Can refrigerators come alive and attack you? Obviously, that doesn't sound very plausible in the first place, but in the era of smart fridges, you may want to revisit that possibility.

According to a new study by security company Proofprint, over 100,000 internet-connected devices took place in a malicious cyberattack recently that resulted in 750,000 spam emails being sent out. Computers, media players, smart TVs, and at least one internet-connected fridge were made into zombies to do the hackers' bidding.

Security experts are more concerned what this means for the future of the internet of things. What will our connected home be like if it was so easily hacked?

"Bot-nets are already a major security concern and the emergence of thingbots may make the situation much worse," said Proofpoint security manager Dave Knight in a statement.

[Quartz Image via Samsung isn't the fridge that got hacked]