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News that a potential security threat in the web-based version of WhatsApp left up to 200 million of its users with their data exposed to hackers and malware acts as a reminder to us all to be vigilant in our online interactions. While the bug affected the popular instant messaging app’s web-based version rather than the mobile app itself, and was remedied by WhatsApp after being detected by an Israeli IT firm, it’s nonetheless a worry for those of us who rely on WhatsApp for both business and pleasure. Here’s the lowdown.
The web-based version of the WhatsApp app was only launched a few months back, initially for WhatsApp accounts on Android and Windows Phone devices and later for those on iPhones, but has already grown in popularity. The recent security vulnerability related to vCards, electronic business cards shared by WhatsApp users, and effectively amounted to a kind of phishing.
An error in the WhatsApp web client meant that less-than-innocuous vCard business cards created by hackers were not properly filtered out by the app. As a result, these phishing-style cards made it through to users who, if they clicked them, were at risk of the cards converting themselves to more harmful executable scripts once downloaded – and potentially accessing and playing foul with users’ personal data. There are even reports of a ransomware approach being taken by hackers in this case, with attempts being made to extort cash from WhatsApp users in exchange for restored access to their infected devices and hijacked data.
WhatsApp put a fix in place, by releasing an updated version of the app, prior to making public news of the security vulnerability. It’s worth making sure you have the latest version of WhatsApp installed on your phone, if you haven’t checked recently – WhatsApp’s phone and web versions are linked to one another, so ensuring you are up-to-date on your phone is the way to ensure you’re safe when using the web client too. The patch is also available directly through the web client, though this won’t update your phone’s version of the app at the same time.
The whole affair also serves as a timely reminder that it pays to be vigilant when it comes to using WhatsApp and other instant messaging platforms – including email. Avoid opening links or downloading files that you’re not expecting to receive, and proceed with caution even if you were anticipating them. It’s better to double check with the sender that they’re consciously passing a file to you, and that they’re fully aware of its contents, than to wait until your device has been infected and damage has potentially been inflicted on your vital data.
Want to learn how to keep your devices safe from phishing attempts and other potential security vulnerabilities? Give us a call and let us equip you with tamperproof solutions.
Published on 7th October 2015 by Jeanne DeWitt.