Computer viruses and worms

An exterior view shows the main entrance of St Bartholomew's Hospital, in London, one of the hospitals whose computer systems were affected by a cyberattack, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 13, 2017 - 3:14 pm
LONDON (AP) — The Latest on the global cyberattack (all times local): 8:10 p.m. The global cyberattack has hit Brazil's social security system, forcing it to disconnect computers and cancel public access to the agency. Brazil's state-owned oil company Petrobras and Brazil's Foreign Ministry also...
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An exterior view shows the main entrance of St Bartholomew's Hospital, in London, one of the hospitals whose computer systems were affected by a cyberattack, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 13, 2017 - 3:01 pm
LONDON (AP) — The Latest on the global cyberattack (all times local): 7:50 p.m. An expert on malware says the world's worst ransomware outbreak shows that hospitals are particularly vulnerable to this kind of cyberattack. This cyberextortion scheme exploits known problems in older versions of...
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An exterior view shows the main entrance of St Bartholomew's Hospital, in London, one of the hospitals whose computer systems were affected by a cyberattack, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 13, 2017 - 12:22 pm
LONDON (AP) — The Latest on the global cyberattack (all times local): 5:15 p.m. Britain's home secretary says about one in five National Health Service trusts have been hit by the international ransomware cyberattack, and that all but six are now back to normal. Speaking Saturday after an emergency...
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An exterior view shows the main entrance of St Bartholomew's Hospital, in London, one of the hospitals whose computer systems were affected by a cyberattack, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 13, 2017 - 12:01 pm
LONDON (AP) — The Latest on the global cyberattack (all times local): 5 p.m. A cybersecurity expert says the biggest cyberextortion attack in history is going to be dwarfed by the next big ransomware attack. Ori Eisen of the firm Trusona says the attack Friday that held hospitals, factories and...
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May 13, 2017 - 5:55 am
LONDON (AP) — The Latest on the global cyberattack (all times local): 10:50 a.m. The head of Turkey's Information and Communication Technologies Authority or BTK says the nation was among those affected by the ransomware attack. Omer Fatih Sayan said the country's cyber security center is...
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Patrick Ward, 47, a sales director at Purbeck Ice Cream, from Dorset in England, poses for photographs after giving media interviews after his heart operation scheduled today was cancelled because of a cyberattack, outside St Bartholomew's Hospital in London, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 12, 2017 - 8:13 pm
NEW YORK (AP) — Dozens of countries were hit with a huge cyberextortion attack Friday that locked up computers and held users' files for ransom at a multitude of hospitals, companies and government agencies. It was believed to the biggest attack of its kind ever recorded. The malicious software...
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Patrick Ward, 47, a sales director at Purbeck Ice Cream, from Dorset in England, poses for photographs after giving media interviews after his heart operation scheduled today was cancelled because of a cyberattack, outside St Bartholomew's Hospital in London, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 12, 2017 - 6:37 pm
NEW YORK (AP) — Dozens of countries were hit with a huge cyberextortion attack Friday that locked up computers and held users' files for ransom at a multitude of hospitals, companies and government agencies. It was believed to the biggest attack of its kind ever recorded. The malicious software...
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Patrick Ward, 47, a sales director at Purbeck Ice Cream, from Dorset in England, poses for photographs after giving media interviews after his heart operation scheduled today was cancelled because of a cyberattack, outside St Bartholomew's Hospital in London, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 12, 2017 - 5:56 pm
NEW YORK (AP) — Dozens of countries were hit with a huge cyberextortion attack Friday that locked up computers and held users' files for ransom at a multitude of hospitals, companies and government agencies. The attack appeared to exploit a vulnerability that was purportedly identified by the U.S...
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An exterior view shows the main entrance of St Bartholomew's Hospital, in London, one of the hospitals whose computer systems were affected by a cyberattack, Friday, May 12, 2017. A large cyberattack crippled computer systems at hospitals across England on Friday, with appointments canceled, phone lines down and patients turned away. (AP Photo/Matt Dunham)
May 12, 2017 - 4:41 pm
LONDON (AP) — The Latest on reported cyberattack on Britain's hospitals (all times local): 9:30 p.m. France's government cybersecurity agency is urging French Internet users to take measures to protect themselves from a new ransomware detected in several other countries. An official with the ANSSI...
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April 10, 2017 - 3:56 pm
MADRID (AP) — The Justice Department says it is working to dismantle a global computer network that sent hundreds of millions of spam emails worldwide each year. The Monday announcement comes after a Russian man alleged to be at the head of the so-called Kelihos botnet scheme was detained in Spain...
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