Malvertising is a cocktail blend of Malware and Advertising. The blend of this cocktail describe the spread of malware through online advertisements.
Malvertising first sighting was recorded back in 2007/2008 through a vulnerabilty in Adobe Flash. It has now taken off and becoming a popular for mass infections.
Website owners and web publisher can possibly incorporate a corrupted or malicious advertising into their page without knowing. Computers can be infected even without users clicking on the normal-appearing advertisement. Malvertising often involves the exploitation of trustworthy companies by injecting a virus, trojan or spyware in the code behind the ads.
Take a closer look whenever you access to a URL. You will see that the website will usually have embedded codes that automatically redirect to other websites in the background to retrieve fonts, website templates, social media analytics, website analysis. You will be redirect to many other web link other than the original website you entered.
I suggest ad blocking services to the network as this seems to be a risk that no one is managing. Allowing advertisements to be shown on company’s computer system consumes a lot of unnecessary bandwidth and is not productive for the business. However if you are looking at buying something, these advertisements reduces your turnaround time to get what you want.
Block out advertisements in your corporate network, if it is not contributing to the office productivity, unless these advertisements help with your shopping and purchase decision.