Posted on Aug 19, 2016
Most of the devices we use on a daily basis these days have webcams installed as standard. While this makes keeping in touch with friends and family very easy, it is important to be aware of the potential associated security risks. There have been several stories in the news recently about people who have had their webcams ‘hacked’ and the implications for how this affects personal privacy are significant. In the first of a short series of ‘tech tips’ posts, we explain how webcams can be accessed and suggest some things you can do to avoid someone looking in on you, unwanted.
How can webcams be accessed?
Most hackers use a so-called ‘Trojan horse’ attack to access webcams. By erroneously clicking on an email attachment or downloading a piece of music or video that is infected with malware, the hacker may be able to control your device remotely.
Another technique, known as ‘clickjacking’ occurs when a website is manipulated so that the permission prompt for Flash becomes invisible. In this can, an invisible prompt can be placed over a commonly used area of the page (for example, the ‘Play’ button on a video) so that when you watch the video you inadvertently give permission to Flash to start recording images on your camera. The type of webcam you use may also be an issue, although this is now less common. Nonetheless, a recent article about security risks associated with baby monitors with in-built cameras suggests that there are still vulnerabilities in certain models.
What can you do to protect against this?
There are several things that you can do to avoid your webcam being attacked. The most obvious, and perhaps easiest, is to cover your webcam when it is not in use. However, it is possible that a hacker could still access the device’s audio feed, which is also pretty undesirable.
Make sure your hardware and software are up-to-date. The webcam itself, like most standalone devices, is controlled by its firmware and this is where any vulnerabilities are most likely to occur. Try to stay up-to-date with any firmware updates from the device’s manufacturer. Similarly, make sure your computer virus protection is current. You should run routine malware scans (malware is a popular way for hackers to access your device in other ways as well), and make sure you use a firewall to protect against attacks. A common way for malware to enter your computer is via email attachments so make sure that you don’t click on any suspicious ones. You can also make sure your wireless connection is secure by using a unique password on it, rather than the default one that comes with the router.
If you still wish to do more, there are some programs out there now that offer webcam protection. They work in the background and notify you when your webcam is being used. You can also keep an eye on the indicator light on the webcam, if you have one.
Posted on Jul 19, 2016
The past month has been an active and not always very positive one on the news front. At times when politics and events around the world can seem to be broadly negative, it can be nice to remind ourselves of 'good news' going on in the background. Over the past few months, we have shared quite a lot of positive technological advances on our Twitter and Google+ feeds. In this blog post, we have included some of our favourites for you to enjoy.
1. Using solar power for air conditioning
A large shopping centre in Victoria, Australia was in the news recently as its owners are using solar-concetrating thermal technology to power the centre's air conditioning system. The innovative system heats and cools air within the building, without having to introduce external air, using drying wheels to act as dehumidifiers and remove moisture from the air. Heat is captured in the winter to hear the centre's ambient air, and provides power to cool the centre in the summer. Researchers testing the system believe that it will drastically reduce electricity requirements, while also being about 40% smaller than a comparable air conditioning system.
2. Using lasers to uncover our past
Airborne laser scanners have recently been used to reveal several undiscovered cities hidden in jungles in Cambodia. Using a helicopter equipped with state-of-the-art Lidar technology to survey the landscape, it was possible to generate images of the ground which filter out surface vegetation and reveal hidden details on the surface. In this case, the technology allowed researchers to make great advances in our knowledge of Angkorian civilisation.
3. Transforming disabled people's lives
Advances have been made in 'assistive technology', which enables disabled people to do things that would have previously not been possible. Recent examples include 'EyeGaze technology', which allows people to control the movement of a mouse on a computer screen using just their eyes. Other versions allow users to control the mouse with their head, knee, foot or mouth. Verbal communication technology such as 'Liberator' also allows disabled people to communicate verbally using just eye movements to send commands to a computer.
4. Helping female refugees
Recognising that half of refugees are women, a groups of coders, designers, NGOs and academics have been working to develop technology that can help to educate and provide information to female refugees. The development of apps is a key activity, with individual projects linked to NGOs to ensure delivery. Hababy, an app that provides prenatal and postnatal information for refugee women, is one example.
5. Driving on solar-powered roadways
An idea initially mooted a while ago, the notion of 'solar roadways' is starting to become a reality. It was announced this month that the Missouri Department of Transportation in the USA plans to become the first US public highway department to test the technology. By collecting the substantial solar energy that hits surfaces such as roads, the idea would give roads a dual purpose: both a part of modern transport infrastructure and a 'smart' power grid.