A switch back to security issues with today’s post. Specifically, a look at Ransomware, what it is and how to protect against it.
What is Ransomware?
Ransomware is a type of malware (or virus) that can be installed on a computer without knowledge or the intention of the user. Typically, it takes the form of a Trojan, entering a system through, a downloaded file or a vulnerability in an online service. Its aim is to restricts access to the infected computer system in some way, sometimes completely. Then it will demand that the user pays a fee (a Ransom) to the perpetrators to have the restriction removed.
Have Ransomware attacks not ended?
Things did seem to quiet down, however there has been a measured increase in detection of new threats. Kaspersky Lab Detected a 14% Increase in New Ransomware Modifications in the first quarter of 2016.
Are only PCs at risk?
Originally, this was the case. However, it did not take long for attacks to migrate from traditional targets to mobile devices. These infections work in much the same way, locking out a user until a fee is paid.
What can I do to protect myself?
Vigilance is the key. Avoid sites where pirated content is provided. Pirated downloads may have been modified to harbour hidden viruses and malicious content. Avoid sites that stream pay for view content for free. Again for the same reasons as above. And also in this vain, think before clicking on a link.
Next, ensure you keep your anti-virus software up to date. At one time there was little defence against Ransomware, but now most credible anti-virus systems deal well with legacy attacks. I say legacy attacks as new malware is always been developed and there is always the risk of attacks before fixes become available.
Finally, take regular off line back-ups. Ransomware plays on a weakness that we are all afraid of losing all our precious content. Knowing that many of us would rather pay than suffer that fate. Having a good back-up policy removes this risk. If you become infected you can simply ‘flatten’ a machine and restore from back-up.
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Will Hogarth
CTO @ VGS Media
Will Hogarth is a long time geek, writer, and long distance
triathlete, with extensive experience in most areas of the IT World. Will is a
former games developer, DBA and project manager, but unlike most geeks he has a
passion for the outdoors and a life of adventure.
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