Cliona specialises in cybercrime analysis and investigation. From 2005 to 2013, she worked as a senior officer for the UK National High Tech Crime Unit (NHTCU) and the Serious Organised Crime Agency (SOCA). During this time, she represented the UK on many occasions on G8 and Interpol working groups as well as working on investigations into organised crime in conjunction with major European and US law enforcement agencies.
After returning to Ireland, Cliona joined the Centre for Cybersecurity and Cybercrime investigation in UCD, building forensic tools for law enforcement, as well as developing and delivering training in cybercrime investigation and related areas for An Garda Siochana and law enforcement agencies across Europe. Since 2014, she has delivered online safety sessions in Irish primary schools. She is passionate about protecting children online and believes that education is crucial. This was a strong motivating factor for the establishment of CyberSafeIreland CLG in 2015.