The WannaCry computer virus infected thousands of computers worldwide this past weekend (May 12th 2017). A 'Trojan Horse' virus, it maliciously gains access to computer systems, locking down and making inaccessible to you and others your private information and data, then requesting a financial payment for the release of same. This type of computer software attack is known as Ransomware.
More recently, as many as 60 percent of the systems infected by the NotPetya ransomware - a variant of past viruses derived from code known as Eternal Blue developed by the US National Security Agency (NSA) - were located within Ukraine, before spreading to computers in Romania, the Netherlands, Norway, France, Spain, and Britain. The virus can leap from computer to computer once unleashed within an organisation but — unlike WannaCry — it could not randomly trawl the internet for its next victims.
It is believed by industry experts that these types of computer virus attacks are going to become more frequent. Alison's free online courses teach you how to avoid these viruses, but more importantly explains the concepts behind these attacks.