An IT journalist between 1995 and 2010, Simon worked on the UK's biggest computer magazine titles. At Dennis Publishing these included titles such as Computer Shopper, PC Pro, Computer Active, Web User, Mac User and IT Pro.
Simon's areas of expertise is anti-malware testing and he was, until the end of 2015, Technical Director of Dennis Technology Labs, an independent security testing business that was part of the Dennis Publishing media company. He then founded SE Labs, which specialises in advanced security testing. He also provides technical advice to a number of specialist security companies.
A founder member of the Anti Malware Testing Standards Organization (AMTSO), Simon was chairman of its Board of Directors between 2012 and 2015. He was reappointed as chairman in January 2017.