Warnings over online scams is the topic at a major cyber-security conference in Dublin today.
Websites are being used by Eastern European and North African gangs to lure men into exchanging intimate footage.
Such blackmail incidents have occurred in Mid-Ulster.
The conference will outline the challenges in a fast-evolving world of online threats.
Concern voiced as next phase of Omagh Bombing Inquiry hearings delayed
Four fatal house fires in three days in Northern Ireland ‘deeply concerning’
‘Much more to do’ to protect children in NI from sexual exploitation – report
Woman in critical condition after she's struck by car in Belfast
Man dies following road accident in County Fermanagh