IoT Devices on Your Home Network Can Secretly “Call Home”

📡 How IoT Devices on Your Home Network Can Secretly “Call Home” — and Why It’s a Security Risk

In today’s smart home era, the very devices that make life more convenient — like smart TVs, plugs, and cameras — can also pose serious security risks. Here's a look at what’s going on, based on recent research and news:

1. Millions of Insecure Devices Are Talking to the Cloud

According to a new report from Palo Alto Networks, nearly half of all network connections that stem from IoT devices come from equipment classified as “high-risk.” TechRadar

• These devices often use outdated firmware, weak security protocols, or even default passwords. techspear.co+2Palo Alto Networks+2

• Because many home networks don’t segment traffic (i.e., everything lives on the same “flat” Wi‑Fi network), a single compromised IoT device can become a gateway for attackers to reach more sensitive systems. Palo Alto Networks

2. They Can Be Hijacked into Botnets

Budget or uncertified IoT devices are especially risky. A notable example is BadBox 2.0 — a botnet of over 10 million Android-based devices (think smart TVs, digital frames, even projectors). PC Gamer

• Once these devices are recruited into a botnet, they can be used for large-scale attacks like DDoS, fraud, or even being proxies for malicious traffic. PC Gamer

• Because many of these devices rarely receive security patches, they remain vulnerable for long periods. ITU Online IT Training+1

3. Vulnerabilities in Protocols Let Hackers Move Laterally

Researchers recently discovered critical flaws in Apple’s AirPlay protocol (called AirBorne) that could allow an attacker on your Wi‑Fi to spread malware via local devices. The Verge+1

• The vulnerabilities could allow remote code execution (RCE), access to local files, and even eavesdropping through speakers’ microphones. The Verge

• In other words: an insecure smart speaker or TV could act as the entry point for deeper network compromise. WIRED

4. Devices Whisper Private Data Back to Their Makers

Beyond just security vulnerabilities, many IoT devices unintentionally expose user data:

• They may send habit, location, or device‑status data to manufacturer servers in an unencrypted or poorly protected way. Smartify Daily+1

• Because many home routers don’t isolate devices, your smart bulb might “see” or communicate with your more sensitive devices — or at least make their presence known. Institute for Security and Technology

5. Why Isolation & Monitoring Matter

Given these risks, here are some of the most recommended defenses:

• Segment your network. Put IoT devices on a separate VLAN or guest network so they can’t freely talk to your computers or other sensitive systems. Palo Alto Networks

• Update firmware regularly. IoT devices often lag in receiving security updates — staying on top of them is critical. techresearchs.com+1

• Limit “phone home” behavior. Use firewalls or DNS-based filtering to restrict where your IoT devices can communicate.

• Choose trusted devices. Stick with manufacturers that follow strong security practices and provide frequent updates. ISACA

⚠️ Bottom Line

Your smart home’s convenience comes with a hidden cost. IoT devices may appear harmless, but many are quietly “calling home,” exposing your network to risk — whether through weak security, botnets, or unencrypted data. Knowing how these devices communicate — and taking steps to control it — is critical to keeping your home safe.