Twitter to verify those behind hot-button US issue ads

Twitter on Thursday started requiring those behind hot-button issue ads in the US to be vetted as part of the effort by the social network to thwart stealth campaigns aimed at influencing politics.

Qatar's Al-Jazeera says battling cyber attack

Qatar-based broadcaster Al-Jazeera said Thursday that it was under a widescale cyber attack which had targeted "all systems", according to a statement released on social media by the broadcaster.

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