Cash machines in a supermarket in Kiev weren't working on Wednesday after a cyberattack paralyzed computers in Ukraine and elsewhere. Victims included government offices, energy companies, banks and gas stations.
In this photo dated Aug. 23, 2010, Iranian technicians work at the Bushehr nuclear power plant, where Iran had confirmed several personal laptops infected by Stuxnet malware.
Ebrahim Norouzi/AP/International Iran Photo Agency
After the WannaCry cyberattack hit computer systems worldwide, Microsoft says governments should report software vulnerabilities instead of collecting them. Here, a ransom window announces the encryption of data on a transit display in eastern Germany on Friday.