How to Disable Your Webcam (and Why You Should)

Once a concern that was the province of the paranoid, years worth of reports and revelations have made it readily apparent that people really can spy on you through your webcam. Here’s why you should disable or cover yours.

TL;DR version: Script-kiddie hackers and teenagers can, and do, use easily accessible tools and phishing techniques to hijack webcams of unsuspecting people, often who they know, and watch them through their camera. They can store images and videos of people in compromising situations in their bedrooms, and many of these images and videos are uploaded to shady websites.
If you have kids, you should strongly consider reading the entirety of this article and implementing something to stop their webcams from being on all the time (or ever).

Is Webcam Spying Really a Threat?

Ten years ago the idea that people—be they government agents, hackers, or just law-breaking voyeurs—could actively spy on you through your computer’s webcam would be the considered the ramblings of a paranoid conspiracy theorist. A slew of news stories over the intervening years, however, have revealed that what was once considered paranoia is now an uncomfortable reality.
In 2009, a student sued his school when he discovered his school-provided laptop was secretly photographing him (the ensuing legal investigation revealed that the school had collected 56,000 photographs of students without their knowledge or consent). In 2013, researchers demonstrated that they could activate the webcam on MacBooks without the indicator light turning on, something previously considered impossible. A former FBI agent confirmed that not only was this possible but that they’d been doing it for years.
In 2013, courtesy of the documents leaked by Edward Snowden, we learned that the NSA had successful programs they used to gain backdoor access to the cameras on iPhones and Blackberries. In 2014, again courtesy of the Snowden leaks, we learned that the NSA has a host of tools at its disposal to remotely monitor users like “Gumfish”: a malware tool that allows for remote video monitoring via your webcam. In early 2015, a group known as BlackShades was broken up after it was discovered that the software they sold for $40 a pop had been used to give millions of purchasers remote access (including webcam access) to victims computers; that’s hardly a new trick though as old programs like Back Orifice were used in the same fashion back in the 1990s.

It’s Not Just the NSA
We want to emphasize the whole “hardly a new trick” bit and the ease with which even marginally skilled malicious users can gain access to your computer. This article over at Ars Technica, Meet The Men Who Spy On Women Through Their Webcams, is an unsettling account. The majority of people doing the spying aren’t government agents, but low-tier hackers that use simple tools to catalog and monitor all the devices a computer may have access to.

So before you shrug your shoulders and say, “Well the NSA doesn’t care about my boring life, so it doesn’t matter,” understand that while we might all find allegations of government spying the most troubling on a global and intellectual level, the majority of actual webcam spying is carried out by creepy Peeping Toms.

So the short of it is: yes, webcam spying is a real threat. When everyone from the spooks at the NSA to the kid next door has access to tools that can turn a webcam against its owner then the threat is legitimate.

What Should I Do?
You should, no questions asked, disable or obscure your computer’s webcam. There is no good reason, especially in light of the numerous documented cases of webcam spying, to leave an insecure recording device permanently accessible on your computer. It’s so easy to do that there’s no reason not to. Here’s what you should consider.

Culled from howtogeek

No point disabling. Simply stick a dark tape, covering the webcam.
That's what I do on all my laptops........

And what do you dowhen you need to Skype with ba friend or associate?
I'd say,
1. Always use your guest account when you are online
2.Disable plugins as most attackers exploit weakness on these programs to access your PC.
3.Monitor your traffic always to check suspicious activities going on @ the background.
4.Use a firewall when you are online, stating all outgoing traffic must match a rule you set on your router.

There is no singular solution to ward off hackers, just like there are many means for an attacker to access a network.