It may seem like a dystopian nightmare, but hackers can actually see what you are doing online if they get access.
Sky customers were warned after a recent breach affected millions of customers.
A flaw in Sky's routers was found by researcher Raf Fini from Pen Test Partners.
The findings revealed that over six million devices could have been at risk of hacking.
It could be a common problem as people do not update the security on their router.
In May, the consumer watchdog Which? warned that a common flaw in people's routers was a lack of security updates.
So was anyone affected and how can you check if the problem affected you?
Findings from Pen Test Partners have said that people affected were easily exploited.
People were drawn in easily by a phishing email, designed to link someone to a website with malicious software on it.
From there, everything could be easily accessed, including passwords for banking sites.
There is no evidence so far that people's routers were actually exploited, but people are being encouraged to check.
A Sky spokesperson said in a brief statement after the report: "We take the safety and security of our customers very seriously.
"After being alerted to the risk, we began work on finding a remedy for the problem, and we can confirm that a fix has been delivered to all Sky manufactured products."
The issue is reported to have taken up to 18 months to fix and around six million people were at risk.
"While the coronavirus pandemic put many internet service providers under pressure, as people moved to working from home, taking well over a year to fix an easily exploited security flaw simply isn't acceptable," Pen Test Partner's Ken Munro told the BBC.
If you are one of the 1% of Sky's customers who does not have a router made by Sky, you can have it replaced free of charge.
The models that were affected are as follows:
The vulnerability exploited by hackers that was found in the routers could have affected anyone who had not changed the routers' default admin password.
You can easily check if you had your outer hacked through a series of very simple steps: