Sandra Collins was abducted from Killala Pier on December 4, 2000.
Seema Banu and her two children Asfira Riza, 11, and Faizan Syed, 6, were found dead in their Ballinteer home on October 28.
The two journalists, who work for the Northern Ireland edition of the Sunday World newspaper, were contacted by the PSNI, who advised them to be vigilant at home and when traveling.
Trevor Deely was last spotted being followed by a man in a dark hoodie on Haddington Road in Dublin in December 2000.
Discord permanently deleted a server containing 500 users after some 11,000 nude images were shared without the consent of the people in the photos.
More than 60,000 people have signed an online petition to make revenge porn illegal.
A man was arrested in Belfast on November 18, 2020 in relation to the 1974 bombing that is thought to have had IRA links.
Politicians are urging action after thousands of images of Irish women were shared online without consent.
The horrific murder-suicide that saw Tadg O'Sullivan and his two sons Mark and Diarmuid die shocked Ireland in October.
Dan and Barbara Donovan used an Irish shillelagh which dates back to the 1800s to beat off three intruders at their home in Illinois.
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