your network. For radios it can’t hear, the assessment includes a site walk-through and hardware check.
13M+
Fake cell towers
What happened
Toronto Police reported more than 13 million network disruptions linked to devices imitating cell towers. Thousands of phones connected to them. The figure counts disruptions, not individual victims.
Why it matters to you
Alarm panels, elevator phones and sensors that use cellular depend on a working radio connection. A disruption can affect the service they provide.
How Findavi helps
Alerts your team when a cellular device that is also on your network drops off or its activity changes. The alert and supporting observations guide the response.
Relay attacks
Badges, keys and wireless access
What happened
ADAC testing shows that relaying the signal between some keyless cars and their keys can let a thief open and start the vehicle. A relay extends communication; it does not necessarily copy the key.
Why it matters to you
Wireless access needs its own checks. Car keys and RFID badges do not all use the same protections, so each system must be evaluated on its own.
How Findavi helps
Protects supported RFID systems, and checks that real employee badges and tag reads keep working.
Three questions to ask your team this week
You don't need special tools to start. These questions help you see where to look next.
Which of our devices have a cellular modem or a radio? If nobody can answer, that's the first blind spot.
Are any controllers still on factory passwords, or reachable from the internet? These are exposures to check before an attacker finds them.
Who gets an alert if a badge reader or sensor suddenly goes quiet? If the answer is no one, a lost connection could go unnoticed.
Your firewall can't hear radio. Findavi can.
Findavi watches network and radio activity, responds within your rules, and checks that the affected service still works.