The cyberattack on several French blood banks comes after supermarkets across Europe reported their fridges​ and freezers​ were remotely taken over by hackers.

French blood banks were hit by cybersecurity attacks on Monday, with hackers cranking up temperatures in refrigerators storing blood.

Grocery store chains across Europe are scrambling to re-stock shelves after a cyberattack left massive amounts of food spoiled. CBS news international reporter Inaya Folarin Iman has more.

Ukrainian and Russian emergency alert apps were hacked just hours apart, sending civilians false warnings of chemical and nuclear attacks.

It was not clear if the attacks on Russia and Ukraine late Sunday were related.

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.