New smartphone-controlled devices in homes can be connected to the internet to allow users to use them remotely.
Hackers could be targeting home appliances for access to household networks.
But Vince Steckler, chief executive of security giant Avast, has warned the connections are not secure, leaving personal information vulnerable to cyber snoopers.
Household appliances are increasingly being linked to each other to perform tasks that make life easier.
From remotely making coffee in the morning to ordering the shopping when the fridge is almost empty, the new tech is revolutionising homes.
Homeowners can even give the devices vocal commands if they are linked to virtual assistant software such as Amazon’s Alexa.
But users should beware, Mr Steckler warned at the VivaTech summit in Paris.
He said hackers could access the network created by the appliances and gain access to other devices such as laptops and mobile phones.
This allows them to get their hands on personal data such as credit card details, he added.
Speaking to the Mail on Sunday, Mr Steckler said: “Once you’re inside you can get into more valuabel places of the network.
“Coffee machines are not designed for security.
“TVs are not designed for security.
“What they are is additional vectors to get into your network.
“And you can’t protect them. There’s not going to be Avast [protection software] for Nespresso.”
The 60-year-old tech whizz said a hacker wouldn’t pick a smart TV to take over for ransom, and would instead target a home’s most vulnerable devices: cameras and baby monitors.
He also revealed he does not use messaging app WhatsApp, which is owned by Facebook, because of privacy concerns.
Mr Steckler told the newspaper: “How many people ask permission of family and friends before they share details with WhatsApp?
“Everyone thinks privacy is really important but most people’s behaviour is not that way.
“You willingly share information with Facebook, you willingly let Google know everyone about you because the value that you think you’re getting in exchange is worth giving up your privacy or your friends’ privacy.”
Hackers are most likely to try and access cameras and baby monitors, as opposed to TVs
Mr Steckler revealed he does not use WhatsApp because of privacy concerns.―The Sun