Apparent cyberattacks spark false threat alerts, Ukraine and Russia say

Nuclear danger, radiation threat and street combat: Ukrainians received a wave of messages Sunday night that raised alarm with a series of grave — and baseless — warnings.

Both Ukraine and Russia say their air raid alert apps were cyber-attacked - Joe Tidy explains what we know so far.

KYIV, Ukraine (AP) — Authorities in Ukraine and Russia said their emergency alert mobile apps had been targeted by cyberattacks, with users in Ukraine receiving false warnings of an imminent nuclear threat. It was not clear if the attacks late Sunday were related.

Hackers breached emergency alert apps in Ukraine and Russia overnight, issuing fake warnings of nuclear attacks and high radiation levels.