Graham Cluley has hosted 137 episodes.
Graham is an award-winning security blogger, researcher and public speaker. He has been a well-known figure in the computer security industry since the early 1990s when he worked as a programmer, writing the first ever version of Dr Solomon's Anti-Virus Toolkit for Windows.
Graham Cluley has given talks about computer security for some of the world's largest companies, worked with law enforcement agencies on investigations into hacking groups, and regularly appears on TV and radio explaining computer security threats.
Graham Cluley was inducted into the InfoSecurity Europe Hall of Fame in 2011.
Carole Theriault has hosted 136 episodes.
Carole founded the Sophos Naked Security site, and now heads up Tick Tock Social, a digital media and communications firm dedicated to technology firms and organisations.